(PECL apc >= 3.1.1)
apc_inc — 递增一个储存的数字
$key
[, int $step
= 1
[, bool &$success
]] )递增一个储存的数字。
key
该键内的值被增加。
step
步长,或者需要增加的值。
success
可选,用于传递函数成功或失败到该引用变量里。
成功时返回 key
的当前值,
或者在失败时返回 FALSE
Example #1 apc_inc() 范例
<?php
echo "Let's do something with success", PHP_EOL;
apc_store('anumber', 42);
echo apc_fetch('anumber'), PHP_EOL;
echo apc_inc('anumber'), PHP_EOL;
echo apc_inc('anumber', 10), PHP_EOL;
echo apc_inc('anumber', 10, $success), PHP_EOL;
var_dump($success);
echo "Now, let's fail", PHP_EOL, PHP_EOL;
apc_store('astring', 'foo');
$ret = apc_inc('astring', 1, $fail);
var_dump($ret);
var_dump($fail);
?>
以上例程的输出类似于:
42 43 53 63 bool(true) Now, let's fail bool(false) bool(false)
elfi47 (2012-11-02 18:23:53)
if you set a variable via apc_store and set a TTL,
you have to do a apc_get($key) before using apc_inc().
if you try it without apc_get() your entry will never expire because with apc_inc the variable will never expire!