How can one troubleshoot and identify the source of the "Query was empty" error in a PHP script?

The "Query was empty" error in a PHP script typically occurs when the SQL query being executed is empty or null. To troubleshoot this issue, check the variable or string being passed to the query function to ensure it is not empty. Additionally, verify that the query string is properly constructed before execution. 

// Example code snippet to prevent the "Query was empty" error
$query = "SELECT * FROM table_name WHERE column_name = 'value'";

if (!empty($query)) {
    // Execute the query
    $result = mysqli_query($connection, $query);
    
    // Rest of the code to handle the query result
} else {
    echo "Error: Query is empty.";
}

Keywords

PHP MySQL SQL query error

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