微信获取access_token

<?php
	header("content-type:text/html;charset=utf-8");

	$appid = "#############################";
	$appsecret = "################################";

	$result = get_access_token($appid, $appsecret);
	echo $result;

	function get_access_token($appid,$appsecret)
	{
		#微信获取access_token的接口
		$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$appid&secret=$appsecret";

		#初始化curl
		$ch = curl_init();
		#设置url
		curl_setopt($ch, CURLOPT_URL, $url);
		#设置参数
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
		curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
		#执行并返回结果
		$outopt = curl_exec($ch);
		#检查curl是否执行成功
		if(curl_errno($ch)) {
			echo 'Errno'.curl_error($ch);
		}
		#关闭curl
		curl_close($ch);
		#解析json数据
		$jsoninfo = json_decode($outopt, true);
		#返回access_token
		return $jsoninfo["access_token"];
	}
?>