Retrieve (or simulate) full query from PDO prepared statement

Question

I stumbled upon this question from two years ago.

Is there a way to get the raw SQL string executed when calling PDOStatement::execute() on a prepare

Answer 1

The following static method takes a PDO query template (an SQL query with ? and/or :name placeholders) and interpolates the parameters:

static public function getDebugFullQuery($query, $params = array()){
    if(is_array($params) && count($params)){

        $search = [];
        $replace = [];

        foreach($params as $k => $p){
            $pos = strpos($query, ":{$k}");
            if($pos !== false){
                $query = substr($query, 0, $pos) . "%!-!{$k}!-!%" . substr($query, $pos + strlen($k) + 1);
            }
            else {
                $pos = strpos($query, "?");
                if($pos !== false){
                    $query = substr($query, 0, $pos) . "%!-!{$k}!-!%" . substr($query, $pos + 1);
                }
                else {
                    break;
                }
            }

            $search[] = "%!-!{$k}!-!%";
            $replace[] = "'" . str_replace(array("\r", "\n", "'"), array("\\\\r", "\\\\n", "\\'"), $p) . "'";
        }

        if(count($search)){
            $query = str_replace($search, $replace, $query);
        }
    }

    return $query;
}

As indicated by the method name, you should use this for debugging purposes only.