How does the initialization overhead of PHP scripts compare to Perl-CGIs?

The initialization overhead of PHP scripts is generally lower than Perl-CGIs due to PHP's built-in opcode caching and preloading mechanisms. To further reduce initialization overhead in PHP scripts, you can utilize opcode caching extensions like OPcache and preloading mechanisms available in PHP 7.4 and later versions.

// Enable OPcache extension
opcache.enable=1

// Preload specific files in PHP script
opcache.preload=/path/to/preload.php