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# 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. Returns the old value on success, `FALSE` on failure. The configuration option will keep this new value during the script's execution, and will be restored at the script's ending.

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

See also: get_cfg_var(), ini_get(), ini_get_all(), ini_restore() and How to change configuration settings

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