Online PHP editor | rfc for 5Rp9K

@ 2019-10-30T06:19:18Z

<?php
$json = '{
  "response": [
    {
      "flight": {
        "number": "6204",
        "iata_number": "HV6204",
        "icao_number": "TRA6204"
      }
    },
    {
      "flight": {
        "number": "7012",
        "iata_number": "TB7012",
        "icao_number": "JAF7012"
      }
    },
    {
      "flight": {
        "number": "6652",
        "iata_number": "HV6652",
        "icao_number": "TRA6652"
      }
    },
    {
      "flight": {
        "number": "1925",
        "iata_number": "W61925",
        "icao_number": "WZZ1925"
      }
    },
    {
      "flight": {
        "number": "5075",
        "iata_number": "W65075",
        "icao_number": "WZZ5075"
      }
    },
    {
      "flight": {
        "number": "4289",
        "iata_number": "W64289",
        "icao_number": "WZZ4289"
      }
    },
    {
      "flight": {
        "number": "7861",
        "iata_number": "W67861",
        "icao_number": "WZZ7861"
      }
    },
    {
      "flight": {
        "number": "3066",
        "iata_number": "FR3066",
        "icao_number": "RYR3066"
      }
    }
  ]
}';
$jarr = json_decode($json, true);
array_walk_recursive($jarr, function($v, $k) use (&$flights){
  if($k == 'iata_number') $flights[] = $v;
});
print_r($flights);

Output for git.master, git.master_jit, rfc.property-hooks: Array ( [0] => HV6204 [1] => TB7012 [2] => HV6652 [3] => W61925 [4] => W65075 [5] => W64289 [6] => W67861 [7] => FR3066 )

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2020-03-21 RFC: Is_Literal - declined
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2018-06-15 Typed Properties v2 - implemented in PHP 7.4
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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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