Filter_xyz_array () işlevleri, örneğin, giriş dizide bulunmayan bir eleman için null dönecektir

<?php

$args = array(
    'foo'    => array(
    	'filter'    => FILTER_VALIDATE_INT,
    	'flags'     => FILTER_REQUIRE_ARRAY,
    	'options'   => array('min_range' => 1, 'max_range' => 4)
    ),
    'bar'   => array(
    	'filter' => FILTER_VALIDATE_INT,
    	'flags'  => FILTER_REQUIRE_SCALAR
    )
);

$input = array(
    'foo'=>array(1,2,3,4)
);

$filtered = filter_var_array($input, $args);
var_dump($filtered);

baskılar

array(2) {
  ["foo"]=>
  array(4) {
    [0]=>
    int(1)
    [1]=>
    int(2)
    [2]=>
    int(3)
    [3]=>
    int(4)
  }
  ["bar"]=>
  NULL
}

isset() returns false for a variable/array element that contains NULL. You can use that to ignore the elements that are set to NULL by the filter functions.
Depending on what you're filtering and the structure of the array returned by the filter function you can even use array_filter() the "clean up" the array.

Ben @ VolkerK cevabını esinlenerek özel bir çözüm kullanarak sona erdi. Ben ne istediğimi daha net ifade olmalıdır. Ben bu bilgileri sorumu güncellemek ettik.

Ben hala daha kolay bir çözüm arıyorum.

Birincisi, bazı sonuç diziler yaptı:

// errors to display
$errors = array();
// fields to ignore in the validation step
$ignore_fields = array();
// return values after validation
$returnvalues = array();

Ben ilk Gerekli alanlar için filtrelenmiş:

function required($string){
return trim($string) == "" ? false : $string;
}

$required_errors = array(
  "firstname" => "Je moet je voornaam invullen.", 
  "lastname" => "Je moet je achternaam invullen.", 
  "email" => "Je moet je e-mailadres invullen."
);

$required_filter = array();
  foreach($required_errors as $requiredfieldname => $error){
    $required_filter[$requiredfieldname] = array(
      'filter' => FILTER_CALLBACK,
      'options' => "required",
      'flags' => FILTER_NULL_ON_FAILURE
    ); 
}

$required_filtered = filter_input_array(INPUT_GET | INPUT_POST, 
     $required_filter);

foreach($required_errors as $required => $error){      
  if(!isset($required_filtered[$required])){
    $errors[$required] = $required_errors[$required];
    $returnvalues[$required] = "";
    $ignore_fields[$required] = "ignored"; // value doesn't matter
  }
}

Sonra boş alanları kontrol ve standart bir değer ile onlara yük

// ignore the other fields if they are empty;
// the actual form has about 10 values here
$maybeempty = array("from", "to", "phonenumber"); 

$optional_defaultvalue = array(
  "from" => 0,
  "to" => 0,
  "phonenumber" => "",
);

$optional_filter = array();
foreach($maybeempty as $field){
  $required_filter[$requiredfieldname] = array(
    'filter' => FILTER_CALLBACK,
    'options' => "required",
    'flags' => FILTER_NULL_ON_FAILURE
  ); 
}

$optional_filtered = filter_input_array(INPUT_GET | INPUT_POST, 
    $required_filter);
foreach($maybeempty as $field){
  if(!isset($optional_filtered[$field])){
    $ignore_fields[$field] = "ignored"; // value doesn't matter
    $returnvalue[$field] = $optional_defaultvalue[$field];
  }
}

Son adımda, ben bir doğrulama dizi, özel hata iletileri oluşturmak ve görmezden alanlarını görmezden, zaten bir hata vardı boş alanları veya alanları atlamak olacaktır:

 $validity_filter = array(
     'email' => array(
       'filter' => FILTER_VALIDATE_EMAIL, 
       'flags' => FILTER_REQUIRE_SCALAR
     ),
     'from' => array(
       'filter' => FILTER_VALIDATE_INT,
       'flags' => FILTER_REQUIRE_SCALAR,
       'options' => array('min_range' => 1964, 'max_range' => 2009)),
     'to' => array(
        'filter' => FILTER_VALIDATE_INT,
        'flags' => FILTER_REQUIRE_SCALAR,
        'options' => array('min_range' => 1964, 'max_range' => 2009))
 );

 // filter all ignored fields
 $validity_filter = array_diff_key($validity_filter, $ignore_fields);
 $validity_filtered = filter_input_array(INPUT_GET | INPUT_POST, 
     $required_filter);

 foreach($validity_filter as $field => $value){
   if($value === false){ // NULL values are checked in a previous step
     $errors[$field] = $validity_errors[$field]; // show error
     $returnvalues[$field] = $_REQUEST[$field]; // return original value
   } else {
     $returnvalues[$field] = $value; // return filtered value
   }
 }

 // process possible errors and response values

PHP filtreler: filter_input_array () filtre işlevi ile isteğe bağlı değerler / opsiyonel formu girişleri Taşıma.

Ben PHP filtreler ile çalışırken isteğe bağlı alanları veya form girişleri işlemek için nasıl basit bir şekilde göstermek gerekir. Başparmak kuralı:

1. TÜM formu gerekli girişleri, & Filtre İsteğe bağlı. Filtrenizde isteğe alanları bırakmayın.
2. ", Null, YANLIŞ arasında ayrım" ve 0 değerleri === karşılaştırma operatörünü kullanın

Gerekli 4 ve 4 isteğe bağlı girişler ile basit bir iletişim formu için örnek kod aşağıda gösterilmiştir

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST"){
/*set validation control variable*/
$input_error_flag = true;

/*set form input validation filters*/
$form_filter = array(
    'first_name'        =>  FILTER_SANITIZE_STRING,
    'middle_name'       =>  FILTER_SANITIZE_STRING,
    'last_name'         =>  FILTER_SANITIZE_STRING,
    'email_address'     =>  FILTER_SANITIZE_EMAIL,
    'postal_address'    =>  FILTER_SANITIZE_NUMBER_INT,
    'street_address'    =>  FILTER_SANITIZE_STRING,
    'telephone_number'  =>  FILTER_SANITIZE_NUMBER_INT,
    'mobile_number'     =>  FILTER_SANITIZE_NUMBER_INT,
);

/*list optional fields or optional form inputs in array*/
$optional_fields = array(
    'middle_name'       => "",  'postal_address'    => "",
    'street_address'    => "",  'mobile_number'     => "",
    );

/*set error display message of each required element*/
$error_description = array(
    'first_name'        =>"Missing or incorrect First Name",
    'last_name'         =>"Missing or incorrect Last Name",
    'email_address'     =>"Missing or incorrect Email Address",
    'telephone_number'  =>"Missing or incorrect Telephone Number",
    );

/*sanitize all form inputs against form_filter*/
$form_data = filter_input_array(INPUT_POST, $form_filter);

/*check form inputs for filter validation errors*/
foreach ($form_data as $form_input => $value){
    /*check if filter failed (false), input not defined (null) or input missing ("")
    * and insert name of form input element into $invalid_array for error display
    */
    if($value === FALSE || $value === NULL || $value == ""){
        /*exclude error display for optional items with empty values*/
        if(!(array_key_exists($form_input, $optional_fields) && $value == "")){
            $invalid_inputs[] = $form_input;
        }
    }
}

/*unset filter validation control variable if no errors*/
if(empty ($invalid_inputs))
                $input_error_flag = false;

/*your calls to SQL functions for INSERT or UPDATE statements go here*/
if(!$input_error_flag){
    functionname::getInstance()->insert_contact_details($form_data);
}
}
?>

Ve nihayet hata ekranı bölümü ile html formu

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title></title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  </head>
  <body>
    <form action="sample.php" method="POST" id="sample">
    <label for="first_name">First Name*</label>
    <input type="text" name="first_name" id="first_name"
           value="<?php echo $form_data['first_name']; ?>"/><br/>
    <label for="middle_name">Middle Name</label>
    <input type="text" name="middle_name" id="middle_name"
           value="<?php echo $form_data['middle_name']; ?>"/><br/>
    <label for="last_name">Last Name*</label>
    <input type="text" name="last_name" id="last_name"
           value="<?php echo $form_data['last_name']; ?>"/><br/>
    <label for="email_address">Email Address*</label>
    <input type="text" name="email_address" id="email_address"
           value="<?php echo $form_data['email_address']; ?>"/><br/>
    <label for="postal_address">Postal Address</label>
    <input type="text" name="postal_address" id="postal_address"
           value="<?php echo $form_data['postal_address']; ?>"/><br/>
    <label for="street_address">Street Address</label>
    <input type="text" name="street_address" id="street_address"
           value="<?php echo $form_data['street_address']; ?>"/><br/>
    <label for="telephone_number">Telephone Number*</label>
    <input type="text" name="telephone_number" id="telephone_number"
           value="<?php echo $form_data['telephone_number']; ?>"/><br/>
    <label for="mobile_number">Mobile Number</label>
    <input type="text" name="mobile_number" id="mobile_number"
           value="<?php echo $form_data['mobile_number']; ?>"/><br/>
    <input type="submit" name="submit" value="submit"><br/>
        <?php
            //display input validation errors on your html form
            if ($input_error_flag){
                foreach($invalid_inputs as $key => $form_input){
                    if(array_key_exists($form_input, $error_description)){
                        echo $error_description[$form_input]."<br/>";
                    }
                }
            }
        ?>
    </form>
  </body>
</html>