PHP generates speech

<?php
	/**
	 * 测试语音
	 */
	require &#39;../common.inc.php&#39;;

	require DT_ROOT.&#39;/api/speech/AipSpeech.php&#39;;

        $client = new AipSpeech(APP_ID, API_KEY, SECRET_KEY);

	$result = $client->synthesis(&#39;您有一条财务审批，请注意查收！&#39;, &#39;zh&#39;, 1, array(
        &#39;vol&#39; => 5,));

        // 识别正确返回语音二进制 错误则返回json 参照下面错误码
        if(!is_array($result)){
            file_put_contents(&#39;audio.mp3&#39;, $result);
        }	

       echo &#39; <embed src="audio.mp3" hidden="false" autostart="true" loop="true" width="0" height="0">&#39;;
?>