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posix_times — Get process time information in an array (POSIX.1, 4.5.2)


array posix_times(void)


An array of process time accounting information, or FALSE on error.


This function returns process and child process time accounting information in an associative array. All times given are in clock ticks. Depending on the system, there may be 50, 60, 100, or even 1 million on SRV4. The members of the returned array are:

  • ticks: The number of clock ticks since the system since the system booted.

  • utime: Amount of user time used by the current process.

  • stime: Amount of system time used by the current process.

  • cutime: Amount of user time used by the current process and its children.

  • cstime: Amount of system time used by the current process and its children.

Note that when PHP is running as a web server module or CGI process, all of the above values are likely to be very low, since the PHP process is usually very short-lived in such situations.


PHP 3.0.13+, PHP 4.0b4+


Example 1090. Getting time accounting information

if (!$times = posix_times()) {
    echo "Could not get time accounting information.\n";
} else {

PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at The authors of this book have elected not to choose any options under the OPL. This online book was obtained from and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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