php实现的Curl封装类Curl.class.php用法实例分析

PHP编程
<?php
//curl类
class Curl
{
 function Curl(){
  return true;
 }
 function execute($method,$url,$fields='',$userAgent='',$httpHeaders='',$username='',$password=''){
  $ch = Curl::create();
  if(false === $ch){
   return false;
  }
  if(is_string($url) && strlen($url)){
   $ret = curl_setopt($ch,CURLOPT_URL,$url);
  }else{
   return false;
  }
  //是否显示头部信息
  curl_setopt($ch,CURLOPT_HEADER,false);
  //
  curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
  if($username != ''){
   curl_setopt($ch,CURLOPT_USERPWD,$username . ':' . $password);
  }
  $method = strtolower($method);
  if('post' == $method){
   curl_setopt($ch,CURLOPT_POST,true);
   if(is_array($fields)){
    $sets = array();
    foreach ($fields AS $key => $val){
     $sets[] = $key . '=' . urlencode($val);
    }
    $fields = implode('&',$sets);
   }
   curl_setopt($ch,CURLOPT_POSTFIELDS,$fields);
  }else if('put' == $method){
   curl_setopt($ch,CURLOPT_PUT,true);
  }
  //curl_setopt($ch,CURLOPT_PROGRESS,true);
  //curl_setopt($ch,CURLOPT_VERBOSE,CURLOPT_MUTE,false);
  curl_setopt($ch,CURLOPT_TIMEOUT,10);//设置curl超时秒数
  if(strlen($userAgent)){
   curl_setopt($ch,CURLOPT_USERAGENT,$userAgent);
  }
  if(is_array($httpHeaders)){
   curl_setopt($ch,CURLOPT_HTTPHEADER,$httpHeaders);
  }
  $ret = curl_exec($ch);
  if(curl_errno($ch)){
   curl_close($ch);
   return array(curl_error($ch),curl_errno($ch));
  }else{
   curl_close($ch);
   if(!is_string($ret) || !strlen($ret)){
    return false;
   }
   return $ret;
  }
 }
 function post($url,$fields,$userAgent = '',$httpHeaders = '',$username = '',$password = ''){
  $ret = Curl::execute('POST',$userAgent,$httpHeaders,$username,$password);
  if(false === $ret){
   return false;
  }
  if(is_array($ret)){
   return false;
  }
  return $ret;
 }
 function get($url,$password = ''){
  $ret = Curl::execute('GET','',$password);
  if(false === $ret){
   return false;
  }
  if(is_array($ret)){
   return false;
  }
  return $ret;
 }
 function create(){
  $ch = null;
  if(!function_exists('curl_init')){
   return false;
  }
  $ch = curl_init();
  if(!is_resource($ch)){
   return false;
  }
  return $ch;
 }
}
?>

PHP编程
$curl = new Curl();
$curl->get('http://www.XXX.com/');

PHP编程
$curl = new Curl();
$curl->get('http://www.XXX.com/','p=1&time=0');