​x
 
<!DOCTYPE html>
<html>
<body>
​
<?php
$count = 0;
function example() {
  global $count;
  $count++;
  echo "已执行 $count 条指令<br>";
}
register_tick_function('example');
​
declare(ticks=1):
  $cars = ["Ford", "Volvo", "BMW"];
  foreach($cars as $car) {
    echo "$car <br>";
  }
enddeclare;
?>
​
</body>
</html>