1. Home
  2. Php
  3. PHP MySQL Update Record

 PHP MySQL Update Record PHP

PHP MySQL Update Record  


PHP MySQL Update Record

PHP MySQL Update Record

Update Data In a MySQL Table Using MySQLi and PDO

The UPDATE statement is used to update existing records in a table:

UPDATE table_name
SET column1=value, column2=value2,...
WHERE some_column=some_value 

Notice the WHERE clause in the UPDATE syntax: The WHERE clause specifies which record or records that should be updated. If you omit the WHERE clause, all records will be updated!

Example

  1. <?php  
  2. $host = 'localhost:3306';  
  3. $user = '';  
  4. $pass = '';  
  5. $dbname = 'test';  
  6.   
  7. $conn = mysqli_connect($host, $user, $pass,$dbname);  
  8. if(!$conn){  
  9.   die('Could not connect: '.mysqli_connect_error());  
  10. }  
  11. echo 'Connected successfully<br/>';  
  12.   
  13. $id=2;  
  14. $name="Rahul";  
  15. $salary=80000;  
  16. $sql = "update emp4 set name=\"$name\", salary=$salary where id=$id";  
  17.  
  18. if(mysqli_query($conn, $sql)){  
  19.  echo "Record updated successfully";  
  20. }else{  
  21. echo "Could not update record: ". mysqli_error($conn);  
  22. }  
  23.   
  24. mysqli_close($conn);  
  25. ?>  

Output:

Connected successfully
Record updated successfully

Let's look at the "MyGuests" table:

id firstname lastname email reg_date
1 John Doe john@example.com 2014-10-22 14:26:15
2 Mary Moe mary@example.com 2014-10-23 10:22:30

The following examples update the record with id=2 in the "MyGuests" table:

Example (MySQLi Object-oriented)

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
} 

$sql = "UPDATE MyGuests SET lastname='Doe' WHERE id=2";

if ($conn->query($sql) === TRUE) {
    echo "Record updated successfully";
} else {
    echo "Error updating record: " . $conn->error;
}

$conn->close();
?>

 

Example (MySQLi Procedural)

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

// Create connection
$conn = mysqli_connect($servername, $username, $password, $dbname);
// Check connection
if (!$conn) {
    die("Connection failed: " . mysqli_connect_error());
}

$sql = "UPDATE MyGuests SET lastname='Doe' WHERE id=2";

if (mysqli_query($conn, $sql)) {
    echo "Record updated successfully";
} else {
    echo "Error updating record: " . mysqli_error($conn);
}

mysqli_close($conn);
?>
 

Example (PDO)

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDBPDO";

try {
    $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    $sql = "UPDATE MyGuests SET lastname='Doe' WHERE id=2";

    // Prepare statement
    $stmt = $conn->prepare($sql);

    // execute the query
    $stmt->execute();

    // echo a message to say the UPDATE succeeded
    echo $stmt->rowCount() . " records UPDATED successfully";
    }
catch(PDOException $e)
    {
    echo $sql . "<br>" . $e->getMessage();
    }

$conn = null;
?>

 

After the record is updated, the table will look like this:

id firstname lastname email reg_date
1 John Doe john@example.com 2014-10-22 14:26:15
2 Mary Doe mary@example.com 2014-10-23 10:22:30

Download free E-book of PHP

#askProgrammers
Learn Programming for Free

Join Programmers Community on Telegram

Talk with Experienced Programmers

Just drop a message, we will solve your queries