Question

我正在尝试制作搜索功能，搜索多个列以查找基于关键字的匹配项。例如，当用户输入要搜索的关键字时，我需要跨五个类别列进行搜索，并在其任一类别列中返回包含该关键字的所有行的相应行名称。代码如下：

   <?php
    mysql_connect($dbhost, $dbuser, $dbpass) or die("could not connect.");
  mysql_select_db($dbname) or die("could not find database.");
  $result = "";
  //collect info from database
  if(isset($_POST['search'])) {
      $searchq = $_POST['search'];
      $searchq = preg_replace("#[^0-9a-z]#i", "", $searchq);
//SQL query
      $query = mysql_query("SELECT name FROM institutes WHERE category1 LIKE '%$searchq%' OR category2 LIKE '%$searchq%' OR category3 LIKE '%$searchq%' OR category4 LIKE '%$searchq%' OR category5 LIKE '%$searchq%'") or die("No records found.");
      $count = mysql_num_rows($query);
      if($count == 0)
      {
          $output = "There's no search result";
      }
      else {
          while($array = mysql_fetch_assoc($query))
    {
    ?>
        <li><?php echo $array['name'];?></li>
    <?php
    }
  ?>
      }
  }
  </ul>

我尝试了各种搜索方式，但每次都有错误或代码只返回每个行名称而不管条件如何。我们将不胜感激地解决这个问题。

Answer 1

<?php
    mysql_connect($dbhost, $dbuser, $dbpass) or die("could not connect.");
  mysql_select_db($dbname) or die("could not find database.");
  $result = "";
  //collect info from database
  if(isset($_POST['search'])&& $_POST['search'] != "")) {
      $searchq = $_POST['search'];
      $searchq = preg_replace("#[^0-9a-z]#i","",$searchq);

//SQL query
      $query = mysql_query("SELECT name FROM institutes WHERE category1 LIKE '%".$searchq."%' OR category2 LIKE '%".$searchq."%' OR category3 LIKE '%".$searchq."%' OR category4 LIKE '%".$searchq."%' OR category5 LIKE '%".$searchq."%'");
      $count = mysql_num_rows($query);
      if($count == 0)
      {
          $output = "There's no search result";
      }
 else {
          while($row= mysql_fetch_assoc($query))
            {

             echo $row['name'];

            }

      }
  }
  ?>

搜索多个列

1 个答案: