pcntl_waitpid
$pid = pcntl_fork();
if ($pid == -1) {
die("could not fork");
} else if ($pid) {
// we are the parent
$myId = pcntl_waitpid(-1, $status, 0);
$children_ret = pcntl_wexitstatus($status);
echo "return code " . $children_ret;
return 0;
} else {
// we are the child
return 2;
}
output: return code 0
you should use exit not return
like this
$pid = pcntl_fork();
if ($pid == -1) {
die("could not fork");
} else if ($pid) {
// we are the parent
$myId = pcntl_waitpid(-1, $status, 0);
$children_ret = pcntl_wexitstatus($status);
echo "return code " . $children_ret;
return 0;
} else {
// we are the child
exit(2);
}
output: return code 2
pcntl_wexitstatus
(PHP 4 >= 4.1.0, PHP 5)
pcntl_wexitstatus — Returns the return code of a terminated child
Description
int pcntl_wexitstatus
( int
$status
)
Returns the return code of a terminated child. This function is
only useful if pcntl_wifexited() returned
TRUE.
Parameters
-
status -
The
statusparameter is the status parameter supplied to a successful call to pcntl_waitpid().
Return Values
Returns the return code, as an integer.
See Also
- pcntl_waitpid() - Waits on or returns the status of a forked child
- pcntl_wifexited() - Checks if status code represents a normal exit
add a note
User Contributed Notes
pcntl_wexitstatus
imanecr at gmail dot com
30-Jun-2011 02:34