Function introduction for calculating the runtime of php pages

Source: Internet
Author: User
This article provides a detailed analysis of the function used to calculate the runtime of the php page. For more information, see A function used to calculate the runtime of the php page.
The code is as follows:
/*
@ Calculate the php program running time
*/
Function microtime_float ()
{
List ($ usec, $ sec) = explode ("", microtime ());
Return (float) $ usec + (float) $ sec );
}
// Start timing and place it on the head
$ Starttime = microtime_float ();
// End the timer and place it at the bottom
$ Runtime = number_format (microtime_float ()-$ starttime), 4).'s ';
// Output
Echo 'runtime: '. $ RunTime;
?>
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