What are common debugging techniques for resolving MySQL query issues in PHP?

Issue: Common debugging techniques for resolving MySQL query issues in PHP include checking for syntax errors in the query, ensuring proper connection to the database, and using error handling to catch any exceptions thrown during query execution. 

// Example code snippet for resolving MySQL query issues in PHP

// Establish database connection
$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);
}

// Sample query with error handling
$sql = "SELECT * FROM users";
$result = $conn->query($sql);

if ($result === FALSE) {
    echo "Error: " . $conn->error;
} else {
    // Process query results
    while($row = $result->fetch_assoc()) {
        echo "ID: " . $row["id"] . " - Name: " . $row["name"] . "<br>";
    }
}

// Close connection
$conn->close();

Keywords

MySQL debugging techniques PHP query issues error types

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