How can PHP be used to query a database and display specific results based on certain criteria?

To query a database and display specific results based on certain criteria using PHP, you can use SQL SELECT statements with conditions to filter the data. You can then fetch the results from the database and display them on a webpage using PHP. 

<?php
// Connect 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);
}

// Query the database based on certain criteria
$sql = "SELECT * FROM table_name WHERE column_name = 'criteria'";
$result = $conn->query($sql);

// Display the results
if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        echo "ID: " . $row["id"]. " - Name: " . $row["name"]. "<br>";
    }
} else {
    echo "0 results";
}

$conn->close();
?>

Keywords

PHP database query criteria results display SQL.

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