Are there any recommended debugging tools or classes for monitoring script execution time in PHP?

When developing PHP scripts, it is important to monitor the execution time of your code to identify any performance bottlenecks. One recommended debugging tool for monitoring script execution time in PHP is Xdebug, which provides profiling capabilities to track the time spent on each function call. Another option is to use the built-in microtime() function to manually calculate the execution time of specific code blocks.

// Using Xdebug for profiling
xdebug_start_profiling();

// Code block to monitor
// ...

xdebug_stop_profiling();

// Using microtime() for manual calculation
$start_time = microtime(true);

// Code block to monitor
// ...

$end_time = microtime(true);
$execution_time = $end_time - $start_time;
echo "Execution time: " . $execution_time . " seconds";