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https://github.com/predis/predis.git
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Daniele Alessandri
57 lines
1.8 KiB
PHP
57 lines
1.8 KiB
PHP
<?php
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/*
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* This file is part of the Predis package.
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*
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* (c) Daniele Alessandri <suppakilla@gmail.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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require 'SharedConfigurations.php';
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// Operations such as LRANGE, ZRANGE and others can potentially generate replies
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// containing a huge number of items. In some corner cases, such replies might
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// end up exhausting the maximum allowed memory allocated for a PHP process.
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// Multibulk iterators can be handy because they allow you to stream multibulk
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// replies using plain old PHP iterators, making it possible to iterate them with
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// a classic `foreach` loop and avoiding to consume an excessive amount of memory.
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//
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// PS: please note that multibulk iterators are supported only by the standard
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// connection backend class (Predis\Connection\StreamConnection) and not the
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// phpiredis-based one (Predis\Connection\PhpiredisConnection).
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// Create a client and force the connection to use iterable multibulk responses.
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$client = new Predis\Client($single_server + array('iterable_multibulk' => true));
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// Prepare an hash with some fields and their respective values.
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$client->hmset('metavars', array('foo' => 'bar', 'hoge' => 'piyo', 'lol' => 'wut'));
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// By default multibulk iterators iterate over the reply as a list of items...
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foreach ($client->hgetall('metavars') as $index => $item) {
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echo "[$index] $item\n";
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}
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/* OUTPUT:
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[0] foo
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[1] bar
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[2] hoge
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[3] piyo
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[4] lol
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[5] wut
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*/
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// ... but certain multibulk replies are better represented as lists of tuples.
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foreach ($client->hgetall('metavars')->asTuple() as $index => $kv) {
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list($key, $value) = $kv;
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echo "[$index] $key => $value\n";
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}
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/* OUTPUT:
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[0] foo => bar
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[1] hoge => piyo
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[2] lol => wut
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*/
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