How important is error handling in PHP when working with MySQL queries to prevent issues like content not being displayed?

Error handling in PHP when working with MySQL queries is crucial to prevent issues like content not being displayed. Without proper error handling, it can be difficult to diagnose and fix problems that arise during database interactions. By implementing error handling, you can catch any errors that occur and handle them gracefully, ensuring that your content is displayed correctly. 

// Connect to MySQL database
$mysqli = new mysqli("localhost", "username", "password", "database");

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

// Perform MySQL query with error handling
$result = $mysqli->query("SELECT * FROM table");
if (!$result) {
    die("Error executing query: " . $mysqli->error);
}

// Display content from query result
while ($row = $result->fetch_assoc()) {
    echo $row['column_name'] . "<br>";
}

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

Keywords

PHP MySQL error handling query content display

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