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<?php namespace JMathai\PhpMultiCurl; |
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/*if(!class_exists('MultiCurlManager')) |
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include 'MultiCurlManager.php'; |
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if(!class_exists('MultiCurlSequence')) |
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include 'MultiCurlSequence.php'; |
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if(!class_exists('MultiCurlException')) |
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include 'MultiCurlException.php';*/ |
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/** |
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* MultiCurl multicurl http client |
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* |
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* @author Jaisen Mathai <[email protected]> |
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*/ |
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class MultiCurl |
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{ |
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const timeout = 3; |
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private static $inst = null; |
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/* @TODO make this private and add a method to set it to 0 */ |
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public static $singleton = 0; |
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private $mc; |
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private $running; |
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private $execStatus; |
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private $sleepIncrement = 1.1; |
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private $requests = array(); |
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private $responses = array(); |
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private $properties = array(); |
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private static $timers = array(); |
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public function __construct() |
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{ |
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if(self::$singleton === 0) |
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{ |
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throw new MultiCurlException('This class cannot be instantiated by the new keyword. You must instantiate it using: $obj = MultiCurl::getInstance();'); |
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} |
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$this->mc = curl_multi_init(); |
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$this->properties = array( |
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'code' => CURLINFO_HTTP_CODE, |
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'time' => CURLINFO_TOTAL_TIME, |
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'length'=> CURLINFO_CONTENT_LENGTH_DOWNLOAD, |
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'type' => CURLINFO_CONTENT_TYPE, |
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'url' => CURLINFO_EFFECTIVE_URL |
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); |
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} |
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public function reset(){ |
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$this->requests = array(); |
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$this->responses = array(); |
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self::$timers = array(); |
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} |
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public function addUrl($url, $options = array()) |
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{ |
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$ch = curl_init($url); |
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); |
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foreach($options as $option=>$value) |
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{ |
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curl_setopt($ch, $option, $value); |
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} |
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return $this->addCurl($ch); |
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} |
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public function addCurl($ch) |
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{ |
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if(gettype($ch) !== 'resource') |
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{ |
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throw new MultiCurlInvalidParameterException('Parameter must be a valid curl handle'); |
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} |
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$key = $this->getKey($ch); |
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$this->requests[$key] = $ch; |
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curl_setopt($ch, CURLOPT_HEADERFUNCTION, array($this, 'headerCallback')); |
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$code = curl_multi_add_handle($this->mc, $ch); |
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$this->startTimer($key); |
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// (1) |
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if($code === CURLM_OK || $code === CURLM_CALL_MULTI_PERFORM) |
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{ |
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do |
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{ |
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$this->execStatus = curl_multi_exec($this->mc, $this->running); |
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} while ($this->execStatus === CURLM_CALL_MULTI_PERFORM); |
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return new MultiCurlManager($key); |
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} |
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else |
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{ |
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return $code; |
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} |
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} |
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public function getResult($key = null) |
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{ |
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if($key != null) |
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{ |
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if(isset($this->responses[$key]['code'])) |
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{ |
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return $this->responses[$key]; |
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} |
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$innerSleepInt = $outerSleepInt = 1; |
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while($this->running && ($this->execStatus == CURLM_OK || $this->execStatus == CURLM_CALL_MULTI_PERFORM)) |
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{ |
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usleep(intval($outerSleepInt)); |
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$outerSleepInt = intval(max(1, ($outerSleepInt*$this->sleepIncrement))); |
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$ms=curl_multi_select($this->mc, 0); |
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// bug in PHP 5.3.18+ where curl_multi_select can return -1 |
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// https://bugs.php.net/bug.php?id=63411 |
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if($ms === -1) |
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usleep(100000); |
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// see pull request https://github.com/jmathai/php-multi-curl/pull/17 |
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// details here http://curl.haxx.se/libcurl/c/libcurl-errors.html |
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if($ms >= CURLM_CALL_MULTI_PERFORM) |
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{ |
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do{ |
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$this->execStatus = curl_multi_exec($this->mc, $this->running); |
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usleep(intval($innerSleepInt)); |
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$innerSleepInt = intval(max(1, ($innerSleepInt*$this->sleepIncrement))); |
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}while($this->execStatus==CURLM_CALL_MULTI_PERFORM); |
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$innerSleepInt = 1; |
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} |
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$this->storeResponses(); |
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if(isset($this->responses[$key]['data'])) |
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{ |
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return $this->responses[$key]; |
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} |
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} |
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return null; |
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} |
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return false; |
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} |
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public static function getSequence() |
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{ |
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return new MultiCurlSequence(self::$timers); |
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} |
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public static function getTimers() |
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{ |
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return self::$timers; |
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} |
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public function inject($key, $value) |
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{ |
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$this->$key = $value; |
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} |
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private function getKey($ch) |
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{ |
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return (string)$ch; |
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} |
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private function headerCallback($ch, $header) |
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{ |
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$_header = trim($header); |
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$colonPos= strpos($_header, ':'); |
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if($colonPos > 0) |
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{ |
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$key = substr($_header, 0, $colonPos); |
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$val = preg_replace('/^\W+/','',substr($_header, $colonPos)); |
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$this->responses[$this->getKey($ch)]['headers'][$key] = $val; |
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} |
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return strlen($header); |
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} |
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private function storeResponses() |
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{ |
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while($done = curl_multi_info_read($this->mc)) |
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{ |
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$this->storeResponse($done); |
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} |
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} |
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private function storeResponse($done, $isAsynchronous = true) |
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{ |
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$key = $this->getKey($done['handle']); |
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$this->stopTimer($key, $done); |
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if($isAsynchronous) |
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$this->responses[$key]['data'] = curl_multi_getcontent($done['handle']); |
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else |
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$this->responses[$key]['data'] = curl_exec($done['handle']); |
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$this->responses[$key]['response'] = $this->responses[$key]['data']; |
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foreach($this->properties as $name => $const) |
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{ |
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$this->responses[$key][$name] = curl_getinfo($done['handle'], $const); |
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} |
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if($isAsynchronous) |
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curl_multi_remove_handle($this->mc, $done['handle']); |
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curl_close($done['handle']); |
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} |
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private function startTimer($key) |
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{ |
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self::$timers[$key]['start'] = microtime(true); |
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} |
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private function stopTimer($key, $done) |
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{ |
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self::$timers[$key]['end'] = microtime(true); |
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self::$timers[$key]['api'] = curl_getinfo($done['handle'], CURLINFO_EFFECTIVE_URL); |
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self::$timers[$key]['time'] = curl_getinfo($done['handle'], CURLINFO_TOTAL_TIME); |
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self::$timers[$key]['code'] = curl_getinfo($done['handle'], CURLINFO_HTTP_CODE); |
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} |
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public static function getInstance() |
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{ |
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if(self::$inst == null) |
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{ |
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self::$singleton = 1; |
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self::$inst = new MultiCurl(); |
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} |
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return self::$inst; |
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} |
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} |
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/* |
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* Credits: |
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* - (1) Alistair pointed out that curl_multi_add_handle can return CURLM_CALL_MULTI_PERFORM on success. |
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*/ |
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jmathai /
php-multi-curl
