Runtime Configuration

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

**Iconv Configure Options**
Name	Default	Changeable	Changelog
iconv.input_encoding	"ISO-8859-1"	PHP_INI_ALL	Available since PHP 4.0.5.
iconv.output_encoding	"ISO-8859-1"	PHP_INI_ALL	Available since PHP 4.0.5.
iconv.internal_encoding	"ISO-8859-1"	PHP_INI_ALL	Available since PHP 4.0.5.

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.