PHP MySQL: How to Update Data in a Table

Tutorial

Forum

PHP

PHP Basic Tutorial

Modify Strings

Concatenate Strings

Slicing Strings

Escape Characters

PHP If...Else...Elseif

PHP If...Else

PHP Shorthand If

PHP Nested If

PHP Switch

PHP Loops

While Loop

Do While Loop

For Loop

Foreach Loop

Indexed Arrays

Associative Arrays

Create Arrays

Access Arrays

Update Array Items

Add Array Items

Remove Array Items

Sorting Arrays

Multidimensional Arrays

Array Functions

PHP Forms

MySQL Connection

PHP Advanced

PHP File Create/Write

PHP OOP

PHP Static Properties

PHP Interview

MySQL Update Data

❮ Previous

Next ❯

Updating data in a MySQL table using PHP involves executing an SQL UPDATE statement through either procedural or object-oriented approaches.

Syntax:

UPDATE table_name SET column1 = value1, column2 = value2 WHERE condition;

table_name: The name of the table (e.g., users).
SET: Specifies the columns and their new values.
WHERE: Limits which rows are updated (use it carefully to avoid updating all rows).

The following example updates the name and age of the user with id=1.

Example (Procedural Method)

<?php

$servername = "localhost";

$username = "root";

$password = "";

$dbname = "mydatabase"; // Change to your database name

// Create connection

$conn = mysqli_connect($servername, $username, $password, $dbname);

// Check connection

if (!$conn) {

die("Connection failed: " . mysqli_connect_error());

}

// Update query

$sql = "UPDATE users SET name='John Doe', email='johndoe@example.com' WHERE id=1";

if (mysqli_query($conn, $sql)) {

echo "Record updated successfully";

} else {

echo "Error updating record: " . mysqli_error($conn);

}

// Close connection

mysqli_close($conn);

Example (Object-Oriented Method)

<?php

$servername = "localhost";

$username = "root";

$password = "";

$dbname = "mydatabase";

// Create connection

$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection

if ($conn->connect_error) {

die("Connection failed: " . $conn->connect_error);

}

// Update query

$sql = "UPDATE users SET name='John Doe', email='johndoe@example.com' WHERE id=1";

if ($conn->query($sql) === TRUE) {

echo "Record updated successfully";

} else {

echo "Error updating record: " . $conn->error;

}

// Close connection

$conn->close();

Example (PDO)

<?php

$servername = "localhost";

$username = "root";

$password = "";

$dbname = "mydatabase";

try {

$conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);

// Set PDO error mode to exception

$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

// Update query with placeholders

$sql = "UPDATE users SET name=:name, email=:email WHERE id=:id";

// Prepare statement

$stmt = $conn->prepare($sql);

// Bind parameters

$stmt->bindParam(':name', $name);

$stmt->bindParam(':email', $email);

$stmt->bindParam(':id', $id);

// Values to update

$name = "John Doe";

$email = "johndoe@example.com";

$id = 1;

// Execute update

$stmt->execute();

echo "Record updated successfully";

} catch (PDOException $e) {

echo "Error updating record: " . $e->getMessage();

}

// Close connection

$conn = null;

❮ Previous

Next ❯

Whereisstuff is simple learing platform for beginer to advance level to improve there skills in technologies.we will provide all material free of cost.you can write a code in runkit workspace and we provide some extrac features also, you agree to have read and accepted our terms of use, cookie and privacy policy.