How can the selection of the database affect the insertion of data in PHP scripts?

The selection of the database can affect the insertion of data in PHP scripts because the database connection needs to be established with the correct database in order to successfully insert data. If the wrong database is selected, the insertion queries will fail. To solve this issue, make sure to select the correct database before executing any insertion queries in your PHP scripts. 

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

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

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Insert data into the correct table in the selected database
$sql = "INSERT INTO table_name (column1, column2, column3) VALUES ('value1', 'value2', 'value3')";
if ($conn->query($sql) === TRUE) {
    echo "New record created successfully";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}

$conn->close();
?>

Keywords

database selection data insertion PHP scripts SQL injection database connection

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