/** * Start off by setting the key * * Note that if we do not check for its exist()ance then we will * overwrite the value. */ $helper->set($ourKey, $ourNumber); /** * Increase by 1 */ $helper->add($ourKey); echo "The number is now:" . $helper->get($ourKey) . "\n"; // 2 /** * Increase by 4 */ $helper->add($ourKey, 4); echo "The number is now:" . $helper->get($ourKey) . "\n"; // 6 /** * Decrease by 1 */ $helper->subtract($ourKey); echo "The number is now:" . $helper->get($ourKey) . "\n"; // 6 /** * Decrease by 3 */ $helper->subtract($ourKey, 3); echo "The number is now:" . $helper->get($ourKey) . "\n"; // 6
<?php
/**
* This example shows a series of number additions and subtractions pulled from
* an array of up/down scores.
*/
include "vendor/autoload.php";
/**
* Create the redis object and initialise a connection.
*/
$helper = new RedisHelper\RedisHelper();
$helper->connect(true, 'localhost', 6379, '');
$ourKey = "our_vote_site_key";
$ourNumber = 100;
$helper->set($ourKey, $ourNumber);
$votes = [['type' => 'down', 'value' => 1], ['type' => 'up', 'value' => 1], ['type' => 'up', 'value' => 3], ['type' => 'down', 'value' => 2]];
foreach ($votes as $vote) {
echo "Rolling count: ";
if ($vote['type'] == 'down') {
echo $helper->subtract($ourKey, $vote['value'])->get($ourKey) . "\n";
} else {
echo $helper->add($ourKey, $vote['value'])->get($ourKey) . "\n";
}
}
/**
* Create the redis object and initialise a connection.
*/
$helper = new RedisHelper\RedisHelper();
$helper->connect(true, 'localhost', 6379, '');
/**
* Requesting a key that does not exist.
*
* Result: If you use get() to request an unset key, it simply returns false.
*/
echo "The value is: " . ($helper->get("an_unset_key") !== false) . "\n";
/**
* Attempting to increase a string.
*/
$key = "set_string_for_add";
$helper->set($key, "Test string");
echo "The value is:" . $helper->add($key, 5)->get($key) . "\n";
exit;
/**
* Increasing a number that does not exist.
*
* Result: Throws an exception.
*/
$helper->add("unset_number_for_add", 5);
/**
* Decreasing a number that does not exist.
*
* Result: Throws an exception.
*/
$helper->subtract("unset_number_for_subtract", 5);