proc_nice()

proc_nice() — Change the priority of the current process.

Built-in function of PHP 8.5. The manual lists it as available in PHP 5, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.

What it does

proc_nice() changes the priority of the current process by the amount specified in priority. A positive priority will lower the priority of the current process, whereas a negative priority will raise the priority.

Signature

proc_nice(int $priority): bool

Parameters

Return value

Returns true on success or false on failure. If an error occurs, like the user lacks permission to change the priority, an error of level E_WARNING is also generated.

Example

A runnable snippet:

// Highest priority proc_nice(-20);

Changelog

All PHP 8.5 built-in functions

Reference card built from the PHP manual page proc_nice() (PHP documentation, CC BY 3.0). The page is generated from the manual, so the wording of the parameter and return value text follows php.net.