php 上传音频文件并获取时长

 <input type="file" name="audio" id="voice_file" style="display: inline-block;" accept="audio/mp3">
 <audio id="audio" controls autoplay="" style="display: none; "></audio>
//上传
$("#voice_file").on("change", function () {
        var objUrl = upload_file(this.files[0]);
        if (objUrl.code == 1) {
            $('#video_url').val(objUrl.data.photo)
            $('.imgWrap').html('<audio height="150" src="'+objUrl.data.photo+'" controls id="video_control"></audio>')

            var audioFile = get_object_uRL(this.files[0]);
            $("#audio").attr("src", audioFile);
            $("#audio")[0].pause();
            $("#audio").show();
            getTime();
        } else {
            layer.msg(objUrl.msg, {icon: 5});
        }

    });
//获取时长
    function getTime() {
        setTimeout(function () {
            var duration = $("#audio")[0].duration;
            if(isNaN(duration)){
                getTime();
            }else{
                console.info("该歌曲的总时间为："+$("#audio")[0].duration+"秒")
                $('#ma_time').val(duration)
            }
        }, 10);
    }