filter_var_array() function in PHP

The filter_var_array() function is used to filter multiple variables.

Syntax

filter_var_array(arrayname, parameters)

Parameters

• arrayname − An array to filter the data.

• parameters − It specifies an array of filter arguments.

Return

The filter_var_array() function returns an array of values of the requested variables on success or false on failure.

Example

<?php
   $arr = Array (
      "stname" => "Jack",
      "stmarks" => "95",
      "stemail" => "[email protected]",
   ); 
   $filters = array (
      "stname" => array (
         "filter"=>FILTER_CALLBACK,
         "flags"=>FILTER_FORCE_ARRAY,
         "options"=>"ucwords"
      ),
      "stmarks" => array (
         "filter"=>FILTER_VALIDATE_INT,
         "options"=>array (
            "min_range"=>1,
            "max_range"=>100
         )
      ),
      "stemail"=> FILTER_VALIDATE_EMAIL,
   );
   print_r(filter_var_array($arr, $filters));
?>

The following is the output.

Array
(
   [stname] => Jack
   [stmarks] => 95
   [stemail] => [email protected]
)