PHP & MySQL – Update Records Example

PHP uses mysqli query() or mysql_query() function to update records in a MySQL table. This function takes two parameters and returns TRUE on success or FALSE on failure.

Syntax

$mysqli->query($sql,$resultmode)
Sr.No.Parameter & Description
1$sqlRequired – SQL query to update records in a MySQL table.
2$resultmodeOptional – Either the constant MYSQLI_USE_RESULT or MYSQLI_STORE_RESULT depending on the desired behavior. By default, MYSQLI_STORE_RESULT is used.

Example

Try the following example to update a record in a table −

Copy and paste the following example as mysql_example.php −

<html>
   <head>
      <title>Updating MySQL Table</title>
   </head>
   <body>
      <?php
         $dbhost = 'localhost';
         $dbuser = 'root';
         $dbpass = 'root@123';
         $dbname = 'ADGLOB';
         $mysqli = new mysqli($dbhost, $dbuser, $dbpass, $dbname);
         
         if($mysqli->connect_errno ) {
            printf("Connect failed: %s<br />", $mysqli->connect_error);
            exit();
         }
         printf('Connected successfully.<br />');
		 
         if ($mysqli->query('UPDATE adglob_tbl set adglob_title = "Learning Java" where adglob_id = 4')) {
            printf("Table adglob_tbl updated successfully.<br />");
         }
         if ($mysqli->errno) {
            printf("Could not update table: %s<br />", $mysqli->error);
         }
   
         $sql = "SELECT adglob_id, adglob_title, adglob_author, submission_date FROM adglob_tbl";
		 
         $result = $mysqli->query($sql);
           
         if ($result->num_rows > 0) {
            while($row = $result->fetch_assoc()) {
               printf("Id: %s, Title: %s, Author: %s, Date: %d <br />", 
                  $row["adglob_id"], 
                  $row["adglob_title"], 
                  $row["adglob_author"],
                  $row["submission_date"]);               
            }
         } else {
            printf('No record found.<br />');
         }
         mysqli_free_result($result);
         $mysqli->close();
      ?>
   </body>
</html>

Output

Access the mysql_example.php deployed on apache web server and verify the output. Here we’ve entered multiple records in the table before running the select script.

Connected successfully.
Table adglob_tbl updated successfully.
Id: 1, Title: MySQL adglob, Author: Jay, Date: 2021
Id: 2, Title: HTML adglob, Author: Jay, Date: 2021
Id: 3, Title: PHP adglob, Author: Jay, Date: 2021
Id: 4, Title: Learning Java, Author: Jay, Date: 2021
Id: 5, Title: Apache , Author: Subu, Date: 2021

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