//作用：
//解釋器每執(zhí)行N條可計時的低級語句就會發(fā)生的時間 declare(directive=N) Tick(時鐘周期)
//1.每執(zhí)行一條語句就執(zhí)行一次register_tisk_function()注冊的函數(shù)
declare(ticks=1);
$time_start = time();
echo "hello";
function check_timeout(){
    global $time_start;
    $timeout=5;
    if (time() - $time_start > $timeout){
        exit("超時{$timeout}秒\n");
    }
}
register_tick_function('check_timeout');
$i=0;
while (1){
//    echo $i++;
    $num =1;
}
//2.每執(zhí)行一次低級語句會檢查一次該進程是否有未處理過的信號
pcntl_signal(SIGINT,function (){
    exit("Get signal SIGINT and exit\n");
});
echo "Ctrl+C or run cmd:kill -SIGINT".posix_getpid()."\n";
while (1){
//    echo "hello world";
    $num = 1;
}

declare(encoding='cp936');  //必須在文件代碼第一行

declare(strict_types=1);

function tick_handler ()		
{			
echo  "tick_handler() called<br>" ;		
}		 
function  tick_handler1 ()		
{			
echo  "tick_handler1() called<br>" ;		
}
 register_tick_function ( 'tick_handler' );		
 register_tick_function ( 'tick_handler1' );
declare( ticks = 1 )
{			 
$a  =  1 ;
			
if ( $a  >  0 ) 
{				
 $a  +=  2 ;				
print( $a );			
}		
}		
exit;