We pass a restart count attribute as indicator that the process was restarted.

<?php
    echo ++$argv[1];     // count every restart
    $_ = $_SERVER['_'];  // or full path to php binary

    echo "
======== start =========
";
    // do a lot of stuff
    $cnt = 0;
    while( $cnt++ < 10000000 ){}
    echo "
========== end =========
";

    // restart myself
    pcntl_exec($_, $argv);

无论是否正常终止?

是的，如果终止，我可以重新启动！

<?php
    echo ++$argv[1];    
    $_ = $_SERVER['_']; 

    register_shutdown_function(function () {
        global $_, $argv; // note we need to reference globals inside a function
        // restart myself
        pcntl_exec($_, $argv);
    });

    echo "
======== start =========
";
    // do a lot of stuff
    $cnt = 0;
    while( $cnt++ < 10000000 ){}
    echo "
========== end =========
";

    die; // exited properly
    // we can't reach here 
    pcntl_exec($_, $argv);

还是因为错误而终止?

同上！

<?php
    echo ++$argv[1];    
    $_ = $_SERVER['_']; 

    register_shutdown_function(function () {
        global $_, $argv; 
        // restart myself
        pcntl_exec($_, $argv);
    });

    echo "
======== start =========
";
    // do a lot of stuff
    $cnt = 0;
    while( $cnt++ < 10000000 ){}
    echo "
===== what if? =========
";
    require 'OOPS! I dont exist.'; // FATAL Error:

    // we can't reach here
    echo "
========== end =========
";        
    die; // exited properly
    // we can't reach here 
    pcntl_exec($_, $argv);

但你知道我想要的不止这些吗?

当然可以！我可以在杀死，集线器甚至 Ctrl-C 时重新启动！

<?php
    echo ++$argv[1];     
    $_ = $_SERVER['_'];  
    $restartMyself = function () {
        global $_, $argv; 
        pcntl_exec($_, $argv);
    };
    register_shutdown_function($restartMyself);
    pcntl_signal(SIGTERM, $restartMyself); // kill
    pcntl_signal(SIGHUP,  $restartMyself); // kill -s HUP or kill -1
    pcntl_signal(SIGINT,  $restartMyself); // Ctrl-C

    echo "
======== start =========
";
    // do a lot of stuff
    $cnt = 0;
    while( $cnt++ < 10000000 ){}
    echo "
===== what if? =========
";
    require 'OOPS! I dont exist.'; // FATAL Error:

    // we can't reach here
    echo "
========== end =========
";        
    die; // exited properly
    // we can't reach here 
    pcntl_exec($_, $argv);

我现在如何终止它?

如果您通过按住 Ctrl-C 来淹没进程，您可能会在关机的某个地方捕获它.

<?php
    echo ++$argv[1];     
    $_ = $_SERVER['_'];  
    $restartMyself = function () {
        global $_, $argv; 
        pcntl_exec($_, $argv);
    };
    register_shutdown_function($restartMyself);
    pcntl_signal(SIGTERM, $restartMyself);   
    pcntl_signal(SIGHUP,  $restartMyself);   
    pcntl_signal(SIGINT,  $restartMyself);   
    set_error_handler($restartMyself , E_ALL); // Catch all errors

    echo "
======== start =========
";
    // do a lot of stuff
    $cnt = 0;
    while( $cnt++ < 10000000 ){}

    echo $CAREFUL_NOW; // NOTICE: will also be caught

    // we would normally still go here
    echo "
===== what if? =========
";
    require 'OOPS! I dont exist.'; // FATAL Error:

    // we can't reach here
    echo "
========== end =========
";        
    die; // exited properly
    // we can't reach here 
    pcntl_exec($_, $argv);