A function used to calculate the execution time of a program.

Function used to calculate the execution time of a program. functiongetmicrotime () is a function used to calculate the execution time of a program.

1. Function getmicrotime (){
2. List ($ usec, $ sec) = explode ("", microtime ());
3. Return (float) $ usec (float) $ sec );
4. }
5.  
6. $ Time_start = getmicrotime (); // start the timer and place it in the program header.
7.  
8. For ($ I = 0; I I <1000; $ I ){
9. // Do nothing, 1000 times
10. }
11.  
12. $ Time_end = getmicrotime (); // end time, placed at the end
13. $ Time = $ time_end-$ time_start;
14.  
15. Echo "Did nothing in $ time seconds ";