public function InsertQuery::__toString

Implements PHP magic __toString method to convert the query to a string.

Return value

string: The prepared statement.

Overrides Query::__toString

File

core/includes/database/query.inc, line 672

Non-specific Database query code. Used by all engines.

Class

InsertQuery

General class for an abstracted INSERT query.

Code

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);

  // Escape each field.
  foreach ($insert_fields as $field_key => $insert_field) {
    $insert_fields[$field_key] = $this->connection->escapeField($insert_field);
  }

  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) . ')';
}