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<?php
/**
* A field that must contain a number
*/
class HTMLIntField extends HTMLFloatField {
function validate( $value, $alldata ) {
$p = parent::validate( $value, $alldata );
if ( $p !== true ) {
return $p;
}
# http://www.w3.org/TR/html5/infrastructure.html#signed-integers
# with the addition that a leading '+' sign is ok. Note that leading zeros
# are fine, and will be left in the input, which is useful for things like
# phone numbers when you know that they are integers (the HTML5 type=tel
# input does not require its value to be numeric). If you want a tidier
# value to, eg, save in the DB, clean it up with intval().
if ( !preg_match( '/^((\+|\-)?\d+)?$/', trim( $value ) ) ) {
return $this->msg( 'htmlform-int-invalid' )->parseAsBlock();
}
return true;
}
}
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