How can PHP developers measure the time taken for a script to execute and display it on a webpage?

To measure the time taken for a PHP script to execute, developers can use the microtime() function to get the current Unix timestamp with microseconds before and after the script execution, then calculate the difference to determine the script execution time. This can be displayed on a webpage by echoing the result within HTML tags. 

<?php
$start_time = microtime(true);

// Your PHP script here

$end_time = microtime(true);
$execution_time = ($end_time - $start_time);

echo "Script execution time: " . $execution_time . " seconds";
?>

Keywords

PHP script execution time performance measurement microtime webpage display

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