WordPress at a glance
function is not described

getid3_lib::safe_inc() public WP 1.0

{} It's a method of the class: getid3_lib{}

No Hooks.

Return

true|false.

Usage

$result = getid3_lib::safe_inc( $variable, $increment );
$variable *(int null) (required) (passed by reference — &)*
$increment(int)
-

Code of getid3_lib::safe_inc() WP 5.7.2

<?php
public static function safe_inc(&$variable, $increment=1) {
	if (isset($variable)) {
		$variable += $increment;
	} else {
		$variable = $increment;
	}
	return true;
}