PHP Generators and Yield

Generate large sequences on the fly with minimal memory footprint.

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Generators allow you to write code that uses foreach to iterate over a set of data without needing to build an array in memory, preventing out-of-memory errors on massive datasets.

Key Takeaways: PHP Generators and Yield

Mastering PHP Generators and Yield helps you write clean and reliable PHP code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.

PHP Generators and Yield Code Example

PHP

function getFibonacci($limit) {
    $a = 0; $b = 1;
    for ($i = 0; $i < $limit; $i++) {
        yield $a;
        [$a, $b] = [$b, $a + $b];
    }
}

foreach (getFibonacci(6) as $num) {
    echo $num . " ";
}

Output

0 1 1 2 3 5

Run this example on your own computer. The "Get Started" lesson shows how to set it up.

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PHP Generators and Yield

💡 Key Takeaways: PHP Generators and Yield

PHP Generators and Yield Code Example

Key Takeaways: PHP Generators and Yield