Calculate execution time of php command execution (popen() function)

Question

I want to calculate the execution time of popen function in PHP. The function is not provide execution time as default.

My pseudo code like below;

    $handle        = popen($cmd, 'r');
    while (!feof($handle)) {
        $buffer = fgets($handle, FREAD_BUFFER_SIZE);
        $out .= $buffer . " ";
    }

I found a solution in here but I am not sure it's the right way.

Answer 1

Consider using the time() or microtime(true) function.

$currentTimeinSeconds = microtime(true);

This stores the seconds passed from the instance it was declared to 1/01/1970. Make two variables (ex. T1 and T2) and simply subtract the second to the first to get the execution time.

$t1= microtime(true)
[function]
$t2= microtime(true)
ex_time=$t2-$t1