<?php $filteredZips='[ { "id": 21, "distance": "0" }, { "id": 20, "distance": "3.9399923305414037" }, { "id": 29, "distance": "8.33045537474091" } ]'; $filteredZipsarr = json_decode($filteredZips,true); $id = array_column($filteredZipsarr, "id"); Var_dump($id);
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