(PECL sync >= 1.1.0)
SyncSharedMemory::size — Returns the size of the named shared memory
Retrieves the shared memory size of a SyncSharedMemory object.
此函数没有参数。
An integer containing the size of the shared memory. This will be the same size that was passed to the constructor.
Example #1 SyncSharedMemory::size() example
<?php
$mem = new SyncSharedMemory("AppReportName", 1024);
var_dump($mem->size());
?>
以上例程的输出类似于：
int(1024)