<?php

function name_for_id($data, $id) {

  foreach ($data as $value) {

    if ($value['id'] == $id)
      return $value['name'];

  }
}
    $json = '[
        {
            "id":0,
            "name":"N/A"
        },
        {
            "id":1,
            "name":"Ann"
        },
        {
            "id":2,
            "name":"Laf"
        },
        {
            "id":3,
            "name":"Gal"
        },
        {
            "id":4,
            "name":"Twist"
        },
        {
            "id":5,
            "name":"Xin"
        },
        {
            "id":6,
            "name":"Urg"
        },
        {
            "id":7,
            "name":"LeB"
        },
        {
            "id":8,
            "name":"Vlad"
        },
        {
            "id":9,
            "name":"Fid"
        },
        {
            "id":10,
            "name":"Kayl"
        },
        {
            "id":11,
            "name":"MaYi"
        },
        {
            "id":12,
            "name":"Alir"
        },
        {
            "id":13,
            "name":"Ryz"
        },
        {
            "id":14,
            "name":"Sin"
        },
        {
            "id":15,
            "name":"Siv"
        },
        {
            "id":16,
            "name":"Sor"
        },
        {
            "id":17,
            "name":"Tem"
        },
        {
            "id":18,
            "name":"Tris"
        },
        {
            "id":19,
            "name":"Wark"
        },
        {
            "id":20,
            "name":"Nunu"
        },
        {
            "id":21,
            "name":"Fort"
        },
        {
            "id":22,
            "name":"Ashe"
        },
        {
            "id":23,
            "name":"Trynd"
        },
        {
            "id":24,
            "name":"Jax"
        },
        {
            "id":25,
            "name":"Morg"
        },
        {
            "id":26,
            "name":"Zil"
        },
        {
            "id":27,
            "name":"Sing"
        },
        {
            "id":28,
            "name":"Eve"
        }
    ]';
    $data = json_decode($json, true);
    $id = 25;

    echo name_for_id($data, $id);
?>