Generator::send

(PHP 5 >= 5.5.0, PHP 7)

Generator::send — Send a value to the generator

Descrierea

public Generator::send ( mixed $value ) : mixed

Sends the given value to the generator as the result of the current yield expression and resumes execution of the generator.

If the generator is not at a yield expression when this method is called, it will first be let to advance to the first yield expression before sending the value. As such it is not necessary to "prime" PHP generators with a Generator::next() call (like it is done in Python).

Parametri

value: Value to send into the generator. This value will be the return value of the yield expression the generator is currently at.

Valorile întoarse

Returns the yielded value.

Exemple

Example #1 Using Generator::send() to inject values


<?php
function printer() {
    echo "I'm printer!".PHP_EOL;
    while (true) {
        $string = yield;
        echo $string.PHP_EOL;
    }
}

$printer = printer();
$printer->send('Hello world!');
$printer->send('Bye world!');
?>

Exemplul de mai sus va afișa:

I'm printer!
Hello world!
Bye world!