PHP Calculation function Execution time method, PHP calculation function Execution _php tutorial

PHP calculates the function execution time method, the PHP computation function executes

This example describes how PHP calculates the execution time of a function. Share to everyone for your reference. Specific as follows:

We can record the start and end time respectively before and after the program, the two time difference is the execution of the program.
Copy the Code code as follows: <?php
$long _str = "This is a test to see how much time MD5 function takes to execute over this string";
Start timing from here
$start = Microtime (true);
function to test
$MD 5 = MD5 ($long _str);
$elapsed = Microtime (True)-$start;
echo "That took $elapsed seconds.\n";
?>

The results of the operation are as follows:

That took 7.1525573730469E-6 seconds.

I hope this article is helpful to everyone's PHP programming.

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