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<?php $allowed_ext = array ( 'bmp', 'jpg', 'jpeg', 'gif', 'pdf' ); $arr = array( 1 => 'file-to-path/thumbs/allowedfile.pdf', 2 => 'file-to-path/thumbs/notallowedfile.psd', 3 => 'file-to-path/project/test/notallowedfile.txt' ); $errors = []; foreach ($arr as $key => $value) { if (!in_array(pathinfo($value, PATHINFO_EXTENSION), $allowed_ext)) { $errors[] = basename($value).' is not allowed.'; unset($arr[$key]); } } print_r($errors); print_r($arr);
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Array ( [0] => notallowedfile.psd is not allowed. [1] => notallowedfile.txt is not allowed. ) Array ( [1] => file-to-path/thumbs/allowedfile.pdf )

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