日本語が読めるjsonエンコード

json_jap.php

<?php
function json_jap($str){
	//"\u3042\u3044\u3046\u3048\u304a" → "あいうえお"
	$str=preg_replace_callback('{\\\\u([0-9a-f]{4})}',function($m){return mb_convert_encoding(hex2bin($m[1]),'UTF-8','UTF-16');},$str);
	$str=str_replace(['\/','&gt;','&lt;','&apos;','&amp;'],['/','>','<','\'','&'],$str);
	return $str;
}
?>