2009-04-10 10 views

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61

J'ai écrit moi-même une classe simple, en combinant quelques regex que j'ai collectées au fil des ans avec les fonctions de sanatize et de filtrage de PHP.

<? 
/** 
* 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; 
    }  



} 

Maintenant, cela nécessite Mootools pour certains le javascript que vous voyez ici, mais vous pouvez facilement changer cela à votre framework javascript préféré. Tout ce qu'il fait est de rechercher l'élément et d'y ajouter la classe CSS 'non validé'.

L'utilisation est aussi simple que j'ai toujours jamais voulu:

Exemple:

$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()); 
} 

Pour valider un seul élément:

$validated = new FormValidator()->validate('[email protected]', 'email'); 

Pour sanatize un seul élément:

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

T La chose la plus cool à propos de cette classe est que vous pouvez envoyer votre formulaire avec une cible ajax ou iframe et exécuter le script résultant. Pas besoin d'actualiser la page ou de renvoyer les mêmes données de formulaire au navigateur :) En outre, si le script doit être modifié, il n'y a pas de framework surconsommable à analyser, il suffit de le modifier comme vous le voulez :)

Oh oui, n'hésitez pas à l'utiliser partout où vous voulez. Aucune licence

+3

Notez que cela ne fonctionnera pas sur les versions PHP avant 5.2 parce que vous utilisez filter_var – Ray

+0

je suppose que vous devriez remplacer 'array_search ($ key, $ this-> validations)' par 'array_key_exists ($ key, $ this-> validations)'. Est-ce exact? – UnLoCo

+0

Génial classe mec! –

12

Si vous voulez programmer vous-même et que vous avez PHP 5.2.0 ou supérieur. Ensuite, vous pouvez regarder dans le filter functions.

2

Vous avez une partie de l'infrastructure de symfony nommé formes symfony, qui peut être utilisé en dehors de l'ensemble du cadre.

Jetez un oeil à the framework documentation.

4

Il y a un inclus dans le code cadre Allumeur, un coup d'oeil here

Je recommande de commencer à utiliser l'un des cadres de PHP;)

23

La réponse de SchizoDuckie ci-dessus était génial. J'ai utilisé son code dans un projet sur lequel je travaille avec la permission de l'auteur. Un problème que j'avais en utilisant ce code était que si un champ obligatoire n'était pas soumis alors il ne serait pas enregistrer une erreur. J'ai modifié le code pour couvrir ce scénario. J'ai également supprimé le code pour générer du code HTML et javascript car mon projet exige la séparation de l'interface utilisateur de la logique par modèle MVC. Le code modifié renvoie simplement le résultat codé JSON. Je republie le code modifié ici au cas où il serait utile aux autres.

<? 
/** 
* 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,}\$", 
      'username' => "^[\w]{3,32}\$" 
); 

private $validations, $sanatations, $mandatories, $equal, $errors, $corrects, $fields; 


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

/** 
* Validates an array of items (if needed) and returns true or false 
* 
* JP modofied this function so that it checks fields even if they are not submitted. 
* for example the original code did not check for a mandatory field if it was not submitted. 
* Also the types of non mandatory fields were not checked. 
*/ 
public function validate($items) 
{ 
    $this->fields = $items; 
    $havefailures = false; 

    //Check for mandatories 
    foreach($this->mandatories as $key=>$val) 
    { 
     if(!array_key_exists($val,$items)) 
     { 
      $havefailures = true; 
      $this->addError($val); 
     } 
    } 

    //Check for equal fields 
    foreach($this->equal as $key=>$val) 
    { 
     //check that the equals field exists 
     if(!array_key_exists($key,$items)) 
     { 
      $havefailures = true; 
      $this->addError($val); 
     } 

     //check that the field it's supposed to equal exists 
     if(!array_key_exists($val,$items)) 
     { 
      $havefailures = true; 
      $this->addError($val); 
     } 

     //Check that the two fields are equal 
     if($items[$key] != $items[$val]) 
     { 
      $havefailures = true; 
      $this->addError($key); 
     } 
    } 

    foreach($this->validations as $key=>$val) 
    { 
      //An empty value or one that is not in the list of validations or one that is not in our list of mandatories 
      if(!array_key_exists($key,$items)) 
      { 
        $this->addError($key, $val); 
        continue; 
      } 

      $result = self::validateItem($items[$key], $val); 

      if($result === false) { 
        $havefailures = true; 
        $this->addError($key, $val); 
      } 
      else 
      { 
        $this->corrects[] = $key; 
      } 
    } 

    return(!$havefailures); 
} 

/* JP 
* Returns a JSON encoded array containing the names of fields with errors and those without. 
*/ 
public function getJSON() { 

    $errors = array(); 

    $correct = array(); 

    if(!empty($this->errors)) 
    {    
     foreach($this->errors as $key=>$val) { $errors[$key] = $val; }    
    } 

    if(!empty($this->corrects)) 
    { 
     foreach($this->corrects as $key=>$val) { $correct[$key] = $val; }     
    } 

    $output = array('errors' => $errors, 'correct' => $correct); 

    return json_encode($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; 
}   
} 
?> 
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