The behaviour of these functions is affected by settings in php.ini.
|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.|
Here's a short explanation of the configuration directives.
Accepts the name of the filter you like to use by default. See the existing filter list for the list of the filter names.