Delay Function PHP | 易学教程

问题

please tell me how to make a delay function to delay functions!

DelayCommand(functionToDelay, Delaytime);

..? in php 5.3+

thanks for any help

回答1:

function delayCommand($callback, $delayTime) {
    sleep($delayTime);
    $callback();
}

回答2:

This should work, consider switching out sleep() to usleep().

function DelayCommand($functionToDelay, $delayTimeInSeconds) {
    sleep($delayTimeInSeconds);
    $functionToDelay();
}

DelayCommand(function() { echo "yes"; }, 5);

(Code is untested)

回答3:

function delayCommay($function, $nano){
    usleep($nano);
    $function();
}

Will do the trick however it is synchronous. So if you make a call to delayCommand it will delay your whole script until it has run the command.

回答4:

If you want it done asynchronously, see my answer here: Scheduling php scripts

For your information, here's a list of related functions:

sleep() / usleep() - Sleep for an amount of (micro)seconds.
time_sleep_until() - Sleep until a timestamp.
time_nanosleep() - Sleep for an amount of seconds and nanoseconds.

回答5:

Here is what I have for delaying a function in MS, Sleep and Usleep pause the execution of the whole script, this seems to work pretty well

    public function DelayTime($ms){ 
         $now = microtime();
         $finishtime = ($now + $ms);

         while($now < $finishtime){ 
             $now = time();
             if($now >= $finishtime){ break; }
         }
         return true;
     }

来源：https://stackoverflow.com/questions/6803756/delay-function-php

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php

function

delay