pcntl_alarm

 int pcntl_alarm ( int $seconds ) 

説明

Creates a timer that will send a SIGALRM signal to the process after the given number of seconds. Any call to pcntl_alarm() will cancel any previously set alarm.

戻り値

Returns the time in seconds that any previously scheduled alarm had remaining before it was to be delivered, or 0 if there was no previously scheduled alarm.