(no version information, might be only in CVS)
Quotes a string for use in a query.
( string string [, int parameter_type] )
PDO::quote() places quotes around the input string (if
required) and escapes special characters within the input string, using a
quoting style appropriate to the underlying driver.
If you are using this function to build SQL statements, you are
strongly recommended to use
PDO::prepare() to prepare SQL statements with bound
parameters instead of using PDO::quote() to interpolate
user input into a SQL statement. Prepared statements with bound parameters
are not only more portable, more convenient, immune to SQL injection, but
are often much faster to execute than interpolated queries, as both the
server and client side can cache a compiled form of the query.
Not all PDO drivers implement this method (notably PDO_ODBC). Consider
using prepared statements instead.