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PHP filter_var_array() Function


PHP Filter Reference Complete PHP Filter Reference

Definition and Usage

The filter_var_array() function gets multiple variables and optionally filters them

This function is useful for filtering many values without calling filter_var() over and over.

Returns an array of values of the requested variables on success or FALSE on failure.

Syntax

filter_var_array(array, args)

Parameter Description
array Required. Specifies an array with string keys containing the data to filter
args Optional. Specifies an array of filter arguments. A valid array key is a variable name and a valid value is a filter ID, or an array specifying the filter, flags and options.

This parameter can also be a single filter ID, if so, all values in the input array are filtered by the specified filter

A filter ID can be an ID name (like FILTER_VALIDATE_EMAIL) or an ID number (like 274)

 

Tips and Notes

Tip: Check the Complete PHP Filter Reference for possible filters to use with this function.


Example

<?php
$arr = array
  (
  "name" => "peter griffin",
  "age" => "41",
  "email" => "peter@example.com",
  );

$filters = array
  (
  "name" => array
    (
    "filter"=>FILTER_CALLBACK,
    "flags"=>FILTER_FORCE_ARRAY,
    "options"=>"ucwords"
    ),
  "age" => array
    (
    "filter"=>FILTER_VALIDATE_INT,
    "options"=>array
      (
      "min_range"=>1,
      "max_range"=>120
      )
    ),
  "email"=> FILTER_VALIDATE_EMAIL,
  );

print_r(filter_var_array($arr, $filters));
?>

The output of the code should be:

Array
  (
  [name] => Peter Griffin
  [age] => 41
  [email] => peter@example.com
  )


PHP Filter Reference Complete PHP Filter Reference

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