decrement() public method

Note that, as per the Memcached specification: "If the item's value is not numeric, it is treated as if the value were 0. If the operation would decrease the value below 0, the new value will be 0."
See link: http://php.net/manual/memcached.decrement.php
public decrement ( string $key, integer $offset = 1 ) : integer | boolean
$key string Key of numeric cache item to decrement.
$offset integer Offset to decrement - defaults to `1`.
return integer | boolean The item's new value on successful decrement, else `false`.
Memcache Class Documentation
Exemplo n.º 1
0
 public function testDecrementWithScope()
 {
     $adapter = new Memcache(array('scope' => 'primary'));
     $this->_conn->set('primary:key1', 1, 60);
     $this->_conn->set('key1', 1, 60);
     $adapter->decrement('key1');
     $expected = 1;
     $result = $this->_conn->get('key1');
     $this->assertEqual($expected, $result);
     $expected = 0;
     $result = $this->_conn->get('primary:key1');
     $this->assertEqual($expected, $result);
 }