How to write a PHP script and use ORDER BY clause in it to sort the data of a MySQL table?-Mysql Tutorial-php.cn

How to write a PHP script and use ORDER BY clause in it to sort the data of a MySQL table?

王林

Release： 2023-08-31 19:05:07

forward

564 people have browsed it

如何编写PHP脚本并在其中使用ORDER BY子句对MySQL表的数据进行排序？

We can use similar syntax of ORDER BY clause in PHP function mysql_query(). This function is used to execute a SQL command and later you can use another PHP function - mysql_fetch_array() to get all the selected data.

To illustrate this, we have the following example-

Example

In this example, we are writing a PHP script which will press Return results in descending order by tutorial author -

<?php
   $dbhost = &#39;localhost:3036&#39;;
   $dbuser = &#39;root&#39;;
   $dbpass = &#39;rootpassword&#39;;
   $conn = mysql_connect($dbhost, $dbuser, $dbpass);

   if(! $conn ) {
      die(&#39;Could not connect: &#39; . mysql_error());
   }
   $sql = &#39;SELECT tutorial_id, tutorial_title,
      tutorial_author, submission_date
      FROM tutorials_tbl
      ORDER BY tutorial_author DESC&#39;;

   mysql_select_db(&#39;TUTORIALS&#39;);
   $retval = mysql_query( $sql, $conn );

   if(! $retval ) {
      die(&#39;Could not get data: &#39; . mysql_error());
   }

   while($row = mysql_fetch_array($retval, MYSQL_ASSOC)) {
      echo "Tutorial ID :{$row[&#39;tutorial_id&#39;]} <br> ".
         "Title: {$row[&#39;tutorial_title&#39;]} <br> ".
         "Author: {$row[&#39;tutorial_author&#39;]} <br> ".
         "Submission Date : {$row[&#39;submission_date&#39;]} <br> ".
         "--------------------------------<br>";
      }
   echo "Fetched data successfully";
   mysql_close($conn);
?>

Copy after login

The above is the detailed content of How to write a PHP script and use ORDER BY clause in it to sort the data of a MySQL table?. For more information, please follow other related articles on the PHP Chinese website!