Online PHP editor | refs for kb95I

<?php //I set up 2 arrays, the $idArray to use in the 2nd API call and $testNull $idArray = array(); $testNull = array(); $results = [ ['id'=>1],['id'=>2],['id'=>3],['id'=>4], ['id'=>5],['id'=>6],['id'=>1],['id'=>8], ['id'=>9],['id'=>10],['id'=>11],['id'=>12], ['id'=>13],['id'=>14],['id'=>15],['id'=>16], ['id'=>17],['id'=>18],['id'=>19],['id'=>20], ]; //the JSON response is decoded previously and here I go through the first 20 results for($j = 0; $j < 20; $j++){ //Here I put the ID of each venue into $busID $busID = $results[$j]['id']; //In case the result is null I have set up this if statement if(!empty($busID)){ //This is echoing out the IDs of the venues correctly echo $busID; //and here the problem lies - just can't get the IDs in $idArray array_push($idArray, $busID); }else{ //I set this up just to test NUll responses from the 1st API call. array_push($testNull, $busID); } } var_dump($idArray); var_dump($testNull);