Description:
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FYI:  I am running php 5.0.4 (binary distro) for windows, with apache 2.0.50 (binary distro), on a winXP sp1 machine.

If i execute:

select field1 as 'abcdefghijklmnopqrstuvwxyz0123456789' from mytable

in SQL Query Analyzer against a SQL Server 2000 database, i get the expected result that the field name is named that whole big long alias, 36 characters in length.  

However, when i execute the same query using mssql_query() in PHP, and i examine the results of mssql_fetch_object(), mssql_fetch_array(), or mssql_fetch_assoc(), the field name (alias) is truncated at 30 characters (it seems).

I do the same test against the mysql_xxx extension, and I get no truncation (i tested with upwards of about 100 chars in the field_name alias and all was fine).

Reproduce code:
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$link = mssql_connect("localhost","sa","mypassword");
mssql_select_db("my_db",$link);

$query = "select field1 as 'abcdefghijklmnopqrstuvwxyz0123456789' from my_table";

$result = mssql_query($query);
print_r(mssql_fetch_object($result));

$result = mssql_query($query);
print_r(mssql_fetch_array($result));

$result = mssql_query($query);
print_r(mssql_fetch_assoc($result));

Expected result:
----------------
stdClass Object ( [abcdefghijklmnopqrstuvwxyz0123456789] => 0 ) Array ( [0] => 0 [abcdefghijklmnopqrstuvwxyz0123456789] => 0 ) Array ( [abcdefghijklmnopqrstuvwxyz0123456789] => 0 )

Actual result:
--------------
stdClass Object ( [abcdefghijklmnopqrstuvwxyz0123] => 0 ) Array ( [0] => 0 [abcdefghijklmnopqrstuvwxyz0123] => 0 ) Array ( [abcdefghijklmnopqrstuvwxyz0123] => 0 )


** notice that all 3 methods have a truncated field_name to 30 characters.  This obviously results in unexpected code problems when I have dynamic SQL queries being generated and its difficult to predict if an alias I assign to a field may exceed this limit, and if it does, i never get the value out in my result-set processing because the name doesn't match what i think it should.