JSONファイルを読み込んで配列にして返す

from_json.php

<?php
function from_json($filename) {
    if(!file_exists($filename)) {
      throw new Exception($filename.' not found.');
    }
    $json_text = file_get_contents($filename);
    if(!$json_text) {
        throw new Exception('Failed read '.$filename);
    }
    $json = mb_convert_encoding($json_text, 'UTF8', 'ASCII, JIS, UTF-8, EUC-JP,SJIS-WIN');
    return json_decode($json, true);
}
?>