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PHP pcntl_alarm

PHP original manual for pcntl_alarm [ show | php.net ]

pcntl_alarm

(PHP 4 >= 4.3.0, PHP 5, PHP 7)

pcntl_alarm — Set an alarm clock for delivery of a signal

Description

int pcntl_alarm ( int $seconds )

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.

Parameters

seconds

The number of seconds to wait. If seconds is zero, no new alarm is created.

Return Values

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.