php 微信接口开发

// 示例代码
function checkSignature($token, $signature, $timestamp, $nonce) {
    $tmpArr = array($token, $timestamp, $nonce);
    sort($tmpArr, SORT_STRING);
    $tmpStr = implode($tmpArr);
    $tmpStr = sha1($tmpStr);

    if ($tmpStr == $signature) {
        return true;
    } else {
        return false;
    }
}

// 示例代码
function sendMessage($access_token, $openid, $content) {
    $url = "https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token={$access_token}";
    $data = array(
        'touser' => $openid,
        'msgtype' => 'text',
        'text' => array(
            'content' => $content
        )
    );
    $json_data = json_encode($data);
    $result = http_post($url, $json_data);
    return json_decode($result, true);
}

function http_post($url, $data) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    $output = curl_exec($ch);
    curl_close($ch);
    return $output;
}