What are the potential pitfalls of not using error handling functions like mysql_error() in PHP?

Not using error handling functions like mysql_error() in PHP can lead to potential issues such as not being able to properly identify and troubleshoot errors in database queries, which can result in unexpected behavior or security vulnerabilities. To solve this problem, it is important to implement error handling functions to catch and display any errors that occur during database operations. 

// Connect to MySQL database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

$conn = mysqli_connect($servername, $username, $password, $dbname);

// Check connection
if (!$conn) {
    die("Connection failed: " . mysqli_connect_error());
}

// Perform database query
$sql = "SELECT * FROM users";
$result = mysqli_query($conn, $sql);

// Check for errors
if (!$result) {
    die("Error: " . mysqli_error($conn));
}

// Process query results
while($row = mysqli_fetch_assoc($result)) {
    echo "Name: " . $row["name"] . "<br>";
}

// Close connection
mysqli_close($conn);

Keywords

error handling mysql_error() PHP database exceptions

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