Explain PHP variable length argument function
PHP Variable Length Argument Function
PHP supports variable length argument function. It means you can pass 0, 1 or n number of arguments in function. To do so, you need to use 3 ellipses (dots) before the argument name.
The 3 dot concept is implemented for variable length argument since PHP 5.6.
Let's see a simple example of PHP variable length argument function.
<?php function add(...$numbers) { $sum = 0; foreach ($numbers as $n) { $sum += $n; } return $sum; } echo add(1, 2, 3, 4); ?>
Output:
10