What is PhpDig?
PhpDig is a PHP MySQL based
Web Spider & Search Engine.



microtime — Returns the microsecond value for the current time.


int microtime(void)


String containing microseconds and seconds


Gives the microseconds component of the current time. The string returned from this function is made of up the number of microseconds followed by the UNIX epoch time. To perform calculations on this function, you process the output to obtain an actual number. Another option would be to use gettimeofday() to obtain the microseconds component of the current time.

This function can be useful for simple benchmarking. By timing the start and finish of a process in your script, you can determine where the script may require optimization.


PHP 3, PHP 4


Example 205. Simple benchmark

function getmicrotime() {
    // split output from microtime() on a space
    list($usec, $sec) = explode(" ",microtime());
    // append in correct order
    return ((float)$usec + (float)$sec); 

$start = getmicrotime();
for ($i=0; $i < 10000; $i++){
    //loop 10000 times

$finish = getmicrotime();

printf("Processing took %.3f seconds", $finish - $start);

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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