This is from php.ini......
; This directive allows you to enable and disable warnings which PHP will issue
; if you pass a value by reference at function call time. Passing values by
; reference at function call time is a deprecated feature which will be removed
; from PHP at some point in the near future. The acceptable method for passing a
; value by reference to a function is by declaring the reference in the functions
; definition, not at call time.
This directive does not disable this feature, it
; only determines whether PHP will warn you about it or not. These warnings
; should enabled in development environments only.
; Default Value: On (Suppress warnings)
; Development Value: Off (Issue warnings)
; Production Value: Off (Issue warnings)
allow_call_time_pass_reference = on
I hope it helps..
Thank you for your help..