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PHP Manual

## Runtime Configuration

The behaviour of these functions is affected by settings in php.ini.

Filter Configuration Options
Name | Default | Changeable | Changelog
--- | --- | --- | ---
filter.default | "unsafe_raw" | PHP_INI_PERDIR | PHP_INI_ALL in filter <= 0.9.4. Available since PHP 5.2.0.
filter.default_flags | NULL | PHP_INI_PERDIR | PHP_INI_ALL in filter <= 0.9.4. Available since PHP 5.2.0.

For further details and definitions of the PHP_INI_* modes, see the Where a configuration setting may be set.

Here's a short explanation of the configuration directives.

`filter.default` string

  Filter all $_GET, $_POST, $_COOKIE, $_REQUEST and $_SERVER data by this filter. Original data can be accessed through filter_input().

  Accepts the name of the filter you like to use by default. See the existing filter list for the list of the filter names.

`filter.default_flags` integer

  Default flags

Installation
Resource Types
Installing/Configuring
PHP Manual