What are common issues when inserting data into a new database table in PHP?

Common issues when inserting data into a new database table in PHP include not establishing a connection to the database, not selecting the correct database, not specifying the correct table name or column names, and not properly sanitizing input data to prevent SQL injection attacks. To solve these issues, make sure to establish a connection to the database, select the correct database, specify the correct table and column names, and use prepared statements or parameterized queries to sanitize input data. 

<?php
// Establish a connection to the database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database_name";

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

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

// Insert data into a new table
$sql = "INSERT INTO table_name (column1, column2) VALUES (?, ?)";
$stmt = $conn->prepare($sql);
$stmt->bind_param("ss", $value1, $value2);

// Sanitize input data
$value1 = mysqli_real_escape_string($conn, $_POST['value1']);
$value2 = mysqli_real_escape_string($conn, $_POST['value2']);

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

// Close the connection
$stmt->close();
$conn->close();
?>

Keywords

SQL injection PDO prepared statements data validation error handling

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