Increase a stored number

说明

int apc_inc ( string $key [, int $step = 1 [, bool &$success ]] )

Increases a stored number.

参数

key: The key of the value being increased.
step: The step, or value to increase.
success: Optionally pass the success or fail boolean value to this referenced variable.

返回值

Returns the current value of key's value on success, 或者在失败时返回 FALSE

范例

Example #1 apc_inc() example


<?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)

参见

apc_dec() - Decrease a stored number