Php pcntl_wifexited始终返回true
子进程可能会出错退出,但pcntl_wifexited始终返回truePhp pcntl_wifexited始终返回true,php,multiprocessing,pcntl,Php,Multiprocessing,Pcntl,子进程可能会出错退出,但pcntl_wifexited始终返回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 wi
<?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($status)); //always true;
}
exit(0);
我想象pcntl\U waitpid的行为类似于正常的waitpid调用
如果没有进程终止,WNOHANG强制waitpid返回0[这类似于零超时]
因此,退出代码看起来是正常的 我想象pcntl_waitpid的行为与普通waitpid调用类似
如果没有进程终止,WNOHANG强制waitpid返回0[这类似于零超时]
因此,退出代码看起来是正常的 如果子状态代码表示正常退出,则返回TRUE,否则返回FALSE。如果子状态代码表示正常退出,则返回TRUE,否则返回FALSE。我认为这是正确的。所以对于WNOHANG
我应该使用pcntl\u wstopsig($status)
。我想这是对的。因此,对于WNOHANG
我应该使用pcntl\u wstopsig($status)
。