程式碼如下：

echo "<pre>";
//可以用於程式程式碼測試,下面的程式實現了超時退出的功能
$start_time = time();
$singal = false;              //使用全域性變數跳出死迴圈
function check_timeout(){
    global $start_time;
    global $singal;
    $timeout = 5;
    if(time()-$start_time>$timeout){
        $singal = true;
    }
}
register_tick_function(
 
'check_timeout');
declare(ticks = 5){
    $num = 0;
    while (1) {
        $a = 0;
        $num = ++$num;
        if($singal == true){
            //break;
            goto signal;           //使用goto跳轉到指定的位置，也可以使用break中斷迴圈跳出
        }
    }
}
signal:;


//測試declare執行的程式碼塊，作用範圍
$tmp = 0;
function timer() {
    
 
global $tmp;
    echo $tmp.'<br>';
}
//註冊tick方法
register_tick_function("timer");
//設定每執行幾條語句執行已註冊的方法這裡設定了3條/每次
declare(ticks=2){
    echo "<pre>";
    $tmp += 1;
    $tmp += 1;
    $tmp += 1;
    $tmp += 1;
    $tmp += 1;
    $tmp += 1;
    $tmp += 1;
    $tmp += 1;
    $tmp += 1;
    $tmp += 
 
1;
}



//測試ticks是否能使用常量，經過測試ticks的值必須是一個數字
echo "<pre>";
define('LINES',2);
$i = 0;
function test(){
    global  $i;
    echo "<br>exec lines:".(LINES * $i);
    $i++;
}
register_tick_function('test');
declare(ticks=2){
    function getInfo(){
        $sum = 0;
        for($j = 0; $j<100;$j++){
            $sum = $sum + $j;
        }
        return $sum;
    }
    echo "<br>".getInfo();
}

執行結果：

0
2
4
6
8
10

10

exec lines:010

exec lines:210

exec lines:410

exec lines:610

exec lines:810

exec lines:1010

exec lines:1210

exec lines:1410

exec lines:1610

exec lines:1810

exec lines:2010

exec lines:2210

exec lines:2410

exec lines:2610

exec lines:2810

exec lines:3010

exec lines:3210

exec lines:3410

exec lines:3610

exec lines:3810

exec lines:4010

exec lines:4210

exec lines:4410

exec lines:4610

exec lines:4810

exec lines:5010

exec lines:5210

exec lines:5410

exec lines:5610

exec lines:5810

exec lines:6010

exec lines:6210

exec lines:6410

exec lines:6610

exec lines:6810

exec lines:7010

exec lines:7210

exec lines:7410

exec lines:7610

exec lines:7810

exec lines:8010

exec lines:8210

exec lines:8410

exec lines:8610

exec lines:8810

exec lines:9010

exec lines:9210

exec lines:9410

exec lines:9610

exec lines:9810

exec lines:100
495010

exec lines:102

register_tick_function註冊的函式邏輯