<?php/** * Usage example for HTML_QuickForm, using custom validation rules. * * @author Alexey Borzov <avb@php.net> * * $Id: rules-custom.php,v 1.2 2003/11/03 20:45:23 avb Exp $  */require_once 'HTML/QuickForm.php';require_once 'HTML/QuickForm/Rule.php';class RuleNumericRange extends HTML_QuickForm_Rule{    function validate($value, $options)    {        if (isset($options['min']) && floatval($value) < $options['min']) {            return false;        }        if (isset($options['max']) && floatval($value) > $options['max']) {            return false;        }        return true;    }    function getValidationScript($options = null)    {        $jsCheck = array();        if (isset($options['min'])) {            $jsCheck[] = 'Number({jsVar}) >= ' . $options['min'];        }        if (isset($options['max'])) {            $jsCheck[] = 'Number({jsVar}) <= ' . $options['max'];        }        return array('', "{jsVar} != '' && !(" . implode(' && ', $jsCheck) . ')');    } // end func getValidationScript}// In case you are wondering, this checks whether there are too many// CAPITAL LETTERS in the stringfunction countUpper($value, $limit = null){    if (empty($value)) {        return false;    }    if (!isset($limit)) {        $limit = 0.5;    }    $upper = array_filter(preg_split('//', $value, -1, PREG_SPLIT_NO_EMPTY), 'ctype_upper');    return (count($upper) / strlen($value)) <= $limit;}// BC thingie: it expects the first param to be element namefunction countUpper_old($name, $value, $limit = null){    if (empty($value)) {        return false;    }    if (!isset($limit)) {        $limit = 0.5;    }    $upper = array_filter(preg_split('//', $value, -1, PREG_SPLIT_NO_EMPTY), 'ctype_upper');    return (count($upper) / strlen($value)) <= $limit;}$form =& new HTML_QuickForm('custom');$form->addElement('header', null, 'Custom rule class');// registering the custom rule class$form->registerRule('numRange', null, 'RuleNumericRange');$form->addElement('text', 'rNumber_1_10', 'The number (1-10):');$form->addRule('rNumber_1_10', 'Enter number from 1 to 10', 'numRange', array('min' => 1, 'max' => 10), 'client');// adding an instance of the custom rule class without registering$form->addElement('text', 'rNonnegative', 'Nonnegative number:');$form->addRule('rNonnegative', 'Enter nonnegative number', new RuleNumericRange(), array('min' => 0), 'client');// adding a classname of the custom rule class without registering$form->addElement('text', 'rNonpositive', 'Nonpositive number:');$form->addRule('rNonpositive', 'Enter nonpositive number', 'RuleNumericRange', array('max' => 0), 'client');$form->addElement('header', null, 'Using callbacks');// using callback without registering$form->addElement('text', 'rUpper_0_5', 'Some (preferrably lowercase) text:');$form->addRule('rUpper_0_5', 'There are too many CAPITAL LETTERS', 'callback', 'countUpper');// register with 'callback' type$form->registerRule('upper', 'callback', 'countUpper');$form->addElement('text', 'rUpper_0_25', 'Some (mostly lowercase) text:');$form->addRule('rUpper_0_25', 'There are too many CAPITAL LETTERS', 'upper', 0.25);// BC feature: register with 'function' type$form->registerRule('upperOld', 'function', 'countUpper_old');$form->addElement('text', 'rUpper_0', 'Some lowercase text:');$form->addRule('rUpper_0', 'There are CAPITAL LETTERS, this is not allowed', 'upperOld', 0);$form->addElement('submit', null, 'Send');$form->applyFilter(array('rUpper_0_5', 'rUpper_0_25', 'rUpper_0'), 'trim');$form->applyFilter(array('rNumber_1_10', 'rNonnegative', 'rNonpositive'), 'floatval');$form->validate();$form->display();?>