In this article, you will learn how to create a generator function in PHP. The yield from keyword is used to create a generator function. Generator functions act as iterators which can be looped through with a foreach loop.
examples of the YIELD FROM function
Example 1. In this example, we use yield from to create a generator function.
<?php
function countTo4() {
yield from [1, 2, 3];
yield 4;
}
foreach(countTo4() as $number) {
echo $number;
echo "<br>";
}
?>
