(PHP 4 >= 4.1.0, PHP 5)pcntl_fork -- Forks the currently running process

Description

int pcntl_fork (void)

The pcntl_fork() function creates a child

process that differs from the parent process only in its PID and

PPID. Please see your system's fork(2) man page for specific details as to

how fork works on your system.

On success, the PID of the child process is returned in the

parent's thread of execution, and a 0 is returned in the child's

thread of execution. On failure, a -1 will be returned in the

parent's context, no child process will be created, and a PHP

error is raised.

Пример 1. pcntl_fork() example <?php $pid = pcntl_fork(); if ($pid == -1){ die('could not fork'); } else if ($pid){ // we are the parent pcntl_wait($status); //Protect against Zombie children } else { // we are the child } ?>

See also pcntl_waitpid() and

pcntl_signal().

Пред.

Начало

След.

pcntl_exec

Уровень выше

pcntl_getpriority