PHP Manual: Change the priority of the current process

Description

bool proc_nice ( int $increment )

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

proc_nice is not related to proc_open and its associated functions in any way.

Parameters

increment: The increment value of the priority change.

Return Values

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.

Notes

Note: Availability

proc_nice will only exist if your system has 'nice' capabilities. 'nice' conforms to: SVr4, SVID EXT, AT&T, X/OPEN, BSD 4.3. This means that proc_nice is not available on Windows.