json_encode如何防止汉字转义成unicode,json_encodeunicode
json_encode如何防止汉字转义成unicode,json_encodeunicode
众所周知,json_encode通常会把json中的汉字转义成unicode,但是这并不一定是我们想要的。有时候,我们需要获得汉字形式的json字符串,比如需要获得gbk编码的json字符串(只要把汉字形式的字符串转码就可以得到了)。有什么好办法么?
php官方听到了这个需求,并提供了一种可靠的解决方案:JSON_UNESCAPED_UNICODE。这个参数可以保证json_encode不再将汉字转为unicode。
似乎这样就解决了?当我们高高兴兴的用这个参数的时候,发现并没有什么卵用。仔细一看,这个参数只有5.4之后的php支持。那更早期的php怎么办呢?
社区提供了一种方案:
<span>1</span> <span>function</span> my_json_encode(<span>$arr</span><span>){ </span><span>2</span> <span>//</span><span>convmap since 0x80 char codes so it takes all multibyte codes (above ASCII 127). So such characters are being "hidden" from normal json_encoding</span> <span>3</span> <span>array_walk_recursive</span>(<span>$arr</span>, <span>function</span> (&<span>$item</span>, <span>$key</span>) { <span>if</span> (<span>is_string</span>(<span>$item</span>)) <span>$item</span> = mb_encode_numericentity(<span>$item</span>, <span>array</span> (0x80, 0xffff, 0, 0xffff), 'UTF-8'<span>); }); </span><span>4</span> <span>return</span> mb_decode_numericentity(json_encode(<span>$arr</span>), <span>array</span> (0x80, 0xffff, 0, 0xffff), 'UTF-8'<span>); </span><span>5</span> }
不过这种方法只有5.3才支持,因为5.2并不支持匿名函数。至于解决办法?把匿名函数定义一下即可。

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