Some websites built on older versions of PHP 5.3.0 or earlier could not fatched the several database records. After some investigation we found that problem was with Register_globals (). Register_globals () is DEPRECATED in PHP 5.3.0 and REMOVED in PHP 5.4. Customer has used Register_globals=ON in his code. If you set Register_globals=ON in your code, values submitted through a form, via POST or GET will automatically be accessible via variable in the PHP script named after the name of the input field.
For example:
If you have URL like;........ http://www.xyz.com/var_name.php?user_id=10 and automaticaly you'll have $user_id = 10 in PHP. Customer was using such variables in his SQL queries. In our new Linux server, target PHP verson was set to PHP 5.4 in which Register_globals is removed. Hence, SQL queries could not fatch the passed parameters. As a resolutiuon, we advised customer to emulate register_globals with using extract in global scope like as follows:
extract($_REQUEST); ............OR create an independent function like as follows:
function xyz()
{
foreach ($_REQUEST as $key => $val)
{
}{
global ${$key};
${$key} = $val;
}${$key} = $val;
