2
井子進程可能會因錯誤退出,但pcntl_wifexited總是返回truepcntl_wifexited總是返回true
<?php
//Sample code :
$child_pid = pcntl_fork();
if ($child_pid === 0)
{
//This is child process
$my_var = rand(1,5);
if($my_var == 2)
{
//2 is not allowed
exit(1); //exit with error
}
if($my_var == 4)
{
//4 is unknown
i_crash_now(); //crash
}
echo 'end of child' . "\n";
exit(0); //exit standard
}
else
{
sleep(1); //waiting for child with ninja code (don't do that at home, this was made by professional ninjas)
pcntl_waitpid($child_pid, $status, WNOHANG);
var_dump(pcntl_wstopsig($status)); //in case 2 > 1, in case 4 > 255, else 0
var_dump(pcntl_wifexited($status)); //always true;
}
exit(0);
我可以使用信號來發現錯誤,但我沒有得到與pcntl_wifexited什麼是錯的()。
這是否與WNOHANG
選項有關?
關於忍者代碼的LOL! – 2011-01-20 17:24:31
如果子狀態碼錶示正常退出,則返回TRUE,否則返回FALSE。 – 2011-01-20 18:06:17