We often need to do when some execution time of the program execution efficiency judgment. Marble platform test procedures
Ideas to achieve the following:
<?php // record start time // When the entire record junction // start time minus (-) end time to get the program running time ?>
But we should not forget, program speed too fast. Only the moment is coming 0.00000 seconds. This time we have to record that a special function of the letter:
mixed microtime ([ bool $get_as_float ] )
microtime, and () function, to return current Unix timestamp microseconds.
Parameters:
If you pass true, it will return a floating-point type of time, so easy to participate in operations.
Let's simulate an example of a detection function execution time, a function test of the efficiency of speed:
<?php
//Starting time
$time_start = microtime(true);
// Loop ten thousand times
for($i = 0 ; $i < 10000 ; $i++){
// you can spend, mktime () generates a time yesterday
// then strtotime () generates a time yesterday
Comparative // two functions efficiently recognized
}
// knot of all time
$time_end = microtime(true);
// obtained by subtracting the running time
$time = $time_end - $time_start;
echo "This script execution time was $ time seconds \ n";
?>
Last output is the execution time of our actual function. You can compare more than a few times to see the final result.
Whose time is short, in the actual work, which often function you can use.