PHP Manual: Runtime Configuration

Runtime Configuration

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

**Iconv Configure Options**
Name	Default	Changeable	Changelog
iconv.input_encoding	""	PHP_INI_ALL	Available since PHP 4.0.5. Deprecated in PHP 5.6.0.
iconv.output_encoding	""	PHP_INI_ALL	Available since PHP 4.0.5. Deprecated in PHP 5.6.0.
iconv.internal_encoding	""	PHP_INI_ALL	Available since PHP 4.0.5. Deprecated in PHP 5.6.0.

Here's a short explanation of the configuration directives.

Warning

Some systems (like IBM AIX) use "ISO8859-1" instead of "ISO-8859-1" so this value has to be used in configuration options and function parameters.

iconv.input_encoding string: Warning
This feature has been DEPRECATED as of PHP 5.6.0. Relying on this feature is highly discouraged.

PHP 5.6 and later users should leave this empty and set default_charset instead.
iconv.output_encoding string: Warning
This feature has been DEPRECATED as of PHP 5.6.0. Relying on this feature is highly discouraged.

PHP 5.6 and later users should leave this empty and set default_charset instead.
iconv.internal_encoding string: Warning
This feature has been DEPRECATED as of PHP 5.6.0. Relying on this feature is highly discouraged.

PHP 5.6 and later users should leave this empty and set default_charset instead.