note 99830 added to function.explode

Beaware splitting empty strings. <?php $str = ""; $res = explode(",", $str); print_r($res); ?> If you split an empty string, you get back a one-element array with 0 as the key and an empty string for the value. Array ( [0] => ) To solve this, just use array_filter() without callback. Quoting manual page "If the callback function is not supplied, array_filter() will remove all the entries of input that are equal to FALSE.". <?php $str = ""; $res = array_filter(explode(",", $str)); print_r($res); ?> Array ( ) ---- Server IP: 194.8.30.16 Probable Submitter: 85.139.242.226 ---- Manual Page -- http://www.php.net/manual/en/function.explode.php Edit -- https://master.php.net/note/edit/99830 Del: integrated -- https://master.php.net/note/delete/99830/integrated Del: useless -- https://master.php.net/note/delete/99830/useless Del: bad code -- https://master.php.net/note/delete/99830/bad+code Del: spam -- https://master.php.net/note/delete/99830/spam Del: non-english -- https://master.php.net/note/delete/99830/non-english Del: in docs -- https://master.php.net/note/delete/99830/in+docs Del: other reasons-- https://master.php.net/note/delete/99830 Reject -- https://master.php.net/note/reject/99830 Search -- https://master.php.net/manage/user-notes.php