<?php $data = array ( 1 => array ( 'symbol' => 'salad' ), 2 => array ( 'symbol' => 'wine' ), 3 => array ( 'symbol' => 'beer' ) ); $symbols = array_column($data, 'symbol'); $mapped = array_map(function($e){ return $e . "bar"; },$symbols); $string_from_array = join(", ",$mapped); echo($string_from_array);
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