循环仅使用php、ajax和javascript执行最后一个数组元素。

$myArray = array("元素1", "元素2", "元素3", "元素4");

$myArrayJson = json_encode($myArray);
echo "<script>var myArray = $myArrayJson;</script>";

function getLastElement() {
  $.ajax({
    url: "get_last_element.php",
    type: "POST",
    dataType: "json",
    success: function(response) {
      var lastElement = response.lastElement;
      // 执行最后一个元素的操作
      console.log(lastElement);
    }
  });
}

$lastElement = end($myArray);
$response = array("lastElement" => $lastElement);
echo json_encode($response);