shm_attach — Creates or open a shared memory segment Description 代码语言:javascript 复制 resourceshm_attach(int $key[,int $memsize[,int $perm=0666]]) shm_attach()returns an id that can be used to access the System
if(function_exists("shm_attach")===FALSE){ die("\nYour PHP configuration needs adjustment. See: http://us2.php.net/manual/en/shmop.setup.php. To enable the System V shared memory support compile PHP with the option --enable-sysvshm."); } $this->attach(); //create resources (sh...
$shm_id = shm_attach($key, 1024, 0666); // resource type if ($shm_id === false) { die('Unable to create the shared memory segment' . PHP_EOL); } //设置一个值 shm_put_var($shm_id, $shar_key, 'test'); //删除一个key shm_remove_var($shm_id, $shar_key); //获取一个...
中文手册 pre: « sem_remove next: shm_detach » shm_attach (PHP 4, PHP 5, PHP 7) shm_attach— Creates or open a shared memory segment 说明 shm_attach ( int $key [, int $memsize [, int $perm = 0666 ]] ) : resource shm_attach() returns an id that can be used to access...
//当shm_attach第一次被调用时,php向共享内存写入一个header $shmHeaderSize = (PHP_INT_SIZE * 4) + 8; //当shm_put_var调用时,php会在序列化后的数据前面,加一个header $shmVarSize = (((strlen(serialize($foo))+ (4 * PHP_INT_SIZE)) /4 ) * 4 ) + 4; ...
共享内存是一种多进程间共享数据的方式,进程可以直接访问共享内存,从而实现数据的共享。在PHP中,可以使用shm系列函数来创建和操作共享内存。 1. 创建共享内存 使用shm_attach函数可以创建一个共享内存段。 “` $key = ftok(__FILE__, ‘b’); $sharedMemory = shm_attach($key, 1024, 0666); ...
–`shm_attach()`:将当前进程连接到一个共享内存区域。 –`shm_put_var()`:将数据存储到共享内存区域。 –`shm_get_var()`:从共享内存区域获取数据。 –`shm_remove()`:将共享内存区域从系统中删除。 ### 操作流程: 1. 创建一个共享内存区域; ...
$id=shm_attach($key); if ($id===false) { die('Unable to create the shared memory segment'); } // Cast to integer, since prior to PHP 5.3.0 the resource id // is returned which can be exposed when casting a resource // to an integer ...
shm_attach ( int $key [, int $memsize [, int $perm = 0666 ]] ) : resource shm_attach() returns an id that can be used to access the System V shared memory with the given key, the first call creates the shared memory segment with memsize and the optional perm-bits perm. A sec...
shm_attach()现在将返回SysvSharedMemory对象而不是resource。 xml_parser_create()和xml_parser_create_ns()现在将返回XMLParser对象而不是resource。xml_parser_free()函数不再有作用,相反,如果不再引用,XmlParser实例将自动销毁。 XMLWriter函数现在分别接受和返回XMLWriter对象而不是resource。