PHP filter_input_array() Function
Example
Check if the external variable "email" is sent to the PHP page, through the "get" method, and also check if it is a valid email address:
<?php
if (!filter_input(INPUT_GET, "email",
FILTER_VALIDATE_EMAIL)) {
echo("Email is not valid");
} else {
echo("Email
is valid");
}
?>
Run example »
Definition and Usage
The filter_input_array() function gets external variables (e.g. from form input) and optionally filters them.
This function is useful for retrieving/filtering many values instead of calling filter_input() many times.
Syntax
filter_input_array(type, definition, add_empty)
| Parameter | Description |
|---|---|
| type | Required. The input type to check for. Can be one of the following:
|
| definition | Optional. Specifies an array of filter arguments. A valid array key is a variable name, and a valid value is a filter name or ID, or an array specifying the filter, flags and options. This parameter can also be a single filter name/ID; then all values in the input array are filtered by the specified filter |
| add_empty | Optional. A Boolean value. When set to TRUE it add missing keys as NULL to the return value. Default value is TRUE |
Technical Details
| Return Value: |
Returns an array containing the values of the variables on success, or FALSE on failure |
|---|---|
| PHP Version: | 5.2.0+ |
Example
In this example we use the filter_input_array() function to filter three POST variables. The received POST variables is a name, an age and an e-mail address:
<?php
$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_input_array(INPUT_POST, $filters));
?>
The output of the code should be:
Array
(
[name] => Peter
[age] => 41
[email] => peter@example.com
)
Complete PHP Filter Reference
