Description:
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mssql_connect() returns NULL regardless of a sane and completed connection.

PHP-5.0.1 zip file from http://www.php.net/

php.ini is identical to php.ini-recommended with the mssql extension enabled.

Reproduce code:
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$foo = mssql_connect("server", "user", "pass");
var_dump($foo);

Expected result:
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$foo != NULL

Actual result:
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$foo == NULL