微信公众平台上传图片，自动回复图片

上传文件（获得：media_id）：

<?php

// 微信参数

$appId = 'appid';

$appSecret = 'appsecret';

$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" . $appId . "&secret=" . $appSecret;

$ch = curl_init ();

curl_setopt ( $ch, CURLOPT_URL, $url );

curl_setopt ( $ch, CURLOPT_SSL_VERIFYPEER, FALSE );

curl_setopt ( $ch, CURLOPT_SSL_VERIFYHOST, FALSE );

curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, 1 );

$output = curl_exec ( $ch );

curl_close ( $ch );

$jsoninfo = json_decode ( $output, true );

$access_token = $jsoninfo ["access_token"];

$url = "http://file.api.weixin.qq.com/cgi-bin/media/upload?access_token=".$access_token."&type=image";

$data =array("media" => "@"."rhlq.jpg");

$result = https_request ( $url, $data );

var_dump ( $result );

function https_request($url, $data = null) {
$curl = curl_init ();
//curl_setopt ( $curl, CURLOPT_SAFE_UPLOAD, false); 
curl_setopt ( $curl, CURLOPT_URL, $url );
curl_setopt ( $curl, CURLOPT_SSL_VERIFYPEER, FALSE );
curl_setopt ( $curl, CURLOPT_SSL_VERIFYHOST, FALSE );
if (! empty ( $data )) {
curl_setopt ( $curl, CURLOPT_POST, 1 );
curl_setopt ( $curl, CURLOPT_POSTFIELDS, $data );
}
curl_setopt ( $curl, CURLOPT_RETURNTRANSFER, 1 );
$output = curl_exec ( $curl );
curl_close ( $curl );
return $output;

}

?>

测试demo：http://download.csdn.net/detail/u010533511/9295355

自动回复代码：

if($keyword == '如何领取'){
$xmlTpl = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>".time()."</CreateTime><MsgType><![CDATA[image]]></MsgType><Image><MediaId><![CDATA[上面代码获得到的media_id]]></MediaId></Image></xml>";
$result = sprintf($xmlTpl, $fromUsername, $toUsername, $time);
echo $result;
}