{"provider_url":"https://hatena.blog","version":"1.0","title":"empty\u3068isset\u306e\u9055\u3044","author_url":"https://blog.hatena.ne.jp/shigemk2/","url":"https://www.shigemk2.com/entry/20120618/1339953291","description":"empty \u306f\u3001\u5909\u6570\u304c\u7a7a\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u691c\u67fb\u3059\u308b\u3002 isset\u306f\u3001var \u304c\u5b58\u5728\u3057\u3066 NULL \u4ee5\u5916\u306e\u5024\u3092\u3068\u308c\u3070 TRUE\u3001 \u305d\u3046\u3067\u306a\u3051\u308c\u3070 FALSE \u3092\u8fd4\u3059\u3002 \u3064\u307e\u308a\u3001isset\u306f\u7a7a\u6587\u5b57\u5217\u3067\u3082TRUE\u3092\u8fd4\u3057\u307e\u3059\u3002 <?php $search_array = array('first' => null, 'second' => ''); if(empty($search_array['first'])) print_r(\"hoge1\\n\"); if(isset($search_array['first'])) print_r(\"hoge2\\n\"); if(empty($search_arra\u2026","height":"190","provider_name":"Hatena Blog","categories":["PHP"],"published":"2012-06-18 02:14:51","author_name":"shigemk2","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2F20120618%2F1339953291\" title=\"empty\u3068isset\u306e\u9055\u3044 - by shigemk2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"by shigemk2","type":"rich","width":"100%","blog_url":"https://www.shigemk2.com/","image_url":null}