php - 无法回显 php 类变量

Question

我想写一个php简单的分页类。这是我的代码：

<?php
class Pagination {
public $rowsPerPage;
public $currentPage;
public $totalPages;
public $totalRows;
public $firstElement;
public $lastElement;


     public function paginate()
        { 
            if(isset($_GET['page'])){
                $this->currentPage  = $_GET['page'];     
            }           

                         $this->totalPages =  $this->totalRows/$this->rowsPerPage  ;
             return $this->totalPages;  

              $this->firstElement = $this->currentPage-1)*$this->rowsPerPage+1;
              return $this->firstElement;                
        }
}

$totalRecords = 55;
$paginator = new Pagination();
$paginator->totalRows = $totalRecords;
$paginator->rowsPerPage = 5;
$paginator->paginate();
echo $paginator->totalPages;
echo $paginator->firstElement;  
?>

我可以回显 $paginator->totalPages; 但不是 $paginator->firstElement。我做错了什么？谢谢

Answer 1

您的paginate函数有两个return语句。

当代码点击 时return $this->totalPages;，它将停止运行该函数。因此，这$this->firstElement = ...条线永远不会运行。