note 59284 added to function.str-pad

Use str_pad to mask a credit card number. <? $ccnum = $_POST['CC_Number']; $ccmask = str_pad(substr($ccnum, -4), strlen($ccnum), 'x', STR_PAD_LEFT); ?> Works great for storing last 4 digits of credit card number in a database. ---- Manual Page -- http://www.php.net/manual/en/function.str-pad.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+59284 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+59284&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+59284&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+59284&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+59284&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+59284&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+59284&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+59284&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+59284&report=yes Search -- http://master.php.net/manage/user-notes.php