Raphaël G. Git Repositories - airbundle/blob - Command/WeatherCommand.php

   1 <?php
   2
   3 namespace Rapsys\AirBundle\Command;
   4
   5 use Doctrine\Bundle\DoctrineBundle\Command\DoctrineCommand;
   6 use Symfony\Component\Console\Input\InputInterface;
   7 use Symfony\Component\Console\Output\OutputInterface;
   8 use Symfony\Component\Filesystem\Exception\IOExceptionInterface;
   9 use Symfony\Component\Filesystem\Filesystem;
  10 use Rapsys\AirBundle\Entity\Session;
  11
  12 class WeatherCommand extends DoctrineCommand {
  13         //Set failure constant
  14         const FAILURE = 1;
  15
  16         ///Set success constant
  17         const SUCCESS = 0;
  18
  19         ///Set Tidy config
  20         private $config = [
  21                 //Mostly useless in fact
  22                 'indent' => true,
  23                 //Required to simplify simplexml transition
  24                 'output-xml' => true,
  25                 //Required to avoid xml errors
  26                 'quote-nbsp' => false,
  27                 //Required to fix code
  28                 'clean' => true
  29         ];
  30
  31         ///Set accuweather uris
  32         private $accuweather = [
  33                 //Hourly uri
  34                 'hourly' => [
  35                         75001 => 'https://www.accuweather.com/en/fr/paris-01-louvre/75001/hourly-weather-forecast/179142_pc?day=',
  36                         75004 => 'https://www.accuweather.com/en/fr/paris-04-hotel-de-ville/75004/hourly-weather-forecast/179145_pc?day=',
  37                         75005 => 'https://www.accuweather.com/en/fr/paris-05-pantheon/75005/hourly-weather-forecast/179146_pc?day=',
  38                         75007 => 'https://www.accuweather.com/en/fr/paris-07-palais-bourbon/75007/hourly-weather-forecast/179148_pc?day=',
  39                         75009 => 'https://www.accuweather.com/en/fr/paris-09-opera/75009/hourly-weather-forecast/179150_pc?day=',
  40                         75013 => 'https://www.accuweather.com/en/fr/paris-13-gobelins/75013/hourly-weather-forecast/179154_pc?day=',
  41                         75015 => 'https://www.accuweather.com/en/fr/paris-15-vaugirard/75015/hourly-weather-forecast/179156_pc?day=',
  42                         75019 => 'https://www.accuweather.com/en/fr/paris-19-buttes-chaumont/75019/hourly-weather-forecast/179160_pc?day=',
  43                         75116 => 'https://www.accuweather.com/en/fr/paris-16-passy/75116/hourly-weather-forecast/179246_pc?day='
  44                 ],
  45                 //Daily uri
  46                 'daily' => [
  47                         75001 => 'https://www.accuweather.com/en/fr/paris-01-louvre/75001/daily-weather-forecast/179142_pc',
  48                         75004 => 'https://www.accuweather.com/en/fr/paris-04-hotel-de-ville/75004/daily-weather-forecast/179145_pc',
  49                         75005 => 'https://www.accuweather.com/en/fr/paris-05-pantheon/75005/daily-weather-forecast/179146_pc',
  50                         75007 => 'https://www.accuweather.com/en/fr/paris-07-palais-bourbon/75007/daily-weather-forecast/179148_pc',
  51                         75009 => 'https://www.accuweather.com/en/fr/paris-09-opera/75009/daily-weather-forecast/179150_pc',
  52                         75013 => 'https://www.accuweather.com/en/fr/paris-13-gobelins/75013/daily-weather-forecast/179154_pc',
  53                         75015 => 'https://www.accuweather.com/en/fr/paris-15-vaugirard/75015/daily-weather-forecast/179156_pc',
  54                         75019 => 'https://www.accuweather.com/en/fr/paris-19-buttes-chaumont/75019/daily-weather-forecast/179160_pc',
  55                         75116 => 'https://www.accuweather.com/en/fr/paris-16-passy/75116/daily-weather-forecast/179246_pc'
  56                 ]
  57         ];
  58
  59         ///Set curl handler
  60         private $ch = null;
  61
  62         ///Configure attribute command
  63         protected function configure() {
  64                 //Configure the class
  65                 $this
  66                         //Set name
  67                         ->setName('rapsysair:weather')
  68                         //Set description shown with bin/console list
  69                         ->setDescription('Updates session rain and temperature fields')
  70                         //Set description shown with bin/console --help airlibre:attribute
  71                         ->setHelp('This command updates session rain and temperature fields in next three days')
  72                         //Add daily and hourly aliases
  73                         ->setAliases(['rapsysair:weather:daily', 'rapsysair:weather:hourly']);
  74         }
  75
  76         ///Process the attribution
  77         protected function execute(InputInterface $input, OutputInterface $output) {
  78                 //Fetch doctrine
  79                 $doctrine = $this->getDoctrine();
  80
  81                 //Get manager
  82                 $manager = $doctrine->getManager();
  83
  84                 //Tidy object
  85                 $tidy = new \tidy();
  86
  87                 //Init zipcodes array
  88                 $zipcodes = [];
  89
  90                 //Init types
  91                 $types = [];
  92
  93                 //Process hourly accuweather
  94                 if (($command = $input->getFirstArgument()) == 'rapsysair:weather:hourly' || $command == 'rapsysair:weather') {
  95                         //Fetch hourly sessions to attribute
  96                         $types['hourly'] = $doctrine->getRepository(Session::class)->findAllPendingHourlyWeather();
  97
  98                         //Iterate on each session
  99                         foreach($types['hourly'] as $sessionId => $session) {
 100                                 //Get zipcode
 101                                 $zipcode = $session->getLocation()->getZipcode();
 102
 103                                 //Get start
 104                                 $start = $session->getStart();
 105
 106                                 //Set start day
 107                                 $day = $start->diff((new \DateTime('now'))->setTime(0, 0, 0))->d + 1;
 108
 109                                 //Check if zipcode is set
 110                                 if (!isset($zipcodes[$zipcode])) {
 111                                         $zipcodes[$zipcode] = [];
 112                                 }
 113
 114                                 //Check if zipcode date is set
 115                                 if (!isset($zipcodes[$zipcode][$day])) {
 116                                         $zipcodes[$zipcode][$day] = [ $sessionId => $sessionId ];
 117                                 } else {
 118                                         $zipcodes[$zipcode][$day][$sessionId] = $sessionId;
 119                                 }
 120
 121                                 //Get stop
 122                                 $stop = $session->getStop();
 123
 124                                 //Set stop day
 125                                 $day = $stop->diff((new \DateTime('now'))->setTime(0, 0, 0))->d + 1;
 126
 127                                 //Check if zipcode date is set
 128                                 if (!isset($zipcodes[$zipcode][$day])) {
 129                                         $zipcodes[$zipcode][$day] = [ $sessionId => $sessionId ];
 130                                 } else {
 131                                         $zipcodes[$zipcode][$day][$sessionId] = $sessionId;
 132                                 }
 133                         }
 134                 }
 135
 136                 //Process daily accuweather
 137                 if ($command == 'rapsysair:weather:daily' || $command == 'rapsysair:weather') {
 138                         //Fetch daily sessions to attribute
 139                         $types['daily'] = $doctrine->getRepository(Session::class)->findAllPendingDailyWeather();
 140
 141                         //Iterate on each session
 142                         foreach($types['daily'] as $sessionId => $session) {
 143                                 //Get zipcode
 144                                 $zipcode = $session->getLocation()->getZipcode();
 145
 146                                 //Get start
 147                                 $start = $session->getStart();
 148
 149                                 //Set start day
 150                                 $day = 'daily';
 151
 152                                 //Check if zipcode is set
 153                                 if (!isset($zipcodes[$zipcode])) {
 154                                         $zipcodes[$zipcode] = [];
 155                                 }
 156
 157                                 //Check if zipcode date is set
 158                                 if (!isset($zipcodes[$zipcode][$day])) {
 159                                         $zipcodes[$zipcode][$day] = [ $sessionId => $sessionId ];
 160                                 } else {
 161                                         $zipcodes[$zipcode][$day][$sessionId] = $sessionId;
 162                                 }
 163                         }
 164                 }
 165
 166                 //Get filesystem
 167                 $filesystem = new Filesystem();
 168
 169                 //Set tmpdir
 170                 //XXX: worst case scenario we have 3 files per zipcode
 171                 if (!is_dir($tmpdir = sys_get_temp_dir().'/accuweather')) {
 172                         try {
 173                                 //Create dir
 174                             $filesystem->mkdir($tmpdir, 0775);
 175                         } catch (IOExceptionInterface $exception) {
 176                                 //Display error
 177                                 echo 'Create dir '.$exception->getPath().' failed'."\n";
 178
 179                                 //Exit with failure
 180                                 exit(self::FAILURE);
 181                         }
 182                 }
 183
 184                 //Init curl
 185                 $this->curl_init();
 186
 187                 //Init data array
 188                 $data = [];
 189
 190                 //Iterate on zipcodes
 191                 foreach($zipcodes as $zipcode => $days) {
 192                         //Iterate on days
 193                         foreach($days as $day => $null) {
 194                                 //Try to load content from cache
 195                                 if (!is_file($file = $tmpdir.'/'.$zipcode.'.'.$day.'.html') || stat($file)['ctime'] <= (time() - ($day == 'daily' ? 4 : 2)*3600) || ($content = file_get_contents($file)) === false) {
 196                                         //Prevent timing detection
 197                                         //XXX: from 0.1 to 5 seconds
 198                                         usleep(rand(1,50) * 100000);
 199
 200                                         //Get content
 201                                         //TODO: for daily we may load data for requested quarter of the day
 202                                         $content = $this->curl_get($day == 'daily' ? $this->accuweather['daily'][$zipcode] : $this->accuweather['hourly'][$zipcode].$day);
 203
 204                                         //Store it
 205                                         if (file_put_contents($tmpdir.'/'.$zipcode.'.'.$day.'.html', $content) === false) {
 206                                                 //Display error
 207                                                 echo 'Write to '.$tmpdir.'/'.$zipcode.'.'.$day.'.html failed'."\n";
 208
 209                                                 //Exit with failure
 210                                                 exit(self::FAILURE);
 211                                         }
 212                                 }
 213
 214                                 //Parse string
 215                                 $tidy->parseString($content, $this->config, 'utf8');
 216
 217                                 //Fix error buffer
 218                                 //XXX: don't care about theses errors, tidy is here to fix...
 219                                 #if (!empty($tidy->errorBuffer)) {
 220                                 #       var_dump($tidy->errorBuffer);
 221                                 #       die('Tidy errors');
 222                                 #}
 223
 224                                 //Load simplexml
 225                                 //XXX: trash all xmlns= broken tags
 226                                 $sx = new \SimpleXMLElement(str_replace(['xmlns=', 'xlink:href='], ['xns=', 'href='], $tidy));
 227
 228                                 //Process daily
 229                                 if ($day == 'daily') {
 230                                         //Iterate on each link containing data
 231                                         foreach($sx->xpath('//a[@class="daily-forecast-card"]') as $node) {
 232                                                 //Get date
 233                                                 $dsm = trim($node->div[0]->h2[0]->span[1]);
 234
 235                                                 //Get temperature
 236                                                 $temperature = str_replace('°', '', $node->div[0]->div[0]->span[0]);
 237
 238                                                 //Get rainrisk
 239                                                 $rainrisk = str_replace('%', '', trim($node->div[2]))/100;
 240
 241                                                 //Store data
 242                                                 $data[$zipcode][$dsm]['daily'] = [
 243                                                         'temperature' => $temperature,
 244                                                         'rainrisk' => $rainrisk
 245                                                 ];
 246                                         }
 247                                 //Process hourly
 248                                 } else {
 249                                         //Iterate on each div containing data
 250                                         #(string)$sx->xpath('//div[@class="hourly-card-nfl"]')[0]->attributes()->value
 251                                         #/html/body/div[1]/div[5]/div[1]/div[1]/div[1]/div[1]/div[1]/div/h2/span[1]
 252                                         foreach($sx->xpath('//div[@data-shared="false"]') as $node) {
 253                                                 //Get hour
 254                                                 $hour = trim($node->div[0]->div[0]->h2[0]->span[0]);
 255
 256                                                 //Get dsm
 257                                                 $dsm = trim($node->div[0]->div[0]->h2[0]->span[1]);
 258
 259                                                 //Get temperature
 260                                                 $temperature = str_replace('°', '', $node->div[0]->div[0]->div[0]);
 261
 262                                                 //Get realfeel
 263                                                 $realfeel = str_replace(['RealFeel® ', '°'], '', trim($node->div[0]->div[0]->span[0]));
 264
 265                                                 //Get rainrisk
 266                                                 $rainrisk = str_replace('%', '', trim($node->div[0]->div[0]->div[1]))/100;
 267
 268                                                 //Set rainfall to 0 (mm)
 269                                                 $rainfall = 0;
 270
 271                                                 //Iterate on each entry
 272                                                 foreach($node->div[1]->div[0]->div[0]->div[1]->p as $p) {
 273                                                         //Lookup for rain entry if present
 274                                                         if (trim($p) == 'Rain') {
 275                                                                 //Get rainfall
 276                                                                 $rainfall = floatval(str_replace(' mm', '', $p->span[0]));
 277                                                         }
 278                                                 }
 279
 280                                                 //Store data
 281                                                 $data[$zipcode][$dsm][$hour] = [
 282                                                         'temperature' => $temperature,
 283                                                         'realfeel' => $realfeel,
 284                                                         'rainrisk' => $rainrisk,
 285                                                         'rainfall' => $rainfall
 286                                                 ];
 287                                         }
 288                                 }
 289
 290                                 //Cleanup
 291                                 unset($sx);
 292                         }
 293                 }
 294
 295                 //Iterate on types
 296                 foreach($types as $type => $sessions) {
 297                         //Iterate on each type
 298                         foreach($sessions as $sessionId => $session) {
 299                                 //Get zipcode
 300                                 $zipcode = $session->getLocation()->getZipcode();
 301
 302                                 //Get start
 303                                 $start = $session->getStart();
 304
 305                                 //Daily type
 306                                 if ($type == 'daily') {
 307                                         //Set period
 308                                         $period = [ $start ];
 309                                 //Hourly type
 310                                 } else {
 311                                         //Get stop
 312                                         $stop = $session->getStop();
 313
 314                                         //Compute period
 315                                         $period = new \DatePeriod(
 316                                                 //Start from begin
 317                                                 $start,
 318                                                 //Iterate on each hour
 319                                                 new \DateInterval('PT1H'),
 320                                                 //End with begin + length
 321                                                 $stop
 322                                         );
 323                                 }
 324
 325                                 //Set meteo
 326                                 $meteo = [
 327                                         'rainfall' => null,
 328                                         'rainrisk' => null,
 329                                         'realfeel' => [],
 330                                         'realfeelmin' => null,
 331                                         'realfeelmax' => null,
 332                                         'temperature' => [],
 333                                         'temperaturemin' => null,
 334                                         'temperaturemax' => null
 335                                 ];
 336
 337                                 //Iterate on the period
 338                                 foreach($period as $time) {
 339                                         //Set dsm
 340                                         $dsm = $time->format('d/m');
 341
 342                                         //Set hour
 343                                         $hour = $type=='daily'?$type:$time->format('H');
 344
 345                                         //Check data availability
 346                                         //XXX: should never happen
 347                                         #if (!isset($data[$zipcode][$dsm][$hour])) {
 348                                         #       //Skip unavailable data
 349                                         #       continue;
 350                                         #}
 351
 352                                         //Set info alias
 353                                         $info = $data[$zipcode][$dsm][$hour];
 354
 355                                         //Check if rainrisk is higher
 356                                         if ($meteo['rainrisk'] === null || $info['rainrisk'] > $meteo['rainrisk']) {
 357                                                 //Set highest rain risk
 358                                                 $meteo['rainrisk'] = floatval($info['rainrisk']);
 359                                         }
 360
 361                                         //Check if rainfall is set
 362                                         if (isset($info['rainfall'])) {
 363                                                 //Set rainfall sum
 364                                                 $meteo['rainfall'] += floatval($info['rainfall']);
 365                                         }
 366
 367                                         //Add temperature
 368                                         $meteo['temperature'][$hour] = $info['temperature'];
 369
 370                                         //Hourly type
 371                                         if ($type != 'daily') {
 372                                                 //Check min temperature
 373                                                 if ($meteo['temperaturemin'] === null || $info['temperature'] < $meteo['temperaturemin']) {
 374                                                         $meteo['temperaturemin'] = floatval($info['temperature']);
 375                                                 }
 376
 377                                                 //Check max temperature
 378                                                 if ($meteo['temperaturemax'] === null || $info['temperature'] > $meteo['temperaturemax']) {
 379                                                         $meteo['temperaturemax'] = floatval($info['temperature']);
 380                                                 }
 381                                         }
 382
 383                                         //Check if realfeel is set
 384                                         if (isset($info['realfeel'])) {
 385                                                 //Add realfeel
 386                                                 $meteo['realfeel'][$hour] = $info['realfeel'];
 387
 388                                                 //Check min realfeel
 389                                                 if ($meteo['realfeelmin'] === null || $info['realfeel'] < $meteo['realfeelmin']) {
 390                                                         $meteo['realfeelmin'] = floatval($info['realfeel']);
 391                                                 }
 392
 393                                                 //Check max realfeel
 394                                                 if ($meteo['realfeelmax'] === null || $info['realfeel'] > $meteo['realfeelmax']) {
 395                                                         $meteo['realfeelmax'] = floatval($info['realfeel']);
 396                                                 }
 397                                         }
 398                                 }
 399
 400                                 //Check if rainfall is set and differ
 401                                 if ($session->getRainfall() !== $meteo['rainfall']) {
 402                                         //Set rainfall
 403                                         $session->setRainfall($meteo['rainfall']);
 404                                 }
 405
 406                                 //Check if rainrisk differ
 407                                 if ($session->getRainrisk() !== $meteo['rainrisk']) {
 408                                         //Set rainrisk
 409                                         $session->setRainrisk($meteo['rainrisk']);
 410                                 }
 411
 412                                 //Check realfeel array
 413                                 if ($meteo['realfeel'] !== []) {
 414                                         //Compute realfeel
 415                                         $realfeel = floatval(round(array_sum($meteo['realfeel'])/count($meteo['realfeel']),1));
 416
 417                                         //Check if realfeel differ
 418                                         if ($session->getRealfeel() !== $realfeel) {
 419                                                 //Set average realfeel
 420                                                 #$meteo['realfeel'] = array_sum($meteo['realfeel'])/count($meteo['realfeel']);
 421                                                 $session->setRealfeel($realfeel);
 422                                         }
 423
 424                                         //Check if realfeelmin differ
 425                                         if ($session->getRealfeelmin() !== $meteo['realfeelmin']) {
 426                                                 //Set realfeelmin
 427                                                 $session->setRealfeelmin($meteo['realfeelmin']);
 428                                         }
 429
 430                                         //Check if realfeelmax differ
 431                                         if ($session->getRealfeelmax() !== $meteo['realfeelmax']) {
 432                                                 //Set realfeelmax
 433                                                 $session->setRealfeelmax($meteo['realfeelmax']);
 434                                         }
 435                                 }
 436
 437                                 //Check temperature array
 438                                 if ($meteo['temperature'] !== []) {
 439                                         //Compute temperature
 440                                         $temperature = floatval(round(array_sum($meteo['temperature'])/count($meteo['temperature']),1));
 441
 442                                         //Check if temperature differ
 443                                         if ($session->getTemperature() !== $temperature) {
 444                                                 //Set average temperature
 445                                                 #$meteo['temperature'] = array_sum($meteo['temperature'])/count($meteo['temperature']);
 446                                                 $session->setTemperature($temperature);
 447                                         }
 448
 449                                         //Check if temperaturemin differ
 450                                         if ($session->getTemperaturemin() !== $meteo['temperaturemin']) {
 451                                                 //Set temperaturemin
 452                                                 $session->setTemperaturemin($meteo['temperaturemin']);
 453                                         }
 454
 455                                         //Check if temperaturemax differ
 456                                         if ($session->getTemperaturemax() !== $meteo['temperaturemax']) {
 457                                                 //Set temperaturemax
 458                                                 $session->setTemperaturemax($meteo['temperaturemax']);
 459                                         }
 460                                 }
 461                         }
 462                 }
 463
 464                 //Flush to get the ids
 465                 $manager->flush();
 466
 467                 //Close curl handler
 468                 $this->curl_close();
 469
 470                 //Return success
 471                 return self::SUCCESS;
 472         }
 473
 474         /**
 475          * Init curl handler
 476          *
 477          * @return bool|void Return success or exit
 478          */
 479         function curl_init() {
 480                 //Init curl
 481                 if (($this->ch = curl_init()) === false) {
 482                         //Display error
 483                         echo 'Curl init failed: '.curl_error($this->ch)."\n";
 484                         //Exit with failure
 485                         exit(self::FAILURE);
 486                 }
 487
 488                 //Set curl options
 489                 if (
 490                         curl_setopt_array(
 491                                 $this->ch,
 492                                 [
 493                                         //Force http2
 494                                         CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_2_0,
 495                                         //Set http headers
 496                                         CURLOPT_HTTPHEADER => [
 497                                                 //XXX: it seems that you can disable akamai fucking protection with Pragma: akamai-x-cache-off
 498                                                 //XXX: see https://support.globaldots.com/hc/en-us/articles/115003996705-Akamai-Pragma-Headers-overview
 499                                                 #'Pragma: akamai-x-cache-off',
 500                                                 //XXX: working curl command
 501                                                 #curl --http2 --cookie file.jar --cookie-jar file.jar -v -i -k -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9' -H 'Accept-Language: en-GB,en;q=0.9' -H 'Cache-Control: no-cache' -H 'Connection: keep-alive' -H 'Host: www.accuweather.com' -H 'Pragma: no-cache' -H 'Upgrade-Insecure-Requests: 1' -H 'User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36' 'https://www.accuweather.com/'
 502                                                 //Set accept
 503                                                 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9',
 504                                                 //Set accept language
 505                                                 'Accept-Language: en-GB,en;q=0.9',
 506                                                 //Disable cache
 507                                                 'Cache-Control: no-cache',
 508                                                 //Keep connection alive
 509                                                 'Connection: keep-alive',
 510                                                 //Disable cache
 511                                                 'Pragma: no-cache',
 512                                                 //Force secure requests
 513                                                 'Upgrade-Insecure-Requests: 1',
 514                                                 //Set user agent
 515                                                 'User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36',
 516                                                 //Force akamai cookie
 517                                                 //XXX: seems to come from http request
 518                                                 'Cookie: AKA_A2=A',
 519                                         ],
 520                                         //Enable cookie
 521                                         CURLOPT_COOKIEFILE => '',
 522                                         //Disable location following
 523                                         CURLOPT_FOLLOWLOCATION => false,
 524                                         //Set url
 525                                         #CURLOPT_URL => $url = 'https://www.accuweather.com/',
 526                                         //Return headers too
 527                                         CURLOPT_HEADER => true,
 528                                         //Return content
 529                                         CURLOPT_RETURNTRANSFER => true,
 530
 531                                         //XXX: debug
 532                                         CURLINFO_HEADER_OUT => true
 533                                 ]
 534                         ) === false
 535                 ) {
 536                         //Display error
 537                         echo 'Curl setopt array failed: '.curl_error($this->ch)."\n";
 538                         //Exit with failure
 539                         exit(self::FAILURE);
 540                 }
 541
 542                 //Return success
 543                 return true;
 544         }
 545
 546         /**
 547          * Get url
 548          *
 549          * @return string|void Return url content or exit
 550          */
 551         function curl_get($url) {
 552                 //Set url to fetch
 553                 if (curl_setopt($this->ch, CURLOPT_URL, $url) === false) {
 554                         //Display error
 555                         echo 'Setopt for '.$url.' failed: '.curl_error($this->ch)."\n";
 556
 557                         //Close curl handler
 558                         curl_close($this->ch);
 559
 560                         //Exit with failure
 561                         exit(self::FAILURE);
 562                 }
 563
 564                 //Check return status
 565                 if (($response = curl_exec($this->ch)) === false) {
 566                         //Display error
 567                         echo 'Get for '.$url.' failed: '.curl_error($this->ch)."\n";
 568
 569                         //Display sent headers
 570                         var_dump(curl_getinfo($this->ch, CURLINFO_HEADER_OUT));
 571
 572                         //Display response
 573                         var_dump($response);
 574
 575                         //Close curl handler
 576                         curl_close($this->ch);
 577
 578                         //Exit with failure
 579                         exit(self::FAILURE);
 580                 }
 581
 582                 //Get header size
 583                 if (empty($hs = curl_getinfo($this->ch, CURLINFO_HEADER_SIZE))) {
 584                         //Display error
 585                         echo 'Getinfo for '.$url.' failed: '.curl_error($this->ch)."\n";
 586
 587                         //Display sent headers
 588                         var_dump(curl_getinfo($this->ch, CURLINFO_HEADER_OUT));
 589
 590                         //Display response
 591                         var_dump($response);
 592
 593                         //Close curl handler
 594                         curl_close($this->ch);
 595
 596                         //Exit with failure
 597                         exit(self::FAILURE);
 598                 }
 599
 600                 //Get header
 601                 if (empty($header = substr($response, 0, $hs))) {
 602                         //Display error
 603                         echo 'Header for '.$url.' empty: '.curl_error($this->ch)."\n";
 604
 605                         //Display sent headers
 606                         var_dump(curl_getinfo($this->ch, CURLINFO_HEADER_OUT));
 607
 608                         //Display response
 609                         var_dump($response);
 610
 611                         //Close curl handler
 612                         curl_close($this->ch);
 613
 614                         //Exit with failure
 615                         exit(self::FAILURE);
 616                 }
 617
 618                 //Check request success
 619                 if (strlen($header) <= 10 || substr($header, 0, 10) !== 'HTTP/2 200') {
 620                         //Display error
 621                         echo 'Status for '.$url.' failed: '.curl_error($this->ch)."\n";
 622
 623                         //Display sent headers
 624                         var_dump(curl_getinfo($this->ch, CURLINFO_HEADER_OUT));
 625
 626                         //Display response
 627                         var_dump($header);
 628
 629                         //Close curl handler
 630                         curl_close($this->ch);
 631
 632                         //Exit with failure
 633                         exit(self::FAILURE);
 634                 }
 635
 636                 //Return content
 637                 return substr($response, $hs);
 638         }
 639
 640         /**
 641          * Close curl handler
 642          *
 643          * @return bool Return success or failure
 644          */
 645         function curl_close() {
 646                 return curl_close($this->ch);
 647         }
 648 }