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我对 Get & Post 进行了更改，但它什么也没做，我认为它的形式使这变得困难，这个部分下面的表格，我做错了什么吗？当我对 GET 和 POST 使用“名称”而不是“提交”和“开始”时，我不能说但肯定知道一件事，我收到错误提示未定义索引：“名称”，这是怎么回事，我照你说的做了，但什么也没做！

/////////////表格/////////////////////

<form method="post" action="search_govern.php?go" id="searchform">
  <input type="text" name="name">
  <input type="submit" name="submit" value="Yell">
</form>

//////////表格结束//////////////////

<?php   

//if(isset($_POST['submit'])){
//if(isset($_GET['go'])){
//if(preg_match("/[A-Z | a-z]+/", $_POST['name'])){
//$name=$_POST['name'];
////////////////////////////////////////

我认为问题就在这里，但我不确定我做错了什么，你能指出我的错误或给我看一个例子吗！ 

if(isset($_POST['submit'])){
if(isset($_GET['go'])){
$raw_name = $_GET['name'] ;

if(preg_match("/[A-Z | a-z]+/", $raw_name )){
$name=$raw_name;
////////////////////////////////////////

include "connect/connect.php";

//-query the database table
$sql="SELECT userId, Attribute, Name FROM government  WHERE Name LIKE '%$name%' OR   Attribute LIKE '%$name%' ORDER BY userid ASC";

///////////////////////// PAGINATION CLASS////////////////////////////////////


class Pagination {

public $current_page;
public $per_page;
public $total_count;

public function __construct($page=1, $per_page=20, $total_count=0){
 $this->current_page = (int)$page;
 $this->per_page = (int)$per_page;
 $this->total_count = (int)$total_count;
}

   public function offset() {

   return ($this->current_page - 1) * $this->per_page;
}

  public function total_pages() {
   return ceil($this->total_count/$this->per_page);
}

  public function previous_page() {
  return $this->current_page - 1;
}

  public function next_page() {
  return $this->current_page + 1;
}

   public function has_previous_page() {
    return $this->previous_page() >= 1 ? true : false;
}

    public function has_next_page() {
        return $this->next_page() <= $this->total_pages() ? true : false;
    }
}

///////////////////////////END OF PAGINATION CLASS///////////////////////////////

$curent_page   = isset($_GET['page'])&&(int)$_GET['page'] !=0 ? (int)$_GET['page'] : 1 ;
$per_page = 7 ;

$sql = "SELECT COUNT(*) FROM government ";
$result = mysql_query($sql);
$total = mysql_result($result , 0);

$pagination    = new Pagination($curent_page , $per_page , $total);

///////////////////////////////////////////////////////////////////////

         //echo 'perpage      : '.$pagination->per_page.'<br />';
         //echo 'offset       : '.$pagination->offset().'<br />';

///////////////////////////////////////////////////////////////////////

$rows_to_show = "SELECT userId, Attribute, Name FROM government WHERE Name LIKE '%$name%' OR Attribute LIKE '%$name%' LIMIT {$pagination->per_page} OFFSET   {$pagination->offset()}";

if($pagination->total_pages() > 1 ){
         echo '<div id="pagination_div">';
          if($pagination->has_next_page()){

          echo '<span><a href="search_govern.php?page='.$pagination->next_page();
          echo '&name='.$name;
          echo'" >> </a></span>' ;

          }
          for($i=1 ; $i <= $pagination->total_pages() ; $i++ ){
             if($i == $pagination->current_page ){
             echo  '&nbsp;<strong>'.$i.'&nbsp;</strong>';
             }
             else   {                 
             echo '<span><a href="search_govern.php?page='.$i;
             echo '&name='.$name;
             echo'"> '.$i.' </a></span>';  
             }
          }
          if($pagination->has_previous_page()){

            echo'<span><a href="search_govern.php?page='.$pagination->previous_page();
            echo '&name='.$name;
            echo'" >  < </a></span>';
          } 

        echo ' </div> ';

         }


$dtotal = mysql_query($rows_to_show);

    echo "$dtotal";

if ( $dtotal === FALSE ){ //////////// check to see if the query fails
       die(mysql_error());
    }
    else{


//-create while loop and loop through result set
while($row=mysql_fetch_array($dtotal)){
$userId=$row['userId'];
$Attribute=$row['Attribute'];
$Name=$row['Name'];


//-display the result of the array
echo "<p style=\"margin:2px 0px 5px 0px;\" >"; 
echo "<p>" ."<a href=\"search_govern.php?id=$userId\"> "  . $Name . "</a></p>";
echo "</p>";
}
}
}
else{
echo "<p>&nbsp;&nbsp;&nbsp;Please enter a search query</p>";
}
}
}

?>

4

1 回答 1

0

我建议一个更简单、更干净的代码

这是一个简单的分页类：

class Pagination {

  public $current_page;
  public $per_page;
  public $total_count;

  public function __construct($page=1, $per_page=20, $total_count=0){
    $this->current_page = (int)$page;
    $this->per_page = (int)$per_page;
    $this->total_count = (int)$total_count;
  }

  public function offset() {

    return ($this->current_page - 1) * $this->per_page;
  }

  public function total_pages() {
    return ceil($this->total_count/$this->per_page);
    }

  public function previous_page() {
    return $this->current_page - 1;
  }

  public function next_page() {
    return $this->current_page + 1;
  }

    public function has_previous_page() {
        return $this->previous_page() >= 1 ? true : false;
    }

        public function has_next_page() {
            return $this->next_page() <= $this->total_pages() ? true : false;
        }
}

将其保存在 .php 文件中并将其包含在您的页面中，这是您使用它的方式：

$分页=新分页（$curent_page，$per_page，$total）；

 $curent_page   // get it from url with GET method
e.g 
$curent_page   = isset($_GET['page'])&&(int)$_GET['page'] !=0 ? (int)$_GET['page'] : 1 ;

-

$per_page // you have to define how many rows do you want to show in the page
e.g
 $per_page = 20 ;

-

 $total // you have to  count all of the rows in your table 

e.g
    $sql = "SELECT COUNT(*) FROM `$tbl` ";
    $result = mysql_query($sql , $db_connection);
    $total = mysql_result($result , 0);


now you can create a pagination obj
 $pagination    = new Pagination($curent_page , $per_page , $total);

-

     $pagination->offset() // use this as offset in your query in each
     page 

 $pagination->per_page // use this as LIMIT in your query

        e.g
        $rows_to_show = "SELECT * FROM `$tbl` LIMIT {$pagination->per_page} OFFSET {$pagination->offset()}";

最后在页面底部创建html分页

 if($pagination->total_pages() > 1 ){
             echo '<div id="pagination_div">';
              if($pagination->has_next_page()){

              echo '<span><a href="index.php?page='.$pagination->next_page();
              echo'" >> </a></span>' ;

              }
              for($i=1 ; $i <= $pagination->total_pages() ; $i++ ){
                 if($i == $pagination->current_page ){
                 echo  '&nbsp;<strong>'.$i.'&nbsp;</strong>';
                 }
                 else   {                 
                 echo '<span><a href="index.php?page='.$i;
                 echo'"> '.$i.' </a></span>';  
                 }
              }
              if($pagination->has_previous_page()){

                echo'<span><a href="index.php?page='.$pagination->previous_page();
                echo'" >  < </a></span>';
              } 

            echo ' </div> ';

             }

//////////////////////////////////// 编辑2 ///// //////////////////////////////

 /// $name may be sent to the page via post/form   OR via get/url so you have to be prepare for both , so this is how you get $name at the top of page 

 if(isset($_POST['name']))
 $raw_name = $_POST['name'] ;
 if(isset($_GET['name']))
 $raw_name = $_GET['name'] ;

if(preg_match("/[A-Z | a-z]+/", $raw_name )){
$name=$raw_name;
///// do other stuff

//////// 至于分页，你必须将 $name 发送到每一页

 if($pagination->total_pages() > 1 ){
             echo '<div id="pagination_div">';
              if($pagination->has_next_page()){

              echo '<span><a href="index.php?page='.$pagination->next_page();
              echo '&name='.$name;
              echo'" >> </a></span>' ;

              }
              for($i=1 ; $i <= $pagination->total_pages() ; $i++ ){
                 if($i == $pagination->current_page ){
                 echo  '&nbsp;<strong>'.$i.'&nbsp;</strong>';
                 }
                 else   {                 
                 echo '<span><a href="index.php?page='.$i;
                 echo '&name='.$name;
                 echo'"> '.$i.' </a></span>';  
                 }
              }
              if($pagination->has_previous_page()){

                echo'<span><a href="index.php?page='.$pagination->previous_page();
                echo '&name='.$name;
                echo'" >  < </a></span>';
              } 

            echo ' </div> ';

             }
于 2012-04-21T22:21:16.260 回答