php - eTrade array parameter with variable inside array -

php - eTrade array parameter with variable inside array -

in etrade php api allow ability fetch stocks symbol. works when manually typing in symbols array:

$request_params->__set('symbollist', array('aal', 'aapl', 'amzn'));

what have variable same exact string like:

$symbols = "'aal', 'aapl', 'amzn'"; $request_params->__set('symbollist', array($symbols));

but returns nothing. suggestions?

try instead:

$symbols = "'aal', 'aapl', 'amzn'"; $request_params->__set('symbollist', explode(', ', $symbols));

php arrays