如何在PHP中检查文件是ASCII还是二进制 [英] How to Check if File is ASCII or Binary in PHP

问题描述

是否有一种快速，简单的方法来检查文件是ASCII还是PHP二进制文件?

Is there a quick, simple way to check if a file is ASCII or binary with PHP?

推荐答案

这仅适用于PHP> = 5.3.0，并且并非100％可靠，但是，嘿，这真是太接近了.

This only works for PHP>=5.3.0, and isn't 100% reliable, but hey, it's pretty darn close.

// return mime type ala mimetype extension
$finfo = finfo_open(FILEINFO_MIME);

//check to see if the mime-type starts with 'text'
return substr(finfo_file($finfo, $filename), 0, 4) == 'text';

http://us.php.net/manual/en/ref. fileinfo.php

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