{"id":4670,"date":"2022-09-18T09:53:22","date_gmt":"2022-09-18T00:53:22","guid":{"rendered":"https:\/\/www.wetch.co.jp\/?p=4670"},"modified":"2022-09-18T09:53:23","modified_gmt":"2022-09-18T00:53:23","slug":"%e4%bb%8a%e3%81%95%e3%82%89json%e3%81%ae%e4%bb%95%e6%a7%98%e3%82%92%e5%86%8d%e8%aa%8d%e8%ad%98%e3%81%97%e3%81%9f%e8%a9%b1","status":"publish","type":"post","link":"https:\/\/www.wetch.co.jp\/note\/%e4%bb%8a%e3%81%95%e3%82%89json%e3%81%ae%e4%bb%95%e6%a7%98%e3%82%92%e5%86%8d%e8%aa%8d%e8%ad%98%e3%81%97%e3%81%9f%e8%a9%b1\/","title":{"rendered":"\u4eca\u3055\u3089JSON\u306e\u4ed5\u69d8\u3092\u518d\u8a8d\u8b58\u3057\u305f\u8a71"},"content":{"rendered":"\n

Web\u7cfb\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u3057\u3066\u3044\u308b\u3068\u69cb\u9020\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\uff08\u914d\u5217\u7b49\uff09\u3092JSON\u306b\u5909\u63db\u3057\u3066\u6271\u3046\u30b1\u30fc\u30b9\u304c\u7d50\u69cb\u3042\u308a\u307e\u3059\u3002
\u305f\u3060\u3001JSON\u3092\u76f4\u63a5\u66f8\u304f\u3068\u3044\u3046\u3053\u3068\u306f\u7a00\u3067\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u3088\u308b\u30a8\u30f3\u30b3\u30fc\u30c9\u7d50\u679c\u304c\u30ed\u30b0\u3084DB\u306b\u767b\u9332\u3055\u308c\u305f\u72b6\u614b\u3092\u76ee\u8996\u3067\u78ba\u8a8d\u3059\u308b\u3088\u3046\u306a\u6642\u3057\u304b\u89e6\u308c\u308b\u6a5f\u4f1a\u306f\u306a\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

\u3057\u304b\u3057\u3001\u5148\u65e5\u3068\u3042\u308b\u4e8b\u60c5\u3067DB\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308bJSON\u30c7\u30fc\u30bf\u3092\u5225\u306e\u5185\u5bb9\u306b\u66f8\u304d\u63db\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3057\u3066\u3001\u4e00\u898b\u6b63\u3057\u305d\u3046\u306b\u5909\u66f4\u3057\u3066\u307f\u305f\u3082\u306e\u306e\u671f\u5f85\u3057\u305f\u7d50\u679c\u304c\u5f97\u3089\u308c\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3057\u305f\u3002
\u5f53\u7136\u306a\u304c\u3089\u539f\u56e0\u306fJSON\u306e\u66f8\u5f0f\u304c\u9593\u9055\u3063\u3066\u3044\u305f\u3060\u3051\u3060\u3063\u305f\u306e\u3067\u3059\u304c\u3001\u6539\u3081\u3066JSON\u306e\u4ed5\u69d8\u306b\u95a2\u3057\u3066\u6b63\u78ba\u306b\u628a\u63e1\u3057\u3066\u3044\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u3092\u601d\u3044\u77e5\u3063\u305f\u306e\u3067\u3001\u4eca\u56de\u306f\u305d\u306e\u8fba\u3092\u66f8\u3044\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

\u305d\u3082\u305d\u3082JSON\u3068\u306f<\/h2>\n\n\n\n

JSON\u306e\u4ed5\u69d8\u4e91\u3005\u4ee5\u524d\u306b\u3001\u305d\u3082\u305d\u3082JSON\u3063\u3066\u4f55\uff1f\u3068\u3044\u3046\u3053\u3068\u81ea\u4f53\u8003\u3048\u305f\u3053\u3068\u304c\u306a\u304b\u3063\u305f\u306e\u3067\u78ba\u8a8d\u3057\u3066\u307f\u305f\u3068\u3053\u308d\u300cJavaScript Object Notation<\/strong>\u300d\u3068\u3044\u3046\u610f\u5473\u3060\u3063\u305f\u3093\u3067\u3059\u306d\u3002<\/p>\n\n\n\n

\u500b\u4eba\u7684\u306b\u306f\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u30a8\u30f3\u30b8\u30cb\u30a2\u306a\u306e\u3067\u5f53\u7136\u306a\u3089\u304c\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\uff08\u3064\u307e\u308a\u306fJavaScript\uff09\u3068\u306e\u9593\u3067JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306e\u9001\u53d7\u4fe1\u3092\u884c\u3046\u3068\u8a00\u3046\u3053\u3068\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u5148\u306b\u66f8\u3044\u305f\u3088\u3046\u306b\u69cb\u9020\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092DB\u306b\u767b\u9332\u3059\u308b\u3088\u3046\u306a\u30b1\u30fc\u30b9\u3067\u3082JSON\u3092\u4f7f\u3046\u306e\u3067\u3001\u3042\u307e\u308aJavaScript\u306b\u7d61\u3081\u3066\u8003\u3048\u305f\u3053\u3068\u306f\u306a\u304b\u3063\u305f\u306e\u3067\u3059\u304c\u3002<\/p>\n\n\n\n

JSON\u306e\u6ce8\u610f\u3059\u3079\u304d\u4ed5\u69d8<\/h2>\n\n\n\n

JSON\u306e\u4ed5\u69d8\u5168\u822c\u306b\u95a2\u3057\u3066\u306fGoogle\u5148\u751f\u306b\u805e\u3044\u3066\u3082\u3089\u3046\u3068\u3057\u3066\u3001\u3053\u3053\u3067\u306f\u7279\u306b\u95a2\u9023\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\uff08PHP, JavaScript\uff09\u306e\u4ed5\u69d8\u3068\u306e\u9055\u3044\u3067\u9593\u9055\u3044\u6613\u3044\u3082\u306e\u3092\u4e0a\u3052\u3066\u304a\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

\u6587\u5b57\u5217\u306f\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3067\u56f2\u3080<\/h4>\n\n\n\n

\u4eca\u56de\u3001\u624b\u66f8\u304d\u3067JSON\u3092\u66f8\u304d\u63db\u3048\u305f\u969b\u306e\u30df\u30b9\u304c\u3053\u308c\u3060\u3063\u305f\u306e\u3067\u3059\u304c\u3001JSON\u5185\u3067\u306e\u6587\u5b57\u5217\u306f\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3067\u56f2\u3080\u5fc5\u8981\u304c\u3042\u308a\u3001\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u30c0\u30e1\u306a\u3093\u3067\u3059\u306d\u3002<\/p>\n\n\n\n

PHP\u3084JavaScript\u3067\u306f\u6587\u5b57\u5217\u3092\u8868\u8a18\u3059\u308b\u5834\u5408\u306f\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3067\u3082\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3082\u554f\u984c\u306a\u3044\u306e\u3067\uff08\u82e5\u5e72\u306e\u9055\u3044\u306f\u3042\u308a\u307e\u3059\u304c\uff09\u3001\u305d\u306e\u611f\u899a\u3067\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u3046\u3068\u30cf\u30de\u3063\u3066\u3057\u307e\u3046\u3068\u3044\u3046\u8a71\u3067\u3059\u3002<\/p>\n\n\n\n

true, false, null \u306f\u5c0f\u6587\u5b57\u3067\u66f8\u304f<\/h4>\n\n\n\n

PHP\u306e\u5834\u5408\u3001true, false, null\u306f\u5927\u6587\u5b57\u3067\u66f8\u3044\u3066\u3082\u5c0f\u6587\u5b57\u3067\u66f8\u3044\u3066\u3082\uff08\u52a0\u3048\u3066\u30a2\u30c3\u30d1\u30fc\u30ad\u30e3\u30e1\u30ebTrue, False, Null\u3067\u66f8\u3044\u3066\u3082\uff09\u554f\u984c\u306a\u3044\u3067\u3059\u304c\u3001JSON\u3067\u306f\u5c0f\u6587\u5b57\u3067\u66f8\u304b\u306a\u3044\u3068\u30c0\u30e1\u3068\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n

\u914d\u5217\u306f\u89d2\u304b\u3063\u3053\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff08\u9023\u60f3\u914d\u5217\uff09\u306f\u6ce2\u304b\u3063\u3053\u3067\u56f2\u3080<\/h4>\n\n\n\n

JavaScript\u7684\u306b\u306f\u5f53\u7136\u306a\u306e\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001PHP\u3067\u306f\u666e\u901a\u306e\u914d\u5217\u3067\u3082\u9023\u60f3\u914d\u5217\u3067\u3082\u89d2\u304b\u3063\u3053\u3067\u56f2\u3080\u306e\u3067\u3001PHP\u4f7f\u3044\u306f\u6c17\u3092\u3064\u3051\u305f\u65b9\u304c\u826f\u3044\u3067\u3059\u3002<\/p>\n\n\n\n

json_decode\u306e\u4ed5\u69d8<\/h2>\n\n\n\n

PHP\u306b\u304a\u3044\u3066JSON\u306e\u66f8\u5f0f\u4e0d\u6b63\u306b\u6c17\u3065\u304d\u96e3\u3044\u8981\u56e0\u3068\u3057\u3066\u306fjson_decode\u306e\u4ed5\u69d8\u3082\u95a2\u4fc2\u3057\u3066\u3044\u308b\u3088\u3046\u306b\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

json_decode\u306f\u6587\u5b57\u901a\u308aJSON\u3092\u30c7\u30b3\u30fc\u30c9\u3059\u308bPHP\u306e\u95a2\u6570\u3067\u3059\u304c\u3001\u30a8\u30e9\u30fc\u306e\u5834\u5408\u306f\u57fa\u672c\u7684\u306b\u306fnull\u3092\u8fd4\u3059\u4ed5\u69d8\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u5f53\u7136\u306a\u304c\u3089\u30c7\u30b3\u30fc\u30c9\u5bfe\u8c61\u3068\u3057\u3066\u6307\u5b9a\u3055\u308c\u305fJSON\u306e\u66f8\u5f0f\u306b\u4e0d\u6b63\u304c\u3042\u3063\u305f\u5834\u5408\u3082null\u304c\u5e30\u308a\u307e\u3059\u3002
\u500b\u4eba\u7684\u306b\u306f\u3053\u3053\u304c\u7591\u554f\u3067\u3059\u3002<\/p>\n\n\n\n

json_decode\u3068\u5bfe\u3092\u306a\u3059json_encode\u3067null\u3092\u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b\u3068\u3001\u623b\u308a\u5024\u306f\u6587\u5b57\u5217”null”\u3067\u3059\u3002
\u4e00\u65b9\u3067\u6587\u5b57\u5217”null”\u3092json_decode\u3067\u30c7\u30b3\u30fc\u30c9\u3059\u308b\u3068null\u304c\u8fd4\u3055\u308c\u307e\u3059\u3002
\u3053\u306e\u30a8\u30f3\u30b3\u30fc\u30c9\u30fb\u30c7\u30b3\u30fc\u30c9\u7d50\u679c\u306b\u77db\u76fe\u306f\u3042\u308a\u307e\u305b\u3093\u3002
\u3057\u304b\u3057\u3001\u3053\u308c\u306fjson_decode\u3088\u308b\u6b63\u5f53\u306a\u30c7\u30b3\u30fc\u30c9\u7d50\u679c\u3068\u3057\u3066null\u304c\u8fd4\u3055\u308c\u308b\u30b1\u30fc\u30b9\u304c\u3042\u308b\u3068\u8a00\u3046\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002
\u3068\u306a\u308b\u3068\u3001\u5358\u7d14\u306bjson_decode\u306e\u623b\u308a\u5024\u304cnull\u3060\u3063\u305f\u304b\u3089\u3068\u8a00\u3063\u3066\u30a8\u30e9\u30fc\u6271\u3044\u3059\u308b\u8a33\u306b\u306f\u3044\u304b\u306a\u3044\u3068\u8a00\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\u5b9f\u306e\u3068\u3053\u308d\u3001json_decode\u306b\u3088\u308b\u6b63\u5f53\u306a\u30c7\u30b3\u30fc\u30c9\u7d50\u679c\u3068\u3057\u3066null\u304c\u8fd4\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308b\u3053\u3068\u306f\u8a8d\u8b58\u3057\u3066\u3044\u305f\u306e\u3067\u3001json_decode\u306e\u51e6\u7406\u5185\u3067\u30a8\u30e9\u30fc\u3092\u691c\u51fa\u3057\u305f\u5834\u5408\u306f\u4f8b\u5916\u304c\u6295\u3052\u3089\u308c\u308b\u3082\u306e\u3068\u52dd\u624b\u306b\u601d\u3063\u3066\u3044\u307e\u3057\u305f\u3002
\u8a00\u3044\u63db\u3048\u308c\u3070\u3001json_decode\u306e\u3088\u3046\u306bnull\u3084false\u306e\u3088\u3046\u306a\u4e00\u822c\u7684\u306b\u306f\u30a8\u30e9\u30fc\u3092\u610f\u5473\u3059\u308b\u5024\u3092\u6b63\u5f53\u306a\u623b\u308a\u5024\u3068\u3057\u3066\u8fd4\u3059\u5834\u5408\u304c\u3042\u308b\u95a2\u6570\u3067\u306f\u3001\u30a8\u30e9\u30fc\u767a\u751f\u3092\u901a\u77e5\u3059\u308b\u305f\u3081\u306b\u306f\u5f53\u7136\u306e\u3054\u3068\u304f\u4f8b\u5916\u304c\u6295\u3052\u3089\u308c\u308b\u3082\u306e\u3068\u601d\u3063\u3066\u3044\u307e\u3057\u305f\u3002
\u3088\u3063\u3066\u3001\u4eca\u56de\u554f\u984c\u3068\u306a\u3063\u305fJSON\u306e\u51e6\u7406\u306b\u304a\u3044\u3066\u306f\u3001\u66f8\u5f0f\u306b\u554f\u984c\u304c\u3042\u3063\u3066null\u304c\u8fd4\u3055\u308c\u305f\u5834\u5408\u3067\u3082\u305d\u306enull\u3092\u6b63\u5f53\u306a\u30c7\u30b3\u30fc\u30c9\u7d50\u679c\u3068\u3057\u3066\u6271\u3046\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u305f\u305f\u3081\u30a8\u30e9\u30fc\u306b\u306f\u306a\u3089\u305a\u3001\u554f\u984c\u306b\u6c17\u3065\u304d\u96e3\u304b\u3063\u305f\u3068\u3044\u3046\u72b6\u6cc1\u3067\u3057\u305f\u3002<\/p>\n\n\n\n

PHP7.3.0\u4ee5\u964d\u3067\u3042\u308c\u3070\u3001json_decode\u306e\u7b2c\u56db\u5f15\u6570\u306bJSON_THROW_ON_ERROR\u306a\u308b\u30d5\u30e9\u30b0\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u30a8\u30e9\u30fc\u767a\u751f\u6642\u306b\u4f8b\u5916\u3092\u6295\u3052\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002
\u3053\u306e\u4f8b\u5916\u3092\u6295\u3052\u308b\u4ed5\u69d8\u3092\u30c7\u30d5\u30a9\u30eb\u30c8\u306b\u3057\u3066\u3082\u3089\u3063\u305f\u65b9\u304c\u500b\u4eba\u7684\u306a\u30d5\u30a3\u30fc\u30ea\u30f3\u30b0\u306b\u306f\u5408\u3046\u306e\u3067\u3059\u304c\u3001\u3069\u3046\u3067\u3057\u3087\u3046\uff1f<\/p>\n\n\n\n

\u6240\u611f<\/h2>\n\n\n\n

\u7d50\u5c40\u306e\u3068\u3053\u308d\u306fJSON\u306e\u66f8\u5f0f\u306b\u3057\u308djson_decode\u306e\u4ed5\u69d8\u306b\u3057\u308d\u3001\u3057\u3063\u304b\u308a\u78ba\u8a8d\u305b\u305a\u306b\u4f7f\u3063\u305f\u3053\u3068\u304c\u6839\u672c\u7684\u306a\u554f\u984c\u3067\u3059\u3002
\u305f\u3060\u3001\u3082\u3068\u3082\u3068\u7d1b\u3089\u308f\u3057\u3044\u4ed5\u69d8\u3067\u306a\u3051\u308c\u3070\u52d8\u3068\u7d4c\u9a13\u30d9\u30fc\u30b9\u3067\u3082\u4f7f\u3048\u3066\u3044\u305f\u3067\u3042\u308d\u3046\u3068\u601d\u3046\u90e8\u5206\u3082\u3042\u308a\u3001\u6b63\u76f4\u300c\u7f60\u306b\u30cf\u30de\u3063\u305f\u300d\u611f\u3082\u306a\u304d\u306b\u3057\u3082\u3042\u3089\u305a\u3067\u3059\u3002<\/p>\n\n\n\n

\u81ea\u5206\u306e\u5148\u5165\u89b3\u3092\u3069\u308c\u3060\u3051\u7591\u3048\u308b\u304b\u3068\u3044\u3046\u8a71\u304b\u3068\u3082\u601d\u3044\u307e\u3059\u304c\u3001\u305d\u308c\u304c\u96e3\u3057\u3044\u3093\u3067\u3059\u3051\u3069\u306d\u2026<\/p>\n\n\n\n



<\/p>\n","protected":false},"excerpt":{"rendered":"

Web\u7cfb\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u3057\u3066\u3044\u308b\u3068\u69cb\u9020\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\uff08\u914d\u5217\u7b49\uff09\u3092JSON\u306b\u5909\u63db\u3057\u3066\u6271\u3046\u30b1\u30fc\u30b9\u304c\u7d50\u69cb\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3001JSON\u3092\u76f4\u63a5\u66f8\u304f\u3068\u3044\u3046\u3053\u3068\u306f\u7a00\u3067\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u3088\u308b\u30a8\u30f3\u30b3\u30fc\u30c9\u7d50\u679c\u304c\u30ed\u30b0\u3084DB\u306b\u767b\u9332\u3055\u308c\u305f\u72b6\u614b\u3092\u76ee\u8996\u3067\u78ba\u8a8d […]<\/p>\n","protected":false},"author":6,"featured_media":4685,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_wp_rev_ctl_limit":""},"categories":[210],"tags":[],"class_list":["post-4670","post","type-post","status-publish","format-standard","has-post-thumbnail","category-210"],"_links":{"self":[{"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/posts\/4670","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/comments?post=4670"}],"version-history":[{"count":0,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/posts\/4670\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/media\/4685"}],"wp:attachment":[{"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/media?parent=4670"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/categories?post=4670"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/tags?post=4670"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}