{"provider_url":"https://hatena.blog","url":"https://www.shigemk2.com/entry/20120121/1327155792","image_url":null,"title":"unset","author_name":"shigemk2","height":"190","width":"100%","author_url":"https://blog.hatena.ne.jp/shigemk2/","provider_name":"Hatena Blog","version":"1.0","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2F20120121%2F1327155792\" title=\"unset - 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_url":"https://www.shigemk2.com/","blog_title":"by shigemk2","published":"2012-01-21 23:23:12","categories":["php"],"description":"PHP: unset - Manual void unset ( mixed $var [, mixed $... ] ) unset() \u306f\u6307\u5b9a\u3057\u305f\u5909\u6570\u3092\u7834\u68c4\u3059\u308b\u3002\u914d\u5217\u3092unset\u3067\u7834\u68c4\u3059\u308b <?php $arr = array( 1, 2, 3, 4 ); unset( $arr[0] ); // \u914d\u5217\u306e\u8981\u7d20[0]\u3092\u7834\u68c4 unset( $arr ); // \u914d\u5217\u5168\u4f53\u3092\u7834\u68c4 ?>"}