PHP Verification upload File type

First Kind

The code is as follows	Copy Code
function ($file _name, $pass _type=array (' jpg ', ' jpeg ', ' gif ', ' BMP ', ' png ')) { $yx _file = $pass _type; $KZM = substr (STRRCHR ($file _name, "."), 1); $is _img = In_array (Strtolower ($KZM), $yx _file); if ($is _img) { return true; }else{ return false; } }

Second, using the getimagesize function instance, this is relatively safer than the one above.

code is as follows	copy code
<?php List ($width, $height, $type, $attr) = getimagesize ("img/flag.jpg"); If (strtolowerr$type!= ' gif ') { die (' picture type is not '); } Echo "?