wincache_ucache_dec()
(PECL wincache >= 1.1.0)
Decrements the value associated with the key
说明
wincache_ucache_dec(string $key[,int $dec_by= 1[,bool &$success]]): mixed
Decrements the value associated with the$keyby 1 or as specified by$dec_by.
参数
- $key
The$keythat was used to store the variable in the cache.$keyis case sensitive.
- $dec_by
The value by which the variable associated with the$keywill get decremented. If the argument is a floating point number it will be truncated to nearest integer. The variable associated with the$keyshould be of typelong, otherwise the function fails and returns
FALSE
.- $success
Will be set to
TRUE
on success andFALSE
on failure.
返回值
Returns the decremented value on success and FALSE
on failure.
范例
Example #1 Using wincache_ucache_dec()
<?php wincache_ucache_set('counter', 1); var_dump(wincache_ucache_dec('counter', 2923, $success)); var_dump($success); ?>
以上例程会输出:
int(2922) bool(true)
参见
wincache_ucache_inc()
Increments the value associated with the keywincache_ucache_cas()
Compares the variable with old value and assigns new value to it