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zookeeper_dispatch

PHP function Edit on GitHub ✎

(PECL zookeeper >= 0.4.0)

Calls callbacks for pending operations

Description

zookeeper_dispatch(): void

The zookeeper_dispatch() function calls the callbacks passed by operations like Zookeeper::get or Zookeeper::exists.

Caution

Since version 0.4.0, this function must be called manually to achieve asynchronous operations. If you want that to be done automatically, you also can declare ticks at the beginning of your program.

After PHP 7.1, you can ignore this function. This extension uses EG(vm_interrupt) to implement async dispatch.

Parameters Parameters

Return Values

Void

Errors/Exceptions

This method emits PHP warning when callback could not be invoked.

Examples

zookeeper_dispatch example #1

Dispatch callbacks manually.

php

<?php
$client = new Zookeeper();
$client->connect('localhost:2181');
$client->get('/zookeeper', function() {
    echo "Callback was called".PHP_EOL;
});
while(true) {
    sleep(1);
    zookeeper_dispatch();
}
?>

zookeeper_dispatch example #2

Declare ticks.

php

<?php
declare(ticks=1);

$client = new Zookeeper();
$client->connect('localhost:2181');
$client->get('/zookeeper', function() {
    echo "Callback was called".PHP_EOL;
});
while(true) {
    sleep(1);
}
?>