## 例

`

     string mysql_real_escape_string ( string $unescaped_string [, resource $link_identifier ] )

`

## 説明

Escapes special characters in the unescaped_string, taking into account the current character set of the connection so that it is safe to place it in a mysql_query(). If binary data is to be inserted, this function must be used. mysql_real_escape_string() calls MySQL's library function mysql_real_escape_string, which prepends backslashes to the following characters: \x00, \n, \r, \, ', " and \x1a. This function must always (with few exceptions) be used to make data safe before sending a query to MySQL.

## 戻り値

Returns the escaped string, or FALSE on error.