include "vendor/autoload.php";
/**
* This example shows how to create a connection and then query for a key,
* set data and then retrieve the data.
*/
/**
* Create the redis object and initialise a connection.
*/
$helper = new RedisHelper\RedisHelper();
$helper->connect(true, 'localhost', 6379, '');
$ourKey = "example_key";
/**
* So if the key does not exist, lets store some data with that key.
*/
if ($helper->exists($ourKey) === false) {
$helper->set($ourKey, 'This is our test data');
}
/**
* And now lets check if that key now exists.
*/
if ($helper->exists($ourKey) === true) {
echo $helper->get($ourKey) . "\n";
}
/**
* Re-initialise the helper object and start from fresh to
* absolutely 100% ensure that our data was saved to redis.
*/
$helper = new RedisHelper\RedisHelper();
$helper->connect(true, 'localhost', 6379, '');
echo $helper->get($ourKey) . "\n";
$helper = new RedisHelper\RedisHelper(); $helper->connect(true, 'localhost', 6379, ''); $ourKey = "our_number_key"; $ourNumber = 1; /** * 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
$ourString = "Totally generic string";
$ttl = 300;
// 5 minutes
/**
* Good
*/
if ($helper->exists($ourKey) === false) {
/**
* TTL: Time to live. How long the value should persist in the
* cache before Redis purges it. If no value is passed it defaults
* to the constant value 14400.
*/
$helper->set($ourKey, $ourString, $ttl);
echo "Not set:" . $ourString . "\n";
} else {
echo "Set:" . $helper->get($ourKey) . "\n";
}
/**
* Bad
*
* The reason I am pointing this out is I have seen several
* implementations where people store the key/data pair and
* then retrieve it. You already have the value, by using get()
* you are introducing a second call to Redis unnecessarily.
*
* set() used to return $this, so to prevent this abuse it
* has been removed so method chaining can not be used.
* I.e. $helper->set()->get()
*/
if ($helper->exists($ourKey) === false) {
$helper->set($ourKey, $ourString);
/**
* This example shows the results of doing naughty actions.
*/
include "vendor/autoload.php";
/**
* 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.