Snake Case

Snake case, also written snake_case is a way of writing names without spaces, where:

• all the letters are set to lower case

• each word is separated from the other by an underscore

The underscore letters create humps like a camel’s back: this is the origin of the name.

Snake case is often used for PHP native functions.

<?php

function to_lower(string $string): int {
    // PHP native function
    return mb_strtolower($string);
}

?>

Documentation

See also stringcase website.

Related : Pascal Case, Camel Case, Constant Case, Underscore