SyncSharedMemory::read » « SyncSharedMemory::__construct PHP 手册 函数参考 进程控制扩展 Sync SyncSharedMemory SyncSharedMemory::first (PECL sync >= 1.1.0)SyncSharedMemory::first — Check to see if the object is the first instance system-wide of named shared memory 说明 public SyncSharedMemory::first(): bool Retrieves the system-wide first instance status of a SyncSharedMemory object. 参数 此函数没有参数。 返回值 成功时返回 true, 或者在失败时返回 false。 范例 示例 #1 SyncSharedMemory::first() example <?php$mem = new SyncSharedMemory("AppReportName", 1024);if ($mem->first()){ // Do first time initialization work here.}var_dump($mem->first());$mem2 = new SyncSharedMemory("AppReportName", 1024);var_dump($mem2->first());?> 以上例程的输出类似于: bool(true) bool(false) 参见 SyncSharedMemory::write() - Copy data to named shared memory SyncSharedMemory::read() - Copy data from named shared memory add a note User Contributed Notes There are no user contributed notes for this page. 备份地址:http://www.lvesu.com/blog/php/syncsharedmemory.first.php