<?php
function http_request($url,$data=null){
	$ch=curl_init();
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
	if (!empty($data)){
		curl_setopt($ch, CURLOPT_POST, 1);
		curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
	}
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	$output=curl_exec($ch);
	curl_close($ch);
	return $output;
}
function write_log($activation){

	$dir=CONFIG_ADDR."/../Log";
	if (!is_dir($dir)){
		mkdir($dir);
	}
	$open=fopen($dir."/Function_log.txt","a");
	fwrite($open,date("Y-m-d H:i:s")."\t".$activation."\r\n");
	fclose($open);
}
function downloadImageFromWeiXin($url){
	$ch=curl_init();
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_HEADER, 0);
	curl_setopt($ch, CURLOPT_NOBODY, 0);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	
	$body=curl_exec($ch);
	$header=curl_getinfo($ch);
	curl_close($ch);
	return array_merge(array('body'=>$body),array('header'=>$header));
}
function downfile($file)
{
	$date=basename($file);
	Header( "Content-type:  image/png");
	Header( "Accept-Ranges:   bytes ");
	Header( "Accept-Length: " .filesize($file));
	header( "Content-Disposition:   attachment;   filename= {$date}");
	readfile($file);
}
function getAccesstoken(){
	$dir=CONFIG_ADDR."/../Log";
	
	if (!is_dir($dir)){
		mkdir($dir);
	}
	$token_file=$dir.'/access_token';
	if (file_exists($token_file) && time()-filemtime($token_file)<4800){
		write_log("menu--文件中读取的token:".file_get_contents($token_file));
		$access_token= file_get_contents($token_file);
	}else{
		$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".APPID."&secret=".APPSECRET;
		$result=http_request($url);
		if(!$result){
			write_log("menu-获取token出错");
			echo "menu-获取token出错";
			exit;
		}
	
		$result_obj=json_decode($result);
		file_put_contents($token_file, $result_obj->access_token);
		write_log("menu-url获取的token:".$result_obj->access_token);
		$access_token= $result_obj->access_token;
	}
	return $access_token;
}