php分别模拟发送GET和POST请求，非常实用的额，也可作PHP CURL入门级的理解教材的，示例代码如下：

<?php


function httpRequest($url,$method,$params=array()){
	if(trim($url)==''||!in_array($method,array('get','post'))||!is_array($params)){
		return false;
	}
	$curl=curl_init();
	curl_setopt($curl,CURLOPT_RETURNTRANSFER,1);
	curl_setopt($curl,CURLOPT_HEADER,0 ) ;
	switch($method){
		case 'get':
			$str='?';
			foreach($params as $k=>$v){
				$str.=$k.'='.$v.'&';
			}
			$str=substr($str,0,-1);
			$url.=$str;//$url=$url.$str;
			curl_setopt($curl,CURLOPT_URL,$url);
		break;
		case 'post':
			curl_setopt($curl,CURLOPT_URL,$url);
			curl_setopt($curl,CURLOPT_POST,1 );
			curl_setopt($curl,CURLOPT_POSTFIELDS,$params);
		break;
		default:
			$result='';
		break;
	}
	if(isset($result)){
		$result=curl_exec($curl);
	}
	curl_close($curl);
	return $result;
}