Remove filenames with 'not allowed' extensions in an array in PHP

Question

Suppose I have a PHP array of file names like $f = [ 'file1.jpg', file2.png', 'file3.bmp', 'file4.zip', 'file5.txt'... ];

Now how do I remove all the files from the array with not allowed extension, in this case remove everything except .jpg and .png ?

score 1 · Answer 1 · answered Sep 08 '15 at 17:14

1

try this code, you can add mode allowed extensions in $allowed array, but without dot

$f = array('file1.jpg', 'file2.png', 'file3.bmp', 'file4.zip', 'file5.txt' );
$allowed = array('jpg','png');

echo "<pre>before removing";
print_r($f);
echo "</pre>";

    foreach($f as $k=>$v){
        $ext = end(explode(".",$v));
        if(!in_array($ext,$allowed)){
            unset($f[$k]);
        }
    }

echo "<pre>after removing";
print_r($f);
echo "</pre>";

answered Sep 08 '15 at 17:14

alamnaryab

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I am getting PHP Runtime Notice : Only variables should be passed by reference, at the line : $ext = end(explode(".",$v)); – StudentX Sep 09 '15 at 01:35
with above 2 arrays I am getting any notice or error, you may have some other issue. – alamnaryab Sep 09 '15 at 08:10
`http://codepad.org/2idYbBvA` – alamnaryab Sep 09 '15 at 08:26

Remove filenames with 'not allowed' extensions in an array in PHP

1 Answers1