int Memcache::decrement ( string key [, int value] )
Memcache::decrement() decrements value of the
item by value. Similarly to
Memcache::increment(), current value of the item is
being converted to numerical and after that value
is substracted.
Note:
New item's value will not be less than zero.
Note:
Do not use Memcache::decrement() with item, which was
stored compressed, because consequent call to
Memcache::get() will fail.
Memcache::decrement()does not
create an item if it didn't exist.
Also you can use memcache_decrement() function.
Parameters
key
Key of the item do decrement.
value
Decrement the item by value. Optional and defaults to 1.
Return Values
Returns item's new value on success or FALSE on failure.
Examples
Example 1. Memcache::decrement() example
<?php
/* procedural API */ $memcache_obj = memcache_connect('memcache_host', 11211); /* decrement item by 2 */ $new_value = memcache_decrement($memcache_obj, 'test_item', 2);
/* OO API */ $memcache_obj = new Memcache; $memcache_obj->connect('memcache_host', 11211); /* decrement item by 3 */ $new_value = $memcache_obj->decrement('test_item', 3); ?>
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