Language: PHP
Label: vulnerable
CWE: CWE-352 \u2014 Cross-Site Request Forgery (CSRF)
The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.

Code:
function runQuery($query){
   
    global $conn;			// MySQL connection variable.

    $runQuery = $conn->query($query);

    // Check If the syntax has any error then throw an the error. Otherwise return ture;
    if($runQuery === false) {

        // insert log 
        create_log($conn->error, debug_backtrace());

        // Keep the transaction error record
        $conn->get_all_error[] = $conn->error;

        return $conn->error; // Return the error

    } else {
        return true;
    }

}