proc_nice
Change the priority of the current process
Description
bool proc_nice
( int $increment
)
proc_nice is not related to
proc_open and its associated functions in any way.
Parameters
-
increment
-
The new priority value, the value of this may differ on platforms.
on Unix, a low value, such as -20 means high priority
wheras a positive value have a lower priority.
For Windows the increment
parameter have the
following meanings:
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.
Examples
Example #1 Using proc_nice to set the process priority to high
<?php
// Highest priority
proc_nice(-20);
?>
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.
Note:
Windows only
proc_nice will change the current process
priority, even if PHP was compiled using thread safety.