{"id":4260,"date":"2016-05-24T10:00:18","date_gmt":"2016-05-24T01:00:18","guid":{"rendered":"http:\/\/inter-arteq.com\/?p=4260"},"modified":"2022-03-13T14:38:10","modified_gmt":"2022-03-13T05:38:10","slug":"wordpress-how-to-create-custom-field-with-function-php","status":"publish","type":"post","link":"http:\/\/cms.inter-arteq.com\/wordpress-how-to-create-custom-field-with-function-php\/","title":{"rendered":"[WordPress] functions.php\u3067\u30ab\u30b9\u30bf\u30e0\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u56fa\u5b9a\u3055\u305b\u308b\u65b9\u6cd5"},"content":{"rendered":"\n<p>WordPress\u306e\u30ab\u30b9\u30bf\u30e0\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u4f7f\u3044\u306b\u304f\u3044\u306e\u3067\u3001\u305d\u308c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306e\u69d8\u3005\u306a\u30d7\u30e9\u30b0\u30a4\u30f3\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3060\u3001\u3053\u308c\u3089\u3092\u4f7f\u3046\u3068\u3001\u958b\u767a\u74b0\u5883\u3067\u69cb\u7bc9\u3057\u305f\u3042\u3068\u3001\u672c\u756a\u74b0\u5883\u306b\u79fb\u3059\u3068\u304d\u3001\u518d\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u500b\u4eba\u7684\u306b\u3001WordPress\u306f\u51fa\u6765\u308b\u9650\u308a\u30c6\u30fc\u30de\u3067\u5b8c\u7d50\u3055\u305b\u3066\u3001\u30b5\u30fc\u30d0\u4e0a\u3067WordPress\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u3001\u30c6\u30fc\u30de\u3060\u3051\u30c7\u30d7\u30ed\u30a4\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u306e\u304c\u597d\u304d\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3053\u3067\u3001WordPress\u306e\u30ab\u30b9\u30bf\u30e0\u30d5\u30a3\u30fc\u30eb\u30c9\u3092functions.php\u3067\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u307e\u3068\u3081\u3066\u304a\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_69_1 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\">\u76ee\u6b21<\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"http:\/\/cms.inter-arteq.com\/wordpress-how-to-create-custom-field-with-function-php\/#%E3%82%84%E3%82%8A%E6%96%B9\" title=\"\u3084\u308a\u65b9\">\u3084\u308a\u65b9<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"http:\/\/cms.inter-arteq.com\/wordpress-how-to-create-custom-field-with-function-php\/#%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%82%92%E5%88%86%E3%81%91%E3%82%8B\" title=\"\u30d5\u30a1\u30a4\u30eb\u3092\u5206\u3051\u308b\">\u30d5\u30a1\u30a4\u30eb\u3092\u5206\u3051\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a 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title=\"\u753b\u9762\u306b\u8868\u793a\u3059\u308b\u3088\u3046\u306b\u30d5\u30c3\u30af\u3092\u4f5c\u6210\">\u753b\u9762\u306b\u8868\u793a\u3059\u308b\u3088\u3046\u306b\u30d5\u30c3\u30af\u3092\u4f5c\u6210<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"http:\/\/cms.inter-arteq.com\/wordpress-how-to-create-custom-field-with-function-php\/#%E3%83%9C%E3%83%83%E3%82%AF%E3%82%B9%E3%82%92%E4%BD%9C%E6%88%90\" title=\"\u30dc\u30c3\u30af\u30b9\u3092\u4f5c\u6210\">\u30dc\u30c3\u30af\u30b9\u3092\u4f5c\u6210<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"http:\/\/cms.inter-arteq.com\/wordpress-how-to-create-custom-field-with-function-php\/#HTML%E3%82%92%E5%87%BA%E5%8A%9B\" title=\"HTML\u3092\u51fa\u529b\">HTML\u3092\u51fa\u529b<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"http:\/\/cms.inter-arteq.com\/wordpress-how-to-create-custom-field-with-function-php\/#%E4%BF%9D%E5%AD%98%E3%81%99%E3%82%8B%E3%81%9F%E3%82%81%E3%81%AE%E3%82%B3%E3%83%BC%E3%83%89%E3%82%92%E8%A8%98%E8%BF%B0\" title=\"\u4fdd\u5b58\u3059\u308b\u305f\u3081\u306e\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0\">\u4fdd\u5b58\u3059\u308b\u305f\u3081\u306e\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"http:\/\/cms.inter-arteq.com\/wordpress-how-to-create-custom-field-with-function-php\/#%E6%8A%95%E7%A8%BF%E3%81%95%E3%82%8C%E3%81%9F%E6%99%82%E3%81%AE%E3%83%95%E3%83%83%E3%82%AF%E3%82%92%E4%BD%9C%E6%88%90\" title=\"\u6295\u7a3f\u3055\u308c\u305f\u6642\u306e\u30d5\u30c3\u30af\u3092\u4f5c\u6210\">\u6295\u7a3f\u3055\u308c\u305f\u6642\u306e\u30d5\u30c3\u30af\u3092\u4f5c\u6210<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"http:\/\/cms.inter-arteq.com\/wordpress-how-to-create-custom-field-with-function-php\/#%E3%82%AB%E3%82%B9%E3%82%BF%E3%83%A0%E3%83%95%E3%82%A3%E3%83%BC%E3%83%AB%E3%83%89%E3%82%92%E4%BF%9D%E5%AD%98\" title=\"\u30ab\u30b9\u30bf\u30e0\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u4fdd\u5b58\">\u30ab\u30b9\u30bf\u30e0\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u4fdd\u5b58<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"http:\/\/cms.inter-arteq.com\/wordpress-how-to-create-custom-field-with-function-php\/#%E3%81%BE%E3%81%A8%E3%82%81\" title=\"\u307e\u3068\u3081\">\u307e\u3068\u3081<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%82%84%E3%82%8A%E6%96%B9\"><\/span>\u3084\u308a\u65b9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30d5\u30a9\u30fc\u30e0\u3092\u4f5c\u3063\u3066\u3044\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30d5\u30a3\u30fc\u30eb\u30c9\u540d<\/th><th>\u30bf\u30a4\u30d7<\/th><\/tr><\/thead><tbody><tr><td>composer<\/td><td>text<\/td><\/tr><tr><td>lyrics<\/td><td>textarea<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%82%92%E5%88%86%E3%81%91%E3%82%8B\"><\/span>\u30d5\u30a1\u30a4\u30eb\u3092\u5206\u3051\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30ab\u30b9\u30bf\u30e0\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u4f5c\u308d\u3046\u3068\u3059\u308b\u3068\u3001\u305d\u308c\u306a\u308a\u306b\u30b3\u30fc\u30c9\u306e\u884c\u6570\u304c\u5897\u3048\u308b\u306e\u3067\u3001functions.php\u3067\u306f<code>include<\/code>\u5206\u3060\u3051\u3092\u66f8\u3044\u3066\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u5206\u3051\u3066\u3057\u307e\u3046\u306e\u304c\u3044\u3044\u3068\u601d\u3044\u307e\u3059\u3002<br> \u4f8b)<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-php\" data-file=\"wp-content\/themes\/mytheme\/function.php\" data-lang=\"PHP\"><code>&lt;?php\ninclude(&#39;admin\/custom_field.php&#39;);<\/code><\/pre><\/div>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-php\" data-file=\"wp-content\/themes\/mytheme\/admin\/custom_field.php\" data-lang=\"PHP\"><code>&lt;?php\n\/\/ \u3053\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u30ab\u30b9\u30bf\u30e0\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u95a2\u308f\u308b\u8a18\u8ff0\u3092\u66f8\u3044\u3066\u3044\u304f\u3002<\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%82%AB%E3%82%B9%E3%82%BF%E3%83%A0%E3%83%95%E3%82%A3%E3%83%BC%E3%83%AB%E3%83%89%E3%81%AE%E3%83%95%E3%82%A9%E3%83%BC%E3%83%A0%E3%82%92%E4%BD%9C%E3%82%8B\"><\/span>\u30ab\u30b9\u30bf\u30e0\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u30d5\u30a9\u30fc\u30e0\u3092\u4f5c\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%94%BB%E9%9D%A2%E3%81%AB%E8%A1%A8%E7%A4%BA%E3%81%99%E3%82%8B%E3%82%88%E3%81%86%E3%81%AB%E3%83%95%E3%83%83%E3%82%AF%E3%82%92%E4%BD%9C%E6%88%90\"><\/span>\u753b\u9762\u306b\u8868\u793a\u3059\u308b\u3088\u3046\u306b\u30d5\u30c3\u30af\u3092\u4f5c\u6210<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-php\" data-file=\"wp-content\/themes\/mytheme\/admin\/custom_field.php\" data-lang=\"PHP\"><code>&lt;?php\nadd_action(&#39;admin_menu&#39;, &#39;add_music_field&#39;);<\/code><\/pre><\/div>\n\n\n\n<p>\u3053\u308c\u306f\u7ba1\u7406\u753b\u9762\u304c\u8868\u793a\u3055\u308c\u308b\u969b\u306b\u30d5\u30c3\u30af\u3055\u308c\u308b\u95a2\u6570\u3092\u6307\u5b9a\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u300c\u7ba1\u7406\u753b\u9762\u304c\u8868\u793a\u3055\u308c\u308b\u3068\u304d\u306b<code>add_music_field<\/code>\u3068\u3044\u3046\u95a2\u6570\u3092\u5b9f\u884c\u3057\u3066\u306d\uff01\u300d\u3068\u8a00\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%83%9C%E3%83%83%E3%82%AF%E3%82%B9%E3%82%92%E4%BD%9C%E6%88%90\"><\/span>\u30dc\u30c3\u30af\u30b9\u3092\u4f5c\u6210<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>\u3067\u306f\u3001\u5b9f\u969b\u306b\u5b9f\u884c\u3059\u308b<code>add_music_field<\/code>\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-php\" data-file=\"wp-content\/themes\/mytheme\/admin\/custom_field.php\" data-lang=\"PHP\"><code>&lt;?php\n\/\/ \u524d\u7565\n\/\/ \u4ee5\u4e0b\u3092\u8ffd\u8a18\nfunction add_about_field() {\n  \/\/ add_meta_box(\u8868\u793a\u3055\u308c\u308b\u30dc\u30c3\u30af\u30b9\u306eHTML\u306eID, \u30e9\u30d9\u30eb, \u8868\u793a\u3059\u308b\u5185\u5bb9\u3092\u4f5c\u6210\u3059\u308b\u95a2\u6570\u540d, \u6295\u7a3f\u30bf\u30a4\u30d7, \u8868\u793a\u65b9\u6cd5)\n  add_meta_box( &#39;music-composer&#39;,&#39;\u4f5c\u66f2\u8005&#39;, &#39;create_form_music_composer&#39;, &#39;page&#39;, &#39;normal&#39; );\n  add_meta_box( &#39;music-lyrics&#39;,&#39;\u6b4c\u8a5e&#39;, &#39;create_form_music_lyrics&#39;, &#39;page&#39;, &#39;normal&#39; );\n}<\/code><\/pre><\/div>\n\n\n\n<p><code>add_meta_box<\/code>\u306f\u6295\u7a3f\u753b\u9762\u306e\u300c\u30bf\u30b0\u300d\u3084\u300c\u30ab\u30c6\u30b4\u30ea\u30fc\u300d\u307f\u305f\u3044\u306a\u4e00\u3064\u306e\u7bb1\u3092\u4f5c\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u5927\u4e8b\u306a\u306e\u306f\u7b2c3\u301c5\u5f15\u6570\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u7b2c3\u5f15\u6570\u3067\u306f\u8868\u793a\u3059\u308b\u5185\u5bb9\u3092\u4f5c\u6210\u3059\u308b\u95a2\u6570\u540d\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u6307\u5b9a\u3057\u305f\u95a2\u6570\u3067HTML\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7b2c4\u5f15\u6570\u306f&#8221;page&#8221;, &#8220;post&#8221;, &#8220;custom_post_type&#8221;\u306eslug\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u4ed6\u306b\u3082dashboard\u306a\u3069\u6307\u5b9a\u306f\u3067\u304d\u307e\u3059\u304c\u3001\u3053\u308c\u3089\u306f\u6295\u7a3f\u753b\u9762\u4ee5\u5916\u306b\u4f7f\u308f\u308c\u308b\u3082\u306e\u306a\u306e\u3067\u3001\u4eca\u56de\u306e\u7528\u9014\u3067\u306f\u3053\u308c\u3089\u306e3\u3064\u304f\u3089\u3044\u3057\u304b\u4f7f\u308f\u306a\u3044\u3068\u601d\u3044\u307e\u3059\u3002<br> \u7b2c5\u5f15\u6570\u306f&#8217;normal&#8217;, &#8216;side&#8217;, &#8216;advanced&#8217;\u306e3\u7a2e\u985e\u9078\u629e\u3067\u304d\u307e\u3059\u304c\u3001\u3053\u308c\u3089\u306f\u8868\u793a\u4f4d\u7f6e\u304c\u5909\u308f\u308a\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u3069\u3046\u306a\u308b\u306e\u304b\u306f\u8a66\u3057\u3066\u307f\u3066\u3082\u3089\u3048\u308c\u3070\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"HTML%E3%82%92%E5%87%BA%E5%8A%9B\"><\/span>HTML\u3092\u51fa\u529b<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30d5\u30a9\u30fc\u30e0\u306eHTML\u3092\u51fa\u529b\u3059\u308b\u90e8\u5206\u3092\u4f5c\u3063\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-php\" data-file=\"wp-content\/themes\/mytheme\/admin\/custom_field.php\" data-lang=\"PHP\"><code>&lt;?php\n\/\/ \u524d\u7565\n\/\/ \u3053\u3053\u304b\u3089\u8ffd\u8a18\nfunction create_form_music_composer(){\n  global $post;\n  echo &#39;&lt;input name=&quot;composer&quot; style=&quot;width: 100%;&quot; value=&quot;&#39;.get_post_meta($post-&gt;ID,&#39;composer&#39;,true).&#39;&quot;\/&gt;&#39;;\n}\nfunction create_form_music_lyrics(){\n  global $post;\n  echo &#39;&lt;textarea name=&quot;lyrics&quot; style=&quot;width: 100%; height: 200px;&quot;&gt;&#39;.get_post_meta($post-&gt;ID, &#39;lyrics&#39;, true).&#39;&lt;\/textarea&gt;&#39;\n  \/\/ WYSIWYG\u30a8\u30c7\u30a3\u30bf\u3092\u4f7f\u3046\u3068\u304d\u306f\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0\n  \/\/ wp_editor( get_post_meta($post-&gt;ID,&#39;lyrics&#39;,true), &#39;lyrics-box&#39;, [&#39;textarea_name&#39; =&gt; &#39;lyrics&#39;] );\n}<\/code><\/pre><\/div>\n\n\n\n<p>\u3053\u3053\u3067\u3001<code>global $post<\/code>\u306f<code>$post<\/code>\u3092\u4f7f\u3046\u305f\u3081\u306b\u5fc5\u8981\u306a\u306e\u3067\u3001\u66f8\u3044\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u3053\u3053\u307e\u3067\u3001\u3084\u3063\u3066\u304a\u3051\u3070\u3001\u6295\u7a3f\u753b\u9762\u306b\u30d5\u30a9\u30fc\u30e0\u304c\u8868\u793a\u3055\u308c\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%BF%9D%E5%AD%98%E3%81%99%E3%82%8B%E3%81%9F%E3%82%81%E3%81%AE%E3%82%B3%E3%83%BC%E3%83%89%E3%82%92%E8%A8%98%E8%BF%B0\"><\/span>\u4fdd\u5b58\u3059\u308b\u305f\u3081\u306e\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u6295\u7a3f\u753b\u9762\u306b\u30d5\u30a9\u30fc\u30e0\u304c\u8868\u793a\u3055\u308c\u307e\u3057\u305f\u304c\u3001\u307e\u3060\u3001\u6295\u7a3f\u3057\u3066\u3082\u4fdd\u5b58\u306f\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u6295\u7a3f\u3055\u308c\u305f\u3068\u304d\u3001\u3061\u3083\u3093\u3068\u4fdd\u5b58\u3055\u308c\u308b\u3088\u3046\u306b\u30b3\u30fc\u30c9\u3092\u66f8\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%8A%95%E7%A8%BF%E3%81%95%E3%82%8C%E3%81%9F%E6%99%82%E3%81%AE%E3%83%95%E3%83%83%E3%82%AF%E3%82%92%E4%BD%9C%E6%88%90\"><\/span>\u6295\u7a3f\u3055\u308c\u305f\u6642\u306e\u30d5\u30c3\u30af\u3092\u4f5c\u6210<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-php\" data-file=\"wp-content\/themes\/mytheme\/admin\/custom_field.php\" data-lang=\"PHP\"><code>&lt;?php\n\/\/ \u524d\u7565\n\/\/ \u4ee5\u4e0b\u3092\u8ffd\u52a0\nadd_action(&#39;save_post&#39;, &#39;save_music_field&#39;);<\/code><\/pre><\/div>\n\n\n\n<p>\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u6295\u7a3f\u3092\u4fdd\u5b58\u3059\u308b\u3068\u304d\u306f<code>save_music_field<\/code>\u95a2\u6570\u3092\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u95a2\u6570\u306e\u4e2d\u3067\u3001\u30ab\u30b9\u30bf\u30e0\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u4fdd\u5b58\u3059\u308b\u51e6\u7406\u3092\u8a18\u8ff0\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%82%AB%E3%82%B9%E3%82%BF%E3%83%A0%E3%83%95%E3%82%A3%E3%83%BC%E3%83%AB%E3%83%89%E3%82%92%E4%BF%9D%E5%AD%98\"><\/span>\u30ab\u30b9\u30bf\u30e0\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u4fdd\u5b58<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3059\u308c\u3070\u3001\u30ab\u30b9\u30bf\u30e0\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u4fdd\u5b58\u3067\u304d\u307e\u3059\u3002\u914d\u5217\u306b\u306f\u4f5c\u3063\u305f\u30d5\u30a9\u30fc\u30e0\u306e<code>name<\/code>\u5c5e\u6027\u3092\u8a18\u8ff0\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-php\" data-file=\"wp-content\/themes\/mytheme\/admin\/custom_field.php\" data-lang=\"PHP\"><code>&lt;?php\n\/\/ \u524d\u7565\n\/\/ \u3053\u3053\u304b\u3089\u8ffd\u8a18\nfunction save_music_field($post_id){\n  $my_fields = [&#39;composer&#39;, &#39;lyrics&#39;];\n  foreach($my_fields as $my_field){\n    \/\/ $value\u306b\u4fdd\u5b58\u3059\u308b\u5024\u3092\u683c\u7d0d\u3059\u308b\n    if(isset($_POST[$my_field])){\n      $value=$_POST[$my_field];\n    }else{\n      $value=&#39;&#39;;\n    }\n    \/\/ $value\u304c\u3082\u3068\u3082\u3068\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u3068\u304d\u306fupdate\u3057\u306a\u3044\n    \/\/ $value\u304c\u7a7a\u306e\u3068\u304d\u306f\u524a\u9664\u3059\u308b\n    if( strcmp($value, get_post_meta($post_id, $my_field, true)) != 0 ){\n      update_post_meta($post_id, $my_field, $value);\n    }elseif($value == &quot;&quot;){\n      delete_post_meta($post_id, $my_field, get_post_meta($post_id, $my_field, true));\n    }\n  }\n}<\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%81%BE%E3%81%A8%E3%82%81\"><\/span>\u307e\u3068\u3081<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u307e\u3068\u3081\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a<code>admin\/custom_field.php<\/code>\u304c\u51fa\u6765\u4e0a\u304c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-php\" data-file=\"wp-content\/themes\/mytheme\/admin\/custom_field.php\" data-lang=\"PHP\"><code>&lt;?php\nadd_action(&#39;admin_menu&#39;, &#39;add_music_field&#39;);\nfunction add_about_field() {\n  add_meta_box( &#39;music-composer&#39;,&#39;\u4f5c\u66f2\u8005&#39;, &#39;create_form_music_composer&#39;, &#39;page&#39;, &#39;normal&#39; );\n  add_meta_box( &#39;music-lyrics&#39;,&#39;\u6b4c\u8a5e&#39;, &#39;create_form_music_lyrics&#39;, &#39;page&#39;, &#39;normal&#39; );\n}\n\nfunction create_form_music_composer(){\n  global $post;\n  echo &#39;&lt;input name=&quot;composer&quot; style=&quot;width: 100%;&quot; value=&quot;&#39;.get_post_meta($post-&gt;ID,&#39;composer&#39;,true).&#39;&quot;\/&gt;&#39;;\n}\nfunction create_form_music_lyrics(){\n  global $post;\n  echo &#39;&lt;textarea name=&quot;lyrics&quot; style=&quot;width: 100%; height: 200px;&quot;&gt;&#39;.get_post_meta($post-&gt;ID, &#39;lyrics&#39;, true).&#39;&lt;\/textarea&gt;&#39;\n  \/\/ WYSIWYG\u30a8\u30c7\u30a3\u30bf\u3092\u4f7f\u3046\u3068\u304d\u306f\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0\n  \/\/ wp_editor( get_post_meta($post-&gt;ID,&#39;lyrics&#39;,true), &#39;lyrics-box&#39;, [&#39;textarea_name&#39; =&gt; &#39;lyrics&#39;] );\n}\n\nadd_action(&#39;save_post&#39;, &#39;save_music_field&#39;);\nfunction save_music_field($post_id){\n  $my_fields = [&#39;composer&#39;, &#39;lyrics&#39;];\n  foreach($my_fields as $my_field){\n    if(isset($_POST[$my_field])){\n      $value=$_POST[$my_field];\n    }else{\n      $value=&#39;&#39;;\n    }\n    if( strcmp($value, get_post_meta($post_id, $my_field, true)) != 0 ){\n      update_post_meta($post_id, $my_field, $value);\n    }elseif($value == &quot;&quot;){\n      delete_post_meta($post_id, $my_field, get_post_meta($post_id, $my_field, true));\n    }\n  }\n}<\/code><\/pre><\/div>\n\n\n\n<p>\u3053\u308c\u3089\u3092\u4f7f\u3048\u3070\u3001\u30ab\u30b9\u30bf\u30e0\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u30d7\u30e9\u30b0\u30a4\u30f3\u306b\u983c\u3089\u305a\u3001\u30c6\u30fc\u30de\u3054\u3068\u306b\u4f5c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3054\u89a7\u306e\u3068\u304a\u308a\u3001\u30b3\u30fc\u30c9\u304c\u9577\u304f\u306a\u308b\u306e\u3067\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u5206\u3051\u3066\u3084\u3089\u306a\u3044\u3068\u3001\u7ba1\u7406\u304c\u5927\u5909\u306b\u306a\u3063\u3066\u304d\u307e\u3059\u306e\u3067\u3001<code>functions.php<\/code>\u306f<code>include<\/code>\u6587\u3060\u3051\u3092\u8a18\u8ff0\u3057\u3066\u3001\u3044\u3044\u611f\u3058\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u5206\u3051\u3066\u3084\u308b\u306e\u304c\u30b9\u30de\u30fc\u30c8\u3060\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>WordPress\u306e\u30ab\u30b9\u30bf\u30e0\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u4f7f\u3044\u306b\u304f\u3044\u306e\u3067\u3001\u305d\u308c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306e\u69d8\u3005\u306a\u30d7\u30e9\u30b0\u30a4\u30f3\u304c\u3042\u308a\u307e\u3059\u3002 \u305f\u3060\u3001\u3053\u308c\u3089\u3092\u4f7f\u3046\u3068\u3001\u958b\u767a\u74b0\u5883\u3067\u69cb\u7bc9\u3057\u305f\u3042\u3068\u3001\u672c\u756a\u74b0\u5883\u306b\u79fb\u3059\u3068\u304d\u3001\u518d\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u500b\u4eba\u7684\u306b\u3001WordP [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":208465,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[32,5],"tags":[39,33],"class_list":["post-4260","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php","category-program","tag-php","tag-wordpress"],"aioseo_notices":[],"jetpack_featured_media_url":"http:\/\/cms.inter-arteq.com\/wp-content\/uploads\/2022\/03\/wordpress-how-to-create-custom-field-with-function-php.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/posts\/4260"}],"collection":[{"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/comments?post=4260"}],"version-history":[{"count":3,"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/posts\/4260\/revisions"}],"predecessor-version":[{"id":208464,"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/posts\/4260\/revisions\/208464"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/media\/208465"}],"wp:attachment":[{"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/media?parent=4260"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/categories?post=4260"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/tags?post=4260"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}