includes/htmlform/HTMLIntField.php

   1 <?php
   2 /**
   3  * A field that must contain a number
   4  */
   5 class HTMLIntField extends HTMLFloatField {
   6         function validate( $value, $alldata ) {
   7                 $p = parent::validate( $value, $alldata );
   8
   9                 if ( $p !== true ) {
  10                         return $p;
  11                 }
  12
  13                 # http://dev.w3.org/html5/spec/common-microsyntaxes.html#signed-integers
  14                 # with the addition that a leading '+' sign is ok. Note that leading zeros
  15                 # are fine, and will be left in the input, which is useful for things like
  16                 # phone numbers when you know that they are integers (the HTML5 type=tel
  17                 # input does not require its value to be numeric).  If you want a tidier
  18                 # value to, eg, save in the DB, clean it up with intval().
  19                 if ( ! preg_match( '/^((\+|\-)?\d+)?$/', trim( $value ) )
  20                 ) {
  21                         return $this->msg( 'htmlform-int-invalid' )->parseAsBlock();
  22                 }
  23
  24                 return true;
  25         }
  26 }