php - Session array with productids -


i'm adding product ids session array with:

if (isset($_get["add"]) && (int)$_get["add"]>0) { $_session['products'][] = $_get["add"]; }

how loop array , add class products ids in array?

what this:

... $_session['products'][$_get["add"]] = true ; ...

then ask 

if ($_session['products']) { ... }

or in loop

foreach ($_session['products'] $id=>$isset) { // ... }

btw shorter cond:

if (($_get["add"]*1)>0)

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