predisHow do I use hmset in PHP with Redis?

HMSET is a Redis command used to set multiple fields and values in a hash stored at a key. It can be used in PHP with the Predis library.

Example code and output:

<?php

require 'predis/autoload.php';
Predis\Autoloader::register();

$client = new Predis\Client();

$client->hmset('hashkey', [
    'field1' => 'value1',
    'field2' => 'value2',
    'field3' => 'value3',
]);

echo $client->hget('hashkey', 'field1'); // Output: value1

The code above uses the Predis library to connect to Redis and then uses the hmset command to set multiple fields and values in a hash stored at a key. The hget command is then used to get the value of one of the fields.

Code explanation

• require 'predis/autoload.php'; - Loads the Predis library.
• Predis\Autoloader::register(); - Registers the Predis autoloader.
• $client = new Predis\Client(); - Creates a new Predis client.
• $client->hmset('hashkey', [ - Uses the hmset command to set multiple fields and values in a hash stored at a key.
• 'field1' => 'value1', - Sets the field1 field to the value1 value.
• 'field2' => 'value2', - Sets the field2 field to the value2 value.
• 'field3' => 'value3', - Sets the field3 field to the value3 value.
• ]); - Closes the array of fields and values.
• echo $client->hget('hashkey', 'field1'); - Uses the hget command to get the value of the field1 field.

Helpful links

• Predis library: https://github.com/nrk/predis
• Redis HMSET command: https://redis.io/commands/hmset
• Redis HGET command: https://redis.io/commands/hget

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