How to escape strings in SQL Server using PHP?

Question

I'm looking for the alternative of mysql_real_escape_string() for SQL Server. Is addslashes() my best option or there is another alternative function that can be used?

An alternative for mysql_error() would also be useful.

Answer 1

addslashes() isn't fully adequate, but PHP's mssql package doesn't provide any decent alternative. The ugly but fully general solution is encoding the data as a hex bytestring, i.e.

$unpacked = unpack('H*hex', $data); mssql_query('     INSERT INTO sometable (somecolumn)     VALUES (0x' . $unpacked['hex'] . ') '); 

Abstracted, that would be:

function mssql_escape($data) {     if(is_numeric($data))         return $data;     $unpacked = unpack('H*hex', $data);     return '0x' . $unpacked['hex']; }  mssql_query('     INSERT INTO sometable (somecolumn)     VALUES (' . mssql_escape($somevalue) . ') '); 

mysql_error() equivalent is mssql_get_last_message().