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<?php |
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namespace JMathai\PhpMultiCurl; |
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use JMathai\PhpMultiCurl\Manager; |
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use JMathai\PhpMultiCurl\Sequence; |
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use JMathai\PhpMultiCurl\MultiException; |
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use JMathai\PhpMultiCurl\MultiInvalidParameterException; |
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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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throw new MultiException('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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$this->_properties = array( |
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'code' => CURLINFO_HTTP_CODE, |
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'time' => CURLINFO_TOTAL_TIME, |
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'length'=> CURLINFO_CONTENT_LENGTH_DOWNLOAD, |
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'type' => CURLINFO_CONTENT_TYPE, |
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'url' => CURLINFO_EFFECTIVE_URL |
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); |
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} |
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public function reset() |
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{ |
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$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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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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throw new MultiInvalidParameterException('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 || $code === CURLM_CALL_MULTI_PERFORM) { |
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do { |
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$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 Manager($key); |
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} else { |
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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 ($key != null) { |
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if (isset($this->_responses[$key]['code'])) { |
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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 || $this->_execStatus == CURLM_CALL_MULTI_PERFORM)) { |
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usleep(intval($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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} |
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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 ($ms >= CURLM_CALL_MULTI_PERFORM) { |
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do { |
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$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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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 Sequence(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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$key = substr($_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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$this->_storeResponse($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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} |
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$this->_responses[$key]['response'] = $this->_responses[$key]['data']; |
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foreach ($this->_properties as $name => $const) { |
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$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, $done['handle']); |
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} |
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curl_close($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::$_inst == null) { |
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self::$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
