What to do if php pcntl fork fails

Solution to php pcntl fork failure: 1. Check whether php.ini has loaded the pcntl extension; 2. Check whether composer has installed ext-pcntl; 3. Use pcntl_fork in CGI mode or command line .

The operating environment of this tutorial: Windows 10 system, PHP version 8.1, DELL G3 computer

What should I do if php pcntl fork fails?

pcntl_fork() returns fatal error: Calling undefined function pcntl_fork()

I want to use it on a project running with mamp integrated environment on mac to the pcntl_fork() function, but the strange thing is that I checked that php.ini has loaded the pcntl extension, and composer has also installed ext-pcntl, but when I call it, it will report undefined function pcntl_fork(), and I have searched in many directions but can't solve it. , one point to note is that PCNTL is not available on Windows platforms.

$pid = pcntl_fork();
if($pid == -1){
    file_put_contents('testlog.log',"\r\nFork Test",FILE_APPEND);
    return 1; //error
}
else if($pid){
    return 0; //success
}
else{   
    file_put_contents($log, 'Running...', FILE_APPEND);
}

Later found the answer on stackoverflow:

The function 'pcntl_fork' module (e.g. XAMPP) cannot be used when using Apache as php server. You can only use pcntl_fork in CGI mode or the command line.

so. . . Changing the server to nginx can solve the problem.

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