PHP count() 函数

返回数组中元素的数目：

   <?php
   $cars=array("Volvo","BMW","Toyota");
  echo count($cars);
  ?> 
 

递归地计算数组中元素的数目：

   <?php
   $cars=array
   (
   "Volvo"=>array
   (
   "XC60",
   "XC90"
   ),
   "BMW"=>array
   (
   "X3",
   "X5"
   ),
   "Toyota"=>array
   (
   "Highlander"
   )
   ); 
  
  echo "Normal count: " . count($cars)."<br>";
  echo "Recursive count: " . count($cars,1);
  ?>