# ini_set

(PHP 4, PHP 5)

ini_set — Sets the value of a configuration option

### Description

string ini_set ( string `$varname` , string `$newvalue` )

Sets the value of the given configuration option. The configuration option will keep this new value during the script's execution, and will be restored at the script's ending.

### Parameters

`varname`

  Not all the available options can be changed using ini_set(). There is a list of all available options in the appendix.

`newvalue`

  The new value for the option.

### Return Values

Returns the old value on success, `FALSE` on failure.

### See Also

- get_cfg_var()
- ini_get()
- ini_get_all()
- ini_restore()
- How to change configuration settings