Hello Abu,
in these days I have migrated my application from phpgrid 2.2 to phpgrid 2.6 and and I noticed that some pages did not load with the 2.6 version
After a bit of testing I found that the problem are the columns with an option like this:

$col[“formatter”] = “function(cellval,options,rowdata){return rowdata.field001.replace(‘abc’,’123′)}”;

If the field field001 contains a NULL value, the grid doesn’t load (the grid freezes with Loading…) and in Firefox web console I get the error ‘TypeError: rowdata.field001 is null’

If I remove the replace method:

$col[“formatter”] = “function(cellval,options,rowdata){return rowdata.field001}”;

the grid load but show the value null in the column which is not pleasant to see (in phpgrid 2.2 is blank). Besides, I need to use the replace method to manipulate the output.

So there must be a difference on how the NULL value is treated betwheen phpgrid 2.2 and 2.6

I know thare there are workarounds, both in mysql and javascript, to handle NULL values, but I should change a lot of pages with this problem.
Please let me know if you can address this in your code.
Thanks!