What is the recommended method for calculating the runtime of a PHP script accurately?

To accurately calculate the runtime of a PHP script, you can use the microtime() function to get the current time in microseconds before and after the script execution, then calculate the difference to determine the runtime. This method provides a more precise measurement compared to using functions like time(). 

$start_time = microtime(true);

// Your PHP script code here

$end_time = microtime(true);
$execution_time = $end_time - $start_time;
echo "Script executed in $execution_time seconds";

Keywords

execution time microtime benchmarking performance monitoring profiling

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