## Runtime Configuration

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

Xhprof Configure Options
Name | Default | Changeable | Changelog
--- | --- | --- | ---
xhprof.output_dir | "" | `INI_ALL` |

Here's a short explanation of the configuration directives.

`xhprof.output_dir` string

  Directory used by the default implementation of the iXHProfRuns interface (namely, the XHProfRuns_Default class) for storing XHProf runs.

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