Description:
------------
When using PDO_DBLIB to prepare statements, integers are quoted and fatal error is returned.

The freetds.log contains the actual query statement sent to the database server (Sybase ASE 11) and the integer value in the query statement was quoted. I tested a prepared statement using the PEAR::DB method and it worked fine.

using freetds-stable. (0.63)

php 5.2.1 config line:
./configure  --with-apache=../apache_1.3.33 --enable-gd-imgstrttf --enable-gd-native-ttf --enable-memory-limit --enable-sablot-errors-descriptive --enable-track-vars --enable-trans-sid --enable-xslt --with-config-file-path=/www/conf --with-curl=/usr/local/lib --with-expat --with-fdftk=/usr --with-freetype-dir=/usr --with-gd-native-ttf --with-gd --with-jpeg-dir=../jpeg-6b --with-openssl --with-png --with-regex --with-sablot-js --with-sybase-ct=/usr/local --with-xml --with-xmlrpc --with-xslt-sablot --with-zlib --enable-ftp --enable
-pdo -with-pdo-dblib --with-xsl --with-mysql --with-gmp --with-pdo-odbc=ibm-db2,/home/db2inst1/sqllib

Thanks for any help.

Reproduce code:
---------------
$dsn = 'dblib:host=1.2.3.4:4100';
$db = new PDO($dsn, 'user', 'password',array(PDO_ATTR_PERSISTENT => 1));
$db->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);

$sql = "SELECT x from y..z where x = ?";
$sth = $db->prepare($sql);
$sth->execute(array(1));
while ($row = $sth->fetch(PDO::FETCH_ASSOC)){
    print_r($row);
}


Expected result:
----------------
Array ( [x] => 1 )

Actual result:
--------------
Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000]: General error: 20018 Implicit conversion from datatype 'VARCHAR' to 'INT' is not allowed. Use the CONVERT function to run this query. [20018] (severity 5) [(null)]' in [__FILE__]:[__LINE__] Stack trace: #0 [__FILE__]([__LINE__]): PDOStatement->execute(Array) #1 {main} thrown in [__FILE__] on line [__LINE__]