What resources or documentation should beginners refer to in order to better understand PHP functions and commands used in code snippets?

Beginners should refer to the official PHP documentation (php.net) for detailed explanations of PHP functions and commands. Additionally, online tutorials, forums, and community websites like Stack Overflow can provide helpful insights and examples. It's also beneficial to practice writing and testing code snippets to better understand how functions and commands work in PHP.

// Example code snippet using the PHP function "strlen" to get the length of a string
$string = "Hello, World!";
$length = strlen($string);
echo "The length of the string is: " . $length;