Originally Posted by digital-ether

Take a look at:
http://pleac.sourceforge.net/pleac_p...gementetc.html
http://www.php.net/proc_open
http://www.php.net/socket_create_pair
http://www.php.net/sem

Originally Posted by hopalongcassidy

Thanks to digital-ether, I found this piece of code:

Help with Code Tags

PHP Syntax (Toggle Plain Text)

// PHP supports fork/exec/wait but not pipe. However, it does
// support socketpair, which can do everything pipes can as well
// as bidirectional communication. The original recipes have been
// modified here to use socketpair only.
 
// -----------------------------
 
// pipe1 - use socketpair and fork so parent can send to child
$sockets = array();
if (!socket_create_pair(AF_UNIX, SOCK_STREAM, 0, $sockets)) {
    die(socket_strerror(socket_last_error()));
}
list($reader, $writer) = $sockets;
 
$pid = pcntl_fork();
if ($pid == -1) {
    die('cannot fork');
} elseif ($pid) {
    socket_close($reader);
    $line = sprintf("Parent Pid %d is sending this\n", getmypid());
    if (!socket_write($writer, $line, strlen($line))) {
        socket_close($writer);
        die(socket_strerror(socket_last_error()));
    }
    socket_close($writer);
    pcntl_waitpid($pid, $status);
} else {
    socket_close($writer);
    $line = socket_read($reader, 1024, PHP_NORMAL_READ);
    printf("Child Pid %d just read this: `%s'\n", getmypid(), rtrim($line));
    socket_close($reader);  // this will happen anyway
    exit(0);
}
 
This is so simple, a child could do it. To communicate in both directions, you can simply not close the pipe that sends data from the child to the parent until the child is finished (after the pcntl_waitpid).

// PHP supports fork/exec/wait but not pipe. However, it does // support socketpair, which can do everything pipes can as well // as bidirectional communication. The original recipes have been // modified here to use socketpair only. // ----------------------------- // pipe1 - use socketpair and fork so parent can send to child $sockets = array(); if (!socket_create_pair(AF_UNIX, SOCK_STREAM, 0, $sockets)) { die(socket_strerror(socket_last_error())); } list($reader, $writer) = $sockets; $pid = pcntl_fork(); if ($pid == -1) { die('cannot fork'); } elseif ($pid) { socket_close($reader); $line = sprintf("Parent Pid %d is sending this\n", getmypid()); if (!socket_write($writer, $line, strlen($line))) { socket_close($writer); die(socket_strerror(socket_last_error())); } socket_close($writer); pcntl_waitpid($pid, $status); } else { socket_close($writer); $line = socket_read($reader, 1024, PHP_NORMAL_READ); printf("Child Pid %d just read this: `%s'\n", getmypid(), rtrim($line)); socket_close($reader); // this will happen anyway exit(0); } This is so simple, a child could do it. To communicate in both directions, you can simply not close the pipe that sends data from the child to the parent until the child is finished (after the pcntl_waitpid).

Thanks again, digital-ether. By the way, how do I mark this thread as solved?

Hoppy

Originally Posted by hopalongcassidy

At the bottom of this thread are two buttons; one says "REPLY W/ QUOTE" and the other says "MULTIQUOTE".

Hoppy