jQuery Grid Plugin - jqGrid

HI,

I have strange problem. If I use "SELECT filed1, field2.... FROM some_table WHERE field1 LIKE 'something'" in "$grid->SelectCommand", everything is working as it should, but if I use variable "SELECT filed1, field2.... FROM some_table WHERE field1 LIKE '$get_variable'" I do not get expected result.

The strange is that I check this variable like this:

$query1 = "......some_table WHERE field1 LIKE 'something'";

$query2 = "......some_table WHERE field1 LIKE '$get_variable'";

if ($query1 == $query2) { echo "OK"; } else { echo "NOT OK"; }

-----------

I get "OK", but if I use it in "$grid->SelectCommand" I am not getting the same result (at $query2 I do not get any records).

The funiest is that if I define this variable like $get_variable = "something"; its working, but if I get this variable like $get_variable = ($_GET['get_variable']) ? $_GET['get_variable'] : $_POST['get_variable']; then it I do not get any result.

Any ideas?