getimagesize

[Porl123]

Here's a function I've been using to validate image link extensions and it works but it lags the page depending on how many many pictures it validates. Does anyone know how I'd make this a bit more efficient or perhaps a different method of validating?

 

[pre]

function images($link) {

$info = @getimagesize($link);

if($info['mime'] == 'image/gif') {

$a = 1;

} elseif($info['mime'] == 'image/jpeg') {

$a = 1;

} elseif($info['mime'] == 'image/png') {

$a = 1;

} elseif($info['mime'] == 'image/wbmp') {

$a = 1;

} else {

$a = 0;

}

 

if($a == 1) {

$ret = $link;

} else {

$ret = '';

}

 

return $ret;

}

 

[/pre]

 

Thanks people!

[Porl123]

Nobody have any ideas?

[premiso]

Honestly, it looks as efficient as it can be. Simple as that.

[DarkWater]

<?php
function images($link) {
    $info = @getimagesize($link);
    $types = array("image/gif", "image/jpeg", "image/png", "image/wbmp");
    if (in_array($info['mime'], $types)) {
        return $link;
    }
    return false;
}