php curl使用詳解

<?php

class PostCurl extends AbstractCurl {

/**

* 調(diào)用父構(gòu)造方法

*

*/

public function __construct() {

parent::__construct();

}

/**

* 實現(xiàn)cURL主體的抽象方法

*

* @param array $para

*

* @return void

*/

protected function _cUrl($para = array()) {

curl_setopt($this->_ch, CURLOPT_POST, true);

curl_setopt($this->_ch, CURLOPT_POSTFIELDS, $para['data']);

}

}

/**

* cURL抽象類

*

*/

/**

* cURL抽象類

*

*/

abstract class AbstractCurl {

/**

* cURL資源

*

* @var resource

*/

protected $_ch = null;

/**

* URL地址

*

* @var string

*/

protected $_url = '';

/**

* 是否啟用SSL模式

*

* @var boolean

*/

protected $_ssl = false;

/**

* 初始化cURL資源

*

*/

protected function __construct() {

$this->_ch = curl_init();

}

/**

* cURL抽象方法，處理POST、GET、PUT(暫不提供)

*

* @param array $para

*/

abstract protected function _cUrl($para = array());

/**

* 發(fā)送socket連接

*

* @param string $url

* @param array $para

* @param boolean $return

*

* @return mix [void|string]

*/

private function _socket($url, $para, $return) {

$this->_setUrl($url);

/*

* 強制轉(zhuǎn)換為boolean類型，這里不使用(boolean)與settype

*/

if (false === isset($para['header'])) {

$para['header'] = false;

} else {

$para['header'] = true;

}

curl_setopt($this->_ch, CURLOPT_HEADER, $para['header']);

curl_setopt($this->_ch, CURLOPT_TIMEOUT, 10);

/*

* 處理302

*/

if (false === isset($para['location'])) {

$para['location'] = false;

} else {

$para['location'] = true;

}

curl_setopt($this->_ch, CURLOPT_FOLLOWLOCATION, $para['location']);

unset($para['location']);

if(!empty($para['cookieFile'])){

if (false === isset($para['cookieFile'])) {

curl_setopt($this->_ch, CURLOPT_COOKIEFILE, $para['cookieFile'][0]);

curl_setopt($this->_ch, CURLOPT_COOKIEJAR, $para['cookieFile'][0]);

}

}

/*

* exec執(zhí)行結(jié)果是否保存到變量中

*/

if (true === $return) {

curl_setopt($this->_ch, CURLOPT_RETURNTRANSFER, true);

}

/*

* 是否啟用SSL驗證

*/

if (true === $this->_ssl) {

curl_setopt($this->_ch, CURLOPT_SSL_VERIFYHOST, true);

}

/*

* 調(diào)用子類處理方法

*/

$this->_cUrl($para);

$result = curl_exec($this->_ch);

$apiStatus = curl_getinfo($this->_ch);

if(isset($apiStatus['http_code']) && 200 == $apiStatus['http_code']) {

if (true === $return) {

curl_close($this->_ch);

return $result;

}

} elseif(isset($apiStatus['http_code']) && 404 == $apiStatus['http_code']) {

curl_close($this->_ch);

return false;

} else {

curl_close($this->_ch);

return false;

}

}

/**

* 初始化URL

*

* @param string $url

*

* @return boolean [true成功 | false失敗]

*/

private function _setUrl($url) {

$this->_url = $url;

/*

* 以下代碼在PHP > 5.3有效

*/

if (false !== strstr($this->_url, 'https://', true)) {

$this->_ssl = true;

}

return curl_setopt($this->_ch, CURLOPT_URL, $this->_url);

}

/**************************公共接口***********************/

/**

* 發(fā)起通信請求接口

*

* @param string $url

* @param array $para

* @param boolean $return

*

* @return string

*/

final public function socket($url, $para = array(), $return = true) {

if(!empty($this->_ch)){

$this->_ch = curl_init();

}

return $this->_socket($url, $para, $return);

}

}