Are there any best practices for accurately measuring CPU usage in PHP?

One best practice for accurately measuring CPU usage in PHP is to use the `getrusage()` function, which returns an array of CPU usage metrics for the current process. By using this function, you can track the amount of user and system CPU time consumed by your PHP script. This can be useful for performance monitoring and optimization purposes. 

$usage = getrusage();
$user_cpu_time = $usage['ru_utime.tv_sec'] + ($usage['ru_utime.tv_usec'] / 1000000);
$system_cpu_time = $usage['ru_stime.tv_sec'] + ($usage['ru_stime.tv_usec'] / 1000000);

echo "User CPU time: $user_cpu_time seconds\n";
echo "System CPU time: $system_cpu_time seconds\n";

Keywords

CPU usage measurement PHP performance monitoring

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