{"categories":["PHP"],"description":"PHP5\u3067\u3053\u3093\u306a\u4ed5\u69d8\u306b\u5909\u308f\u3063\u3066\u305f\u3089\u3057\u3044\u3002 PHP5\u3067\u306f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u306a\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u7a7a\u3067\u306a\u3044\u3068\u898b\u306a\u3055\u308c\u307e\u3059\u3002 PHP4\u3067\u306f\u3001\u6587\u5b57\u5217 \"0\"\u306f\u7a7a\u3067\u3042\u308b\u3068\u898b\u306a\u3055\u308c\u307e\u3059\u3002 PHP5\u3067\u306eempty\u306e\u52d5\u4f5c \u6b21\u306e\u3088\u3046\u306a\u5024\u306f\u7a7a\u3067\u3042\u308b\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002: \"\" (\u7a7a\u6587\u5b57\u5217) 0 (0 \u306f\u6574\u6570) \"0\" (0\u306f\u6587\u5b57\u5217) NULL FALSE array() (\u7a7a\u306e\u914d\u5217) var $var;(\u5909\u6570\u304c\u5ba3\u8a00\u3055\u308c\u3066\u3044\u308b\u304c\u3001\u30af\u30e9\u30b9\u306e\u4e2d\u3067\u5024\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044) \u5168\u7136\u77e5\u3089\u306a\u304b\u3063\u305f\u3002PHP4\u4f7f\u3063\u3066\u305f\u6642\u306b\u3001empty\u304c\u4f7f\u3048\u306a\u3044\u3082\u3093\u3060\u304b\u3089\u81ea\u524d\u3067\u95a2\u6570\u7528\u610f\u3057\u3066\u30c1\u30a7\u30c3\u30af\u3057\u3066\u305f\u3051\u3069\u305d\u306e\u5fc5\u8981\u304c\u306a\u304f\u306a\u308a\u305d\u3046\u3060\u306a\u3041\u3002","blog_title":"\u8987\u738b\u8272\u3092\u6c42\u3081\u3066","author_name":"ryster","url":"https://ryster.hatenadiary.org/entry/20071012/1192205587","title":"empty\u306e\u52d5\u4f5c\u5909\u308f\u3063\u3066\u305f\u306e\u304b","type":"rich","published":"2007-10-12 01:13:07","blog_url":"https://ryster.hatenadiary.org/","provider_url":"https://hatena.blog","version":"1.0","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fryster.hatenadiary.org%2Fentry%2F20071012%2F1192205587\" title=\"empty\u306e\u52d5\u4f5c\u5909\u308f\u3063\u3066\u305f\u306e\u304b - \u8987\u738b\u8272\u3092\u6c42\u3081\u3066\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_url":"https://blog.hatena.ne.jp/ryster/","provider_name":"Hatena Blog","image_url":null,"width":"100%"}