php - How to quickly check what variables exist from a bunch of vars? -


if have 10 variables set, other times unset, there quick way echo ones exist without throwing exception? these vars come user input.

i write 

if ($var_1 != null) { echo $var_1; } if ($var_2 != null) { echo $var_2; } if ($var_3 != null) { echo $var_3; } if ($var_other_1 != null) { echo $var_other_1 ; } if ($var_other_2 != null) { echo $var_other_2 ; }

etc.. there more quicker way?

compact function you


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