{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhnw.hatenablog.com%2Fentry%2F20180414\" title=\"PHP\u306eis_numeric\u95a2\u6570\u306f\u4f7f\u3046\u3079\u304d\u3067\u306a\u3044\u3068\u3044\u3046\u8a71 - hnw\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://hnw.hatenablog.com/entry/20180414","height":"190","provider_name":"Hatena Blog","title":"PHP\u306eis_numeric\u95a2\u6570\u306f\u4f7f\u3046\u3079\u304d\u3067\u306a\u3044\u3068\u3044\u3046\u8a71","version":"1.0","author_url":"https://blog.hatena.ne.jp/hnw/","blog_title":"hnw\u306e\u65e5\u8a18","width":"100%","description":"\u672c\u7a3f\u306f\u79c1\u304c\u524d\u8077\u306e\u6280\u8853\u30d6\u30ed\u30b0\u3067\u57f7\u7b46\u3057\u305f\u8a18\u4e8b\u300c\u305d\u306eis_numeric()\u306f\u9069\u5207\u3067\u3059\u304b\uff1f\u300d\u3092\u6539\u984c\u30fb\u518d\u7de8\u96c6\u3057\u3066\u63b2\u8f09\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u524d\u8077\u306b\u306f\u8a31\u53ef\u3092\u53d6\u3063\u3066\u3042\u308a\u307e\u3059*1\u3002 \u672c\u7a3f\u3067\u306fPHP\u306e\u95a2\u6570is_numeric()\u306e\u4f7f\u3044\u3069\u3053\u308d\u306b\u3064\u3044\u3066\u554f\u984c\u63d0\u8d77\u3092\u3057\u3066\u307f\u307e\u3059\u3002 is_numeric\u95a2\u6570\u3068\u306f \u3055\u3066\u3001\u307e\u305a\u306fis_numeric()\u306e\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u30de\u30cb\u30e5\u30a2\u30eb\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002 bool is_numeric ( mixed $var ) \u6307\u5b9a\u3057\u305f\u5909\u6570\u304c\u6570\u5024\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u8abf\u3079\u307e\u3059\u3002\u6570\u5024\u5f62\u5f0f\u306e\u6587\u5b57\u5217\u306f\u4ee5\u4e0b\u306e\u8981\u7d20\u304b\u3089 \u306a\u308a\u307e\u3059\u3002\uff08\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\uff09\u7b26\u53f7\u3001\u4efb\u610f\u306e\u6570\u306e\u6570\u5b57\u3001\uff08\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\uff09\u5c0f\u6570\u90e8\u3001 \u305d\u3057\u3066\uff08\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\uff09\u6307\u6570\u90e8\u3002\u2026","type":"rich","published":"2018-04-14 00:00:00","author_name":"hnw","image_url":null,"blog_url":"https://hnw.hatenablog.com/","provider_url":"https://hatena.blog","categories":["PHP"]}