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(PECL apcu >= 4.0.0)
apcu_inc — Increase a stored number
$key
[, int $step = 1
[, bool &$success
]] )Increases a stored number.
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.
Returns the current value of key's value on success,
或者在失败时返回 FALSE
Example #1 apcu_inc() example
<?php
echo "Let's do something with success" , PHP_EOL ;
apcu_store ( 'anumber' , 42 );
echo apcu_fetch ( 'anumber' ), PHP_EOL ;
echo apcu_inc ( 'anumber' ), PHP_EOL ;
echo apcu_inc ( 'anumber' , 10 ), PHP_EOL ;
echo apcu_inc ( 'anumber' , 10 , $success ), PHP_EOL ;
var_dump ( $success );
echo "Now, let's fail" , PHP_EOL , PHP_EOL ;
apcu_store ( 'astring' , 'foo' );
$ret = apcu_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 failbool(false) bool(false)