How can a JOIN statement be used in PHP to combine data from two tables in a MySQL database?

To combine data from two tables in a MySQL database using a JOIN statement in PHP, you can write a SQL query that specifies the tables to be joined and the columns to be retrieved. This allows you to retrieve data from multiple tables based on a related column between them. 

<?php
// Establish a connection to the MySQL database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";
$conn = new mysqli($servername, $username, $password, $dbname);

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

// SQL query to join two tables and retrieve data
$sql = "SELECT table1.column1, table2.column2
        FROM table1
        JOIN table2 ON table1.id = table2.id";

$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // Output data of each row
    while($row = $result->fetch_assoc()) {
        echo "Column1: " . $row["column1"]. " - Column2: " . $row["column2"]. "<br>";
    }
} else {
    echo "0 results";
}

$conn->close();
?>

Keywords

JOIN statement PHP MySQL database tables data.

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