/**
* Decrement the number stored at key by one.
*
* @param string $key
*
* @return int the new value
* @link http://redis.io/commands/decr
* @example
* <pre>
* $redis->decr('key1'); // key1 didn't exists, set to 0 before the increment and now has the value -1
* $redis->decr('key1'); // -2
* $redis->decr('key1'); // -3
* </pre>
*/
public function decr($key)
{
try {
return $this->client->decr($key);
} catch (Exception $e) {
return $this->handleException($e, __FUNCTION__, func_get_args());
}
}
/**
* Test decrementing a key
*/
public function testDecr()
{
$this->redis->del('testDecr');
$this->assertEquals(-1, $this->redis->decr('testDecr'));
$this->assertEquals(-1, $this->redis->get('testDecr'));
$this->assertEquals(-2, $this->redis->decr('testDecr'));
$this->assertEquals(-2, $this->redis->get('testDecr'));
$this->assertEquals(-3, $this->redis->decr('testDecr'));
$this->assertEquals(-3, $this->redis->get('testDecr'));
$this->assertInternalType('int', $this->redis->decr('testDecr'));
}
/**
* {@inheritdoc}
*/
public function decr($key)
{
unset($this->cache[$key]);
return $this->redis->decr($key);
}
