IMG-LOGO
Home Course Delete Data From MySQL In PHP

Delete Data From MySQL In PHP

by MH RISHAD - 26 Jan 2019
IMG

he DELETE statement is used to delete records from a table:

DELETE FROM table_name
WHERE some_column = some_value

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

Let's look at the "MyVisitor" table:

id firstname lastname email reg_date
1 jelly joy jelly@example.com 2014-10-22 14:26:15
2 Mories Mona Mories@example.com 2014-10-23 10:22:30
3 Jafar iqbal Jafar@example.com 2014-10-26 10:48:23

The following examples delete the record with id=3 in the "MyVisitor" 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 to delete a record
$sql = "DELETE FROM MyVisitorWHERE id=3";

if ($conn->query($sql) === TRUE) {
    echo "Record deleted successfully";
} else {
    echo "Error deleting 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 to delete a record
$sql = "DELETE FROM MyVisitorWHERE id=3";

if (mysqli_query($conn, $sql)) {
    echo "Record deleted successfully";
} else {
    echo "Error deleting record: " . mysqli_error($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 to delete a record
    $sql = "DELETE FROM MyVisitorWHERE id=3";

    // use exec() because no results are returned
    $conn->exec($sql);
    echo "Record deleted successfully";
    }
catch(PDOException $e)
    {
    echo $sql . "<br>" . $e->getMessage();
    }

$conn = null;
?>

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

id firstname lastname email
jelly joy jelly@example.com 2014-10-22 14:26:15
Mories Mona Mories@example.com 2014-10-23 10:22:30
Share:

Leave a Comment

Required fields are marked *