{"id":4824,"date":"2020-07-06T14:00:44","date_gmt":"2020-07-06T05:00:44","guid":{"rendered":"https:\/\/learningbox.co.jp\/?p=4824"},"modified":"2020-07-06T14:00:44","modified_gmt":"2020-07-06T05:00:44","slug":"blog_-database-php","status":"publish","type":"post","link":"https:\/\/learningbox.co.jp\/en\/2020\/07\/06\/blog_-database-php\/","title":{"rendered":"Array a specific column of an associative array retrieved from the database"},"content":{"rendered":"<h1>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u305f\u9023\u60f3\u914d\u5217\u306e\u7279\u5b9a\u306e\u30ab\u30e9\u30e0\u3092\u914d\u5217\u5316<\/h1>\n<p>\u3053\u3093\u306b\u3061\u306f\u3001\u958b\u767a\u306e\u5409\u91ce\u3067\u3059\uff01\u4eca\u56de\u306fDB\u304b\u3089\u53d6\u5f97\u3057\u305f\u9023\u60f3\u914d\u5217\u304b\u3089\u7279\u5b9a\u306e\u30ab\u30e9\u30e0\u3092\u914d\u5217\u5316\u3059\u308b\u65b9\u6cd5\u3092\u3054\u7d39\u4ecb\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p class=\"mokujimidasi\">\u76ee\u6b21\u306f\u3053\u3061\u3089<\/p>\n<ul class=\"mokuji\">\n<li>\uff11. \u30ab\u30e9\u30e0\u3092\u914d\u5217\u5316<\/li>\n<li>\uff12. \u53d6\u5f97\u3059\u308b\u914d\u5217\u306b\u4efb\u610f\u306e\u30ad\u30fc\u540d\u3092\u8a2d\u5b9a\u3059\u308b<\/li>\n<li>\uff13. \u307e\u3068\u3081<\/li>\n<\/ul>\n<h2>\u30ab\u30e9\u30e0\u3092\u914d\u5217\u5316<\/h2>\n<p>DB\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3057\u305f\u5834\u5408\u4ee5\u4e0b\u306e\u5f62\u5f0f\u3067\u30c7\u30fc\u30bf\u304c\u8fd4\u3055\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p class=\"well2\">\n$records = [<br \/>\n\u3000[&#8216;id&#8217; => &#8216;1000&#8217;, &#8216;title&#8217; => &#8216;\u7df4\u7fd2\u554f\u984c&#8217;, &#8216;date&#8217; => &#8216;2020-04-01&#8217;],<br \/>\n\u3000[&#8216;id&#8217; => &#8216;1001&#8217;, &#8216;title&#8217; => &#8216;\u57fa\u672c\u554f\u984c&#8217;, &#8216;date&#8217; => &#8216;2020-05-10&#8217;],<br \/>\n\u3000[&#8216;id&#8217; => &#8216;1002&#8217;, &#8216;title&#8217; => &#8216;\u5fdc\u7528\u554f\u984c&#8217;, &#8216;date&#8217; => &#8216;2020-06-20&#8217;],<br \/>\n];\n<\/p>\n<p>\u3053\u306e\u30c7\u30fc\u30bf\u306etitle\u306e\u307f\u3092\u914d\u5217\u5316\u3057\u305f\u3044\u5834\u5408\u306f\u300carray_column\u95a2\u6570\u300d\u3092\u4f7f\u7528\u3059\u308b\u3068\u4e00\u884c\u3067\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\uff01\u914d\u5217\u306e\u4e2d\u8eab\u306f\u540c\u3058\u3067\u3059\u304c\u3001\u65ad\u7136array_column\u95a2\u6570\u304b\u3089\u914d\u5217\u3092\u4f5c\u308a\u51fa\u3057\u305f\u65b9\u304c\u5206\u304b\u308a\u3084\u3059\u3044\u3067\u3059\u306d\u3002<\/p>\n<p class=\"well2\">\n\/\/ array_column\u95a2\u6570\u3067\u53d6\u5f97<br \/>\n$titleArray = array_column($records, &#8216;title&#8217;);<br \/>\nprint_r($titleArray);<br \/>\n\/\/ \u51fa\u529b\u5185\u5bb9<br \/>\nArray ( [0] => \u7df4\u7fd2\u554f\u984c [1] => \u57fa\u672c\u554f\u984c [2] => \u5fdc\u7528\u554f\u984c )<br \/>\n\/\/ foreach\u3067\u53d6\u5f97<br \/>\n$titleArray = [];<br \/>\nforeach($records as $record){<br \/>\n    $titleArray[] = $record[&#8216;title&#8217;];<br \/>\n}<br \/>\nprint_r($titleArray);<br \/>\n\/\/ \u51fa\u529b\u5185\u5bb9<br \/>\nArray ( [0] => \u7df4\u7fd2\u554f\u984c [1] => \u57fa\u672c\u554f\u984c [2] => \u5fdc\u7528\u554f\u984c )\n<\/p>\n<h2>\u53d6\u5f97\u3059\u308b\u914d\u5217\u306b\u4efb\u610f\u306e\u30ad\u30fc\u540d\u3092\u8a2d\u5b9a\u3059\u308b<\/h2>\n<p>array_column\u95a2\u6570\u306b\u306f\u4ed6\u306b\u3082\u4f7f\u3044\u65b9\u304c\u3042\u308a\u307e\u3059\u3002array_column() \u306f\u3001 \u914d\u5217 input \u306e\u4e2d\u304b\u3089 column_key \u3067\u6307\u5b9a\u3057\u305f\u5358\u4e00\u306e\u30ab\u30e9\u30e0\u306e\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002 \u30aa\u30d7\u30b7\u30e7\u30f3\u3067 index_key \u3082\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002 \u3053\u308c\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001 \u5165\u529b\u914d\u5217\u5185\u306e\u30ab\u30e9\u30e0 index_key \u306e\u5024\u3092\u30ad\u30fc\u3068\u3057\u3001 \u30ab\u30e9\u30e0 column_key \u3092\u5024\u3068\u3057\u305f\u914d\u5217\u304c\u8fd4\u3055\u308c\u307e\u3059\u3002<\/p>\n<p class=\"well2\">\n\/\/ id\u3092\u9023\u60f3\u914d\u5217\u306e\u30ad\u30fc\u540d\u306b\u3059\u308b<br \/>\n$titleArray = array_column($records, &#8216;title&#8217;, &#8216;id&#8217;);<br \/>\nprint_r($titleArray);<br \/>\n\/\/ \u51fa\u529b\u5185\u5bb9<br \/>\nArray ( [1000] => \u7df4\u7fd2\u554f\u984c [1001] => \u57fa\u672c\u554f\u984c [1002] => \u5fdc\u7528\u554f\u984c )<br \/>\n\u7b2c3\u5f15\u6570\u306b$records\u306e\u30ad\u30fc\u540d\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u4efb\u610f\u306e\u30ad\u30fc\u540d\u3092\u8a2d\u5b9a\u3057\u305f\u9023\u60f3\u914d\u5217\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\u3002\n<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u4eca\u56de\u306fDB\u304b\u3089\u53d6\u5f97\u3057\u305f\u9023\u60f3\u914d\u5217\u306e\u7279\u5b9a\u306e\u30ab\u30e9\u30e0\u3092\u914d\u5217\u5316\u3059\u308b\u65b9\u6cd5\u3092\u3054\u7d39\u4ecb\u3055\u305b\u3066\u3044\u305f\u3060\u304d\u307e\u3057\u305f\u3002<br \/>\narray_column\u95a2\u6570\u3092\u4f7f\u3048\u3070\u4e00\u884c\u3067\u914d\u5217\u5316\u51fa\u6765\u308b\u306e\u3067\u3001\u305c\u3072\u4f7f\u3063\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u305f\u9023\u60f3\u914d\u5217\u306e\u7279\u5b9a\u306e\u30ab\u30e9\u30e0\u3092\u914d\u5217\u5316 \u3053\u3093\u306b\u3061\u306f\u3001\u958b\u767a\u306e\u5409\u91ce\u3067\u3059\uff01\u4eca\u56de\u306fDB\u304b\u3089\u53d6\u5f97\u3057\u305f\u9023\u60f3 [&hellip;]","protected":false},"author":22,"featured_media":4842,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_vk_print_noindex":"","sitemap_hide":"","_veu_custom_css":"","veu_display_promotion_alert":"","vkexunit_cta_each_option":"0","footnotes":""},"categories":[7,40],"tags":[],"class_list":["post-4824","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-7","category-40"],"acf":[],"jetpack_featured_media_url":"https:\/\/learningbox.co.jp\/wp-content\/uploads\/2020\/06\/\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9-\u9023\u5408\u914d\u5217.png","jetpack_shortlink":"https:\/\/wp.me\/pgMrZ4-1fO","_links":{"self":[{"href":"https:\/\/learningbox.co.jp\/en\/wp-json\/wp\/v2\/posts\/4824","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/learningbox.co.jp\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/learningbox.co.jp\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/learningbox.co.jp\/en\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/learningbox.co.jp\/en\/wp-json\/wp\/v2\/comments?post=4824"}],"version-history":[{"count":11,"href":"https:\/\/learningbox.co.jp\/en\/wp-json\/wp\/v2\/posts\/4824\/revisions"}],"predecessor-version":[{"id":4899,"href":"https:\/\/learningbox.co.jp\/en\/wp-json\/wp\/v2\/posts\/4824\/revisions\/4899"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/learningbox.co.jp\/en\/wp-json\/wp\/v2\/media\/4842"}],"wp:attachment":[{"href":"https:\/\/learningbox.co.jp\/en\/wp-json\/wp\/v2\/media?parent=4824"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/learningbox.co.jp\/en\/wp-json\/wp\/v2\/categories?post=4824"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/learningbox.co.jp\/en\/wp-json\/wp\/v2\/tags?post=4824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}