Implements PHP magic __toString method to convert the query to a string.
string The prepared statement.
Overrides Query::__toString
public function __toString() {
// Create a sanitized comment string to prepend to the query.
$comments = $this->connection
->makeComment($this->comments);
// Default fields are always placed first for consistency.
$insert_fields = array_merge($this->defaultFields, $this->insertFields);
if (!empty($this->fromQuery)) {
return $comments . 'INSERT INTO {' . $this->table . '} (' . implode(', ', $insert_fields) . ') ' . $this->fromQuery;
}
// For simplicity, we will use the $placeholders array to inject
// default keywords even though they are not, strictly speaking,
// placeholders for prepared statements.
$placeholders = array();
$placeholders = array_pad($placeholders, count($this->defaultFields), 'default');
$placeholders = array_pad($placeholders, count($this->insertFields), '?');
return $comments . 'INSERT INTO {' . $this->table . '} (' . implode(', ', $insert_fields) . ') VALUES (' . implode(', ', $placeholders) . ')';
}