What is the significance of using mysql_error() function in PHP and how can it help in debugging queries?

The mysql_error() function in PHP is significant as it allows developers to retrieve the error message generated by the most recent MySQL function call. This can be helpful in debugging queries as it provides specific information about what went wrong during the query execution. By using mysql_error(), developers can quickly identify and address any issues that may be causing errors in their MySQL queries. 

// Example code snippet demonstrating the use of mysql_error() function in PHP for debugging queries

// Make a MySQL connection
$conn = mysqli_connect("localhost", "username", "password", "database");

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

// Perform a MySQL query
$query = "SELECT * FROM users WHERE id = 1";
$result = mysqli_query($conn, $query);

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

// Close the connection
mysqli_close($conn);

Keywords

mysql_error PHP debugging queries significance

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