ftok Convert a pathname and a project identifier to a System V IPC key

ftok

(PHP 4 >= 4.2.0, PHP 5)

ftok — Convert a pathname and a project identifier to a System V IPC key

说明

int ftok ( string $pathname , string $proj )

The function converts the pathname of an existing accessible file and a project identifier into an integer for use with for example shmop_open() and other System V IPC keys.

参数

pathname: Path to an accessible file.
proj: Project identifier. This must be a one character string.

返回值

On success the return value will be the created key value, otherwise -1 is returned.

参见

shmop_open() - Create or open shared memory block
sem_get() - Get a semaphore id

« ftell
» ftp_alloc

PHP教程

PHP简介 PHP基本语法 PHP类型 PHP变量 PHP运算符 PHP控制结构 PHP函数 PHP类与对象 PHP异常处理函数库分类

PHPSemaphore - 函数

shm_remove_var