1.2.1452. Yield From Usage

Usage of generator <https://www.php.net/`generator>`_ delegation, with yield from keyword.

In PHP 7, generator <https://www.php.net/`generator>`_ delegation allows you to yield values from another Generator, Traversable object, or array by using the yield from.

Yield from was introduced in PHP 7.1, and is backward incompatible.

<?php

// Yield delegation
function foo() {
    yield from bar();
}

function bar() {
    yield 1;
}

?>

See also Generator Syntax and Understanding PHP Generators.

1.2.1452.1. Specs

Short name	Php/YieldFromUsage
Rulesets	All, Appinfo, CE
Exakat since	0.8.4
PHP Version	With PHP 7.0 and more recent
Severity
Time To Fix
Precision	Very high
Features	yield, yield-from
Available in	Entreprise Edition, Community Edition, Exakat Cloud