I have two functions whose execution time I would like to compare:
function subject_one() {
$str = preg_match_all( ...[SNIP]... );
// ...[SNIP]...
return $str;
}
function subject_two() {
$reader = new XMLReader;
$writer = new XMLWriter;
// ...[SNIP]...
echo $str;
}
Is it possible to write a function to do this?
For example:
function benchmark_two_functions( $first_function, $second_function ) {
// do stuff
return $length_of_time_to_complete_each_function
}
Most examples I've seen add code to the top and bottom of the script, which I'd like to avoid, if possible.
Try this
function subject_one(){
sleep(1);
}
function subject_two(){
sleep(5);
}
/* Result should be ~4 */
print benchmark_two_functions('subject_one','subject_two');
function getmicrotime() {
list($usec, $sec) = explode(" ",microtime());
return ((float)$usec + (float)$sec);
}
function benchmark_two_functions($first_function, $second_function){
$start = getmicrotime();
$first_function();
$exec_time_first = getmicrotime() - $start;
$start = getmicrotime();
$second_function();
$exec_time_second = getmicrotime() - $start;
return $exec_time_first - $exec_time_second;
}
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With