## Runtime Configuration

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

Igbinary Configure Options
Name | Default | Changeable | Changelog
--- | --- | --- | ---
igbinary.compact_strings | 1 | `INI_ALL` |

Session Configuration Options Affecting Igbinary Behavior
Name | Default | Changeable | Changelog
--- | --- | --- | ---
session.save_handler | "files" | `INI_ALL` |

For further details and definitions of the INI_* modes, see the Where a configuration setting may be set.

Here's a short explanation of the configuration directives.

`igbinary.compact_strings` bool
  Enable or disable compacting of duplicate strings. The default is On.
`session.save_handler` string
  Igbinary is used as session handler by setting this value to `igbinary`.

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