最简单的PHP表单验证库？

Question

我需要一个简单的php库，该库可用于轻松地将规则和字段名传递给它，然后可以轻松执行验证。还应该有一种简单的方法来检索错误。

有什么建议么？

Answer 1

我编写了自己的简单类，将多年来收集的一些正则表达式与PHP的sanatize和filter函数结合在一起。

<?
/**
 * Pork Formvalidator. validates fields by regexes and can sanatize them. Uses PHP filter_var built-in functions and extra regexes 
 * @package pork
 */


/**
 * Pork.FormValidator
 * Validates arrays or properties by setting up simple arrays
 * 
 * @package pork
 * @author SchizoDuckie
 * @copyright SchizoDuckie 2009
 * @version 1.0
 * @access public
 */
class FormValidator
{
    public static $regexes = Array(
            'date' => "^[0-9]{4}[-/][0-9]{1,2}[-/][0-9]{1,2}\$",
            'amount' => "^[-]?[0-9]+\$",
            'number' => "^[-]?[0-9,]+\$",
            'alfanum' => "^[0-9a-zA-Z ,.-_\\s\?\!]+\$",
            'not_empty' => "[a-z0-9A-Z]+",
            'words' => "^[A-Za-z]+[A-Za-z \\s]*\$",
            'phone' => "^[0-9]{10,11}\$",
            'zipcode' => "^[1-9][0-9]{3}[a-zA-Z]{2}\$",
            'plate' => "^([0-9a-zA-Z]{2}[-]){2}[0-9a-zA-Z]{2}\$",
            'price' => "^[0-9.,]*(([.,][-])|([.,][0-9]{2}))?\$",
            '2digitopt' => "^\d+(\,\d{2})?\$",
            '2digitforce' => "^\d+\,\d\d\$",
            'anything' => "^[\d\D]{1,}\$"
    );
    private $validations, $sanatations, $mandatories, $errors, $corrects, $fields;


    public function __construct($validations=array(), $mandatories = array(), $sanatations = array())
    {
        $this->validations = $validations;
        $this->sanatations = $sanatations;
        $this->mandatories = $mandatories;
        $this->errors = array();
        $this->corrects = array();
    }

    /**
     * Validates an array of items (if needed) and returns true or false
     *
     */
    public function validate($items)
    {
        $this->fields = $items;
        $havefailures = false;
        foreach($items as $key=>$val)
        {
            if((strlen($val) == 0 || array_search($key, $this->validations) === false) && array_search($key, $this->mandatories) === false) 
            {
                $this->corrects[] = $key;
                continue;
            }
            $result = self::validateItem($val, $this->validations[$key]);
            if($result === false) {
                $havefailures = true;
                $this->addError($key, $this->validations[$key]);
            }
            else
            {
                $this->corrects[] = $key;
            }
        }

        return(!$havefailures);
    }

    /**
     *
     *  Adds unvalidated class to thos elements that are not validated. Removes them from classes that are.
     */
    public function getScript() {
        if(!empty($this->errors))
        {
            $errors = array();
            foreach($this->errors as $key=>$val) { $errors[] = "'INPUT[name={$key}]'"; }

            $output = '$$('.implode(',', $errors).').addClass("unvalidated");'; 
            $output .= "alert('there are errors in the form');"; // or your nice validation here
        }
        if(!empty($this->corrects))
        {
            $corrects = array();
            foreach($this->corrects as $key) { $corrects[] = "'INPUT[name={$key}]'"; }
            $output .= '$$('.implode(',', $corrects).').removeClass("unvalidated");';   
        }
        $output = "<script type='text/javascript'>{$output} </script>";
        return($output);
    }


    /**
     *
     * Sanatizes an array of items according to the $this->sanatations
     * sanatations will be standard of type string, but can also be specified.
     * For ease of use, this syntax is accepted:
     * $sanatations = array('fieldname', 'otherfieldname'=>'float');
     */
    public function sanatize($items)
    {
        foreach($items as $key=>$val)
        {
            if(array_search($key, $this->sanatations) === false && !array_key_exists($key, $this->sanatations)) continue;
            $items[$key] = self::sanatizeItem($val, $this->validations[$key]);
        }
        return($items);
    }


    /**
     *
     * Adds an error to the errors array.
     */ 
    private function addError($field, $type='string')
    {
        $this->errors[$field] = $type;
    }

    /**
     *
     * Sanatize a single var according to $type.
     * Allows for static calling to allow simple sanatization
     */
    public static function sanatizeItem($var, $type)
    {
        $flags = NULL;
        switch($type)
        {
            case 'url':
                $filter = FILTER_SANITIZE_URL;
            break;
            case 'int':
                $filter = FILTER_SANITIZE_NUMBER_INT;
            break;
            case 'float':
                $filter = FILTER_SANITIZE_NUMBER_FLOAT;
                $flags = FILTER_FLAG_ALLOW_FRACTION | FILTER_FLAG_ALLOW_THOUSAND;
            break;
            case 'email':
                $var = substr($var, 0, 254);
                $filter = FILTER_SANITIZE_EMAIL;
            break;
            case 'string':
            default:
                $filter = FILTER_SANITIZE_STRING;
                $flags = FILTER_FLAG_NO_ENCODE_QUOTES;
            break;

        }
        $output = filter_var($var, $filter, $flags);        
        return($output);
    }

    /** 
     *
     * Validates a single var according to $type.
     * Allows for static calling to allow simple validation.
     *
     */
    public static function validateItem($var, $type)
    {
        if(array_key_exists($type, self::$regexes))
        {
            $returnval =  filter_var($var, FILTER_VALIDATE_REGEXP, array("options"=> array("regexp"=>'!'.self::$regexes[$type].'!i'))) !== false;
            return($returnval);
        }
        $filter = false;
        switch($type)
        {
            case 'email':
                $var = substr($var, 0, 254);
                $filter = FILTER_VALIDATE_EMAIL;    
            break;
            case 'int':
                $filter = FILTER_VALIDATE_INT;
            break;
            case 'boolean':
                $filter = FILTER_VALIDATE_BOOLEAN;
            break;
            case 'ip':
                $filter = FILTER_VALIDATE_IP;
            break;
            case 'url':
                $filter = FILTER_VALIDATE_URL;
            break;
        }
        return ($filter === false) ? false : filter_var($var, $filter) !== false ? true : false;
    }



}

现在，这需要在此处看到的某些javascript的mootools，但是您可以轻松地将其更改为您喜欢的javascript框架。它所做的只是查找元素，并向其中添加“未验证的”
CSS类。

使用就像我一直想要的那样简单：

例：

$validations = array(
    'name' => 'anything',
    'email' => 'email',
    'alias' => 'anything',
    'pwd'=>'anything',
    'gsm' => 'phone',
    'birthdate' => 'date');
$required = array('name', 'email', 'alias', 'pwd');
$sanatize = array('alias');

$validator = new FormValidator($validations, $required, $sanatize);

if($validator->validate($_POST))
{
    $_POST = $validator->sanatize($_POST);
    // now do your saving, $_POST has been sanatized.
    die($validator->getScript()."<script type='text/javascript'>alert('saved changes');</script>");
}
else
{
    die($validator->getScript());
}

要仅验证一个元素：

$validated = new FormValidator()->validate('blah@bla.', 'email');

要清理一个元素：

$sanatized = new FormValidator()->sanatize('<b>blah</b>', 'string');

关于此类的最酷的事情是，您可以使用ajax或iframe目标发送表单并执行生成的脚本。无需刷新页面或将相同的表单数据重新发送回浏览器:)此外，如果脚本需要更改，则无需进行过度设计的框架分析，只需按需要进行更改即可：)

哦，是的，随时随地使用此功能。没有许可证