[PHP 获取wav音频文件时长]

readme.md

参考资料:

https://zh.wikipedia.org/wiki/WAV

http://soundfile.sapp.org/doc/WaveFormat/

https://stackoverflow.com/questions/56949033/wav-and-mp3-file-duration-with-php

getWavPlayTime.php

<?php

// 简单版本
$filename = 'LoveMe.wav';
$wavdataoffset = 44;
$wavdataend = filesize($filename);
$fp = fopen($filename, 'rb');
$fseek = fseek($fp, 28);
$bitrate = unpack('V', fread($fp, 4));
$bitrate = $bitrate[1];
$playtime_seconds = (float)(($wavdataend - $wavdataoffset) / $bitrate);
fclose($fp);
$playtime_string = playtimeString($playtime_seconds);
// 可以考虑四舍五入
$playtime_seconds = (int)ceil($playtime_seconds);

echo "秒数:${playtime_seconds}秒\n时长:${playtime_string}\n";