{"id":25213,"date":"2026-09-17T09:00:00","date_gmt":"2026-09-17T00:00:00","guid":{"rendered":"https:\/\/motoki-design.co.jp\/wordpress\/?p=25213"},"modified":"2026-09-16T10:56:27","modified_gmt":"2026-09-16T01:56:27","slug":"wordpress-action-hooks","status":"publish","type":"post","link":"https:\/\/motoki-design.co.jp\/wordpress\/wordpress-action-hooks\/","title":{"rendered":"WordPress\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u30d5\u30c3\u30af\uff5c\u5b9f\u884c\u3055\u308c\u308b\u9806\u756a\u3068\u3001\u5834\u9762\u5225\u306b\u3088\u304f\u4f7f\u304625\u500b"},"content":{"rendered":"\n

\u30d5\u30c3\u30af\u306f\u3001WordPress\u306e\u6c7a\u307e\u3063\u305f\u5834\u9762\u306b\u81ea\u5206\u306e\u51e6\u7406\u3092\u5dee\u3057\u8fbc\u3080\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n

\u30c6\u30fc\u30de\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u66f8\u304d\u63db\u3048\u305a\u306b\u6a5f\u80fd\u3092\u8db3\u305b\u308b\u306e\u3067\u3001\u66f4\u65b0\u3067\u6d88\u3048\u307e\u305b\u3093\u3002<\/p>\n\n\n\n

\u305f\u3060\u3057\u3001\u7a2e\u985e\u304c2,000\u4ee5\u4e0a\u3042\u308a\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n

\u5168\u90e8\u899a\u3048\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n

\u5b9f\u969b\u306b\u4f7f\u3046\u306e\u306f20\u500b\u307b\u3069\u3067\u3001\u5927\u4e8b\u306a\u306e\u306f\u300c\u3069\u306e\u9806\u756a\u3067\u8d70\u308b\u304b\u300d\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n

\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u5b9f\u884c\u3055\u308c\u308b\u9806\u756a\u3068\u3001\u5834\u9762\u5225\u306b\u3088\u304f\u4f7f\u3046\u3082\u306e\u3092\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n\n\n\n

\u30a2\u30af\u30b7\u30e7\u30f3\u30d5\u30c3\u30af\u3068\u30d5\u30a3\u30eb\u30bf\u30fc\u30d5\u30c3\u30af\u306e\u9055\u3044<\/h2>\n\n\n\n

\u5148\u306b\u3053\u3053\u3092\u62bc\u3055\u3048\u3066\u304a\u304f\u3068\u3001\u8ff7\u3044\u307e\u305b\u3093\u3002<\/strong><\/p>\n\n\n

\u30b9\u30af\u30ed\u30fc\u30eb\u3067\u304d\u307e\u3059 <\/i><\/span><\/div>\n
<\/th>\u30a2\u30af\u30b7\u30e7\u30f3\u30d5\u30c3\u30af<\/th>\u30d5\u30a3\u30eb\u30bf\u30fc\u30d5\u30c3\u30af<\/th><\/tr><\/thead>
\u5f79\u5272<\/td>\u305d\u306e\u5834\u9762\u3067\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b<\/strong><\/td>\u5024\u3092\u53d7\u3051\u53d6\u3063\u3066\u3001\u66f8\u304d\u63db\u3048\u3066\u8fd4\u3059<\/strong><\/td><\/tr>
\u767b\u9332<\/td>add_action()<\/code><\/td>add_filter()<\/code><\/td><\/tr>
\u623b\u308a\u5024<\/td>\u8981\u3089\u306a\u3044<\/strong><\/td>\u5fc5\u305a\u8fd4\u3059\u3002\u8fd4\u3055\u306a\u3044\u3068\u5024\u304c\u6d88\u3048\u308b<\/strong><\/td><\/tr>
\u4f8b<\/td>\u8aad\u307f\u8fbc\u307f\u304c\u7d42\u308f\u3063\u305f\u3089CSS\u3092\u8db3\u3059<\/td>\u8a18\u4e8b\u306e\u672c\u6587\u306e\u672b\u5c3e\u306b\u4e00\u6587\u3092\u8db3\u3059<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u300c\u4f55\u304b\u3092\u3059\u308b\u300d\u306a\u3089\u30a2\u30af\u30b7\u30e7\u30f3\u3001\u300c\u4f55\u304b\u3092\u5909\u3048\u308b\u300d\u306a\u3089\u30d5\u30a3\u30eb\u30bf\u30fc\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n

\/\/ \u30a2\u30af\u30b7\u30e7\u30f3\uff1a\u51e6\u7406\u3092\u8d70\u3089\u305b\u308b\u3060\u3051\u3002\u8fd4\u3055\u306a\u3044\nadd_action( 'wp_enqueue_scripts', function () {\n\twp_enqueue_style( 'my-style', get_stylesheet_uri() );\n} );\n\n\/\/ \u30d5\u30a3\u30eb\u30bf\u30fc\uff1a\u53d7\u3051\u53d6\u3063\u3066\u3001\u5909\u3048\u3066\u3001\u5fc5\u305a\u8fd4\u3059\nadd_filter( 'the_content', function ( $content ) {\n\treturn $content . '<p>\u6700\u5f8c\u307e\u3067\u8aad\u3093\u3067\u3044\u305f\u3060\u304d\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3057\u305f\u3002<\/p>';\n} );<\/code><\/pre><\/div>\n\n\n\n
\u30d5\u30a3\u30eb\u30bf\u30fc\u3067 return<\/code> \u3092\u5fd8\u308c\u308b\u3068\u3001\u672c\u6587\u304c\u307e\u308b\u3054\u3068\u6d88\u3048\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n
\u771f\u3063\u767d\u306b\u306a\u3063\u305f\u3089\u3001\u307e\u305a\u3053\u3053\u3092\u7591\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n
\u5b9f\u884c\u3055\u308c\u308b\u9806\u756a<\/h2>\n\n\n\n
\u9806\u756a\u3092\u5916\u3059\u3068\u3001\u52d5\u304b\u306a\u3044\u30fb\u30a8\u30e9\u30fc\u306b\u306a\u308b\u3001\u306e\u3069\u3061\u3089\u304b\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n
\u4ee3\u8868\u7684\u306a\u3082\u306e\u3092\u3001\u8d70\u308b\u9806\u306b\u4e26\u3079\u307e\u3059\u3002<\/p>\n\n\n
\u30b9\u30af\u30ed\u30fc\u30eb\u3067\u304d\u307e\u3059 <\/i><\/span><\/div>\n
\u9806<\/th>\u30d5\u30c3\u30af<\/th>\u3053\u306e\u6642\u70b9\u3067\u3067\u304d\u308b\u3053\u3068<\/th><\/tr><\/thead>
1<\/td>muplugins_loaded<\/code><\/td>\u5fc5\u9808\u30d7\u30e9\u30b0\u30a4\u30f3\u3060\u3051\u8aad\u307f\u8fbc\u307f\u6e08\u307f\u3002\u307e\u3060\u4f55\u3082\u4f7f\u3048\u306a\u3044<\/strong><\/td><\/tr>
2<\/td>plugins_loaded<\/code><\/td>\u30d7\u30e9\u30b0\u30a4\u30f3\u304c\u63c3\u3046\u3002\u30c6\u30fc\u30de\u306f\u307e\u3060<\/strong><\/td><\/tr>
3<\/td>after_setup_theme<\/code><\/td>\u30c6\u30fc\u30de\u306e\u6a5f\u80fd\u3092\u5ba3\u8a00\u3059\u308b\u5834\u6240<\/strong>\uff08\u30a2\u30a4\u30ad\u30e3\u30c3\u30c1\u5bfe\u5fdc\u306a\u3069\uff09<\/td><\/tr>
4<\/td>init<\/code><\/td>\u3044\u3061\u3070\u3093\u4f7f\u3046\u3002<\/strong>\u6295\u7a3f\u30bf\u30a4\u30d7\u30fb\u30bf\u30af\u30bd\u30ce\u30df\u30fc\u30fb\u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u767b\u9332<\/td><\/tr>
5<\/td>wp_loaded<\/code><\/td>\u5168\u90e8\u306e\u8aad\u307f\u8fbc\u307f\u304c\u7d42\u308f\u3063\u305f\u76f4\u5f8c<\/td><\/tr>
6<\/td>template_redirect<\/code><\/td>\u3069\u306e\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u4f7f\u3046\u304b\u6c7a\u307e\u308b\u76f4\u524d\u3002<\/strong>\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306f\u3053\u3053<\/td><\/tr>
7<\/td>wp_enqueue_scripts<\/code><\/td>CSS\u3068JS\u3092\u8aad\u307f\u8fbc\u3080\u5834\u6240\u3002<\/strong>\u6761\u4ef6\u5206\u5c90\u304c\u4f7f\u3048\u308b<\/td><\/tr>
8<\/td>wp_head<\/code><\/td><head><\/code> \u306e\u4e2d\u306b\u51fa\u529b\u3059\u308b<\/td><\/tr>
9<\/td>wp_body_open<\/code><\/td><body><\/code> \u306e\u76f4\u5f8c\u3002\u8a08\u6e2c\u30bf\u30b0\u306f\u3053\u3053<\/td><\/tr>
10<\/td>wp_footer<\/code><\/td>\u30da\u30fc\u30b8\u306e\u672b\u5c3e\u3002\u91cd\u3044JS\u306f\u3053\u3053\u3078<\/strong><\/td><\/tr><\/tbody><\/table>
\u3088\u304f\u4f7f\u3046\u30a2\u30af\u30b7\u30e7\u30f3\u30d5\u30c3\u30af\u306e\u5b9f\u884c\u9806\uff082026\u5e749\u6708\u6642\u70b9\uff09<\/figcaption><\/figure>\n\n\n\n
\u8ff7\u3063\u305f\u3089 init<\/code> \u306b\u66f8\u304f\u3001\u3067\u5927\u304d\u304f\u5916\u3057\u307e\u305b\u3093\u3002<\/strong><\/p>\n\n\n\n
\u305f\u3060\u3057 init<\/code> \u306f\u7ba1\u7406\u753b\u9762\u3067\u3082 Ajax \u3067\u3082\u8d70\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u30d5\u30ed\u30f3\u30c8\u3060\u3051\u3067\u52d5\u304b\u3057\u305f\u3044\u3068\u304d\u306f\u3001\u6761\u4ef6\u3092\u6dfb\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n
add_action( 'init', function () {\n\tif ( is_admin() ) {\n\t\treturn;   \/\/ \u7ba1\u7406\u753b\u9762\u3067\u306f\u4f55\u3082\u3057\u306a\u3044\n\t}\n\t\/\/ \u3053\u3053\u306b\u30d5\u30ed\u30f3\u30c8\u5411\u3051\u306e\u51e6\u7406\n} );<\/code><\/pre><\/div>\n\n\n\n
\u5834\u9762\u5225\u306b\u3088\u304f\u4f7f\u3046\u30d5\u30c3\u30af<\/h2>\n\n\n\n
CSS\u3068JS\u3092\u8db3\u3059<\/h3>\n\n\n
\u30b9\u30af\u30ed\u30fc\u30eb\u3067\u304d\u307e\u3059 <\/i><\/span><\/div>\n
\u30d5\u30c3\u30af<\/th>\u4f7f\u3044\u3069\u3053\u308d<\/th><\/tr><\/thead>
wp_enqueue_scripts<\/code><\/td>\u30d5\u30ed\u30f3\u30c8\u3002<\/strong>\u540d\u524d\u306fscripts\u3060\u304cCSS\u3082\u3053\u3053<\/td><\/tr>
admin_enqueue_scripts<\/code><\/td>\u7ba1\u7406\u753b\u9762<\/td><\/tr>
enqueue_block_editor_assets<\/code><\/td>\u30d6\u30ed\u30c3\u30af\u30a8\u30c7\u30a3\u30bf\u306e\u4e2d\u3060\u3051<\/strong><\/td><\/tr>
login_enqueue_scripts<\/code><\/td>\u30ed\u30b0\u30a4\u30f3\u753b\u9762<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
wp_head<\/code> \u306b\u76f4\u63a5 <style><\/code> \u3092\u66f8\u304f\u3088\u308a\u3001wp_enqueue_scripts<\/code> \u3092\u4f7f\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/strong><\/p>\n\n\n\n
\u8aad\u307f\u8fbc\u307f\u9806\u3068\u30ad\u30e3\u30c3\u30b7\u30e5\u3092WordPress\u304c\u9762\u5012\u3092\u898b\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
\u8a18\u4e8b\u306e\u4fdd\u5b58\u306b\u5408\u308f\u305b\u3066\u52d5\u304b\u3059<\/h3>\n\n\n
\u30b9\u30af\u30ed\u30fc\u30eb\u3067\u304d\u307e\u3059 <\/i><\/span><\/div>\n
\u30d5\u30c3\u30af<\/th>\u3044\u3064\u8d70\u308b\u304b<\/th><\/tr><\/thead>
save_post<\/code><\/td>\u6295\u7a3f\u306e\u4fdd\u5b58\u6642\u3002<\/strong>\u81ea\u52d5\u4fdd\u5b58\u3068\u30ea\u30d3\u30b8\u30e7\u30f3\u3067\u3082\u8d70\u308b\u306e\u3067\u9664\u5916\u304c\u8981\u308b<\/td><\/tr>
save_post_{\u6295\u7a3f\u30bf\u30a4\u30d7}<\/code><\/td>\u305d\u306e\u6295\u7a3f\u30bf\u30a4\u30d7\u3060\u3051\u3002<\/strong>\u3053\u3061\u3089\u306e\u307b\u3046\u304c\u5b89\u5168<\/td><\/tr>
transition_post_status<\/code><\/td>\u516c\u958b\u30fb\u4e0b\u66f8\u304d\u306a\u3069\u72b6\u614b\u304c\u5909\u308f\u3063\u305f\u3068\u304d<\/td><\/tr>
publish_post<\/code><\/td>\u516c\u958b\u306b\u306a\u3063\u305f\u77ac\u9593<\/td><\/tr>
before_delete_post<\/code><\/td>\u5b8c\u5168\u306b\u524a\u9664\u3055\u308c\u308b\u76f4\u524d<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
save_post<\/code> \u306f\u3001\u305d\u306e\u307e\u307e\u66f8\u304f\u3068\u4fdd\u5b58\u306e\u305f\u3073\u306b\u4f55\u5ea6\u3082\u8d70\u308a\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n
add_action( 'save_post_post', function ( $post_id, $post, $update ) {\n\t\/\/ \u81ea\u52d5\u4fdd\u5b58\u3068\u30ea\u30d3\u30b8\u30e7\u30f3\u3067\u306f\u52d5\u304b\u3055\u306a\u3044\n\tif ( wp_is_post_autosave( $post_id ) || wp_is_post_revision( $post_id ) ) {\n\t\treturn;\n\t}\n\t\/\/ \u6a29\u9650\u306e\u78ba\u8a8d\u3082\u5165\u308c\u308b\n\tif ( ! current_user_can( 'edit_post', $post_id ) ) {\n\t\treturn;\n\t}\n\t\/\/ \u3053\u3053\u306b\u51e6\u7406\n}, 10, 3 );<\/code><\/pre><\/div>\n\n\n\n
\u7ba1\u7406\u753b\u9762\u3092\u3044\u3058\u308b<\/h3>\n\n\n
\u30b9\u30af\u30ed\u30fc\u30eb\u3067\u304d\u307e\u3059 <\/i><\/span><\/div>\n
\u30d5\u30c3\u30af<\/th>\u4f7f\u3044\u3069\u3053\u308d<\/th><\/tr><\/thead>
admin_menu<\/code><\/td>\u30e1\u30cb\u30e5\u30fc\u306e\u8ffd\u52a0\u30fb\u524a\u9664<\/td><\/tr>
admin_init<\/code><\/td>\u7ba1\u7406\u753b\u9762\u306e\u521d\u671f\u5316\u3002\u8a2d\u5b9a\u306e\u767b\u9332<\/td><\/tr>
admin_notices<\/code><\/td>\u7ba1\u7406\u753b\u9762\u306b\u901a\u77e5\u3092\u51fa\u3059<\/td><\/tr>
add_meta_boxes<\/code><\/td>\u7de8\u96c6\u753b\u9762\u306b\u5165\u529b\u6b04\u3092\u8db3\u3059<\/td><\/tr>
admin_bar_menu<\/code><\/td>\u4e0a\u90e8\u306e\u30c4\u30fc\u30eb\u30d0\u30fc\u3092\u3044\u3058\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3068\u8868\u793a\u306e\u5206\u5c90<\/h3>\n\n\n
\u30b9\u30af\u30ed\u30fc\u30eb\u3067\u304d\u307e\u3059 <\/i><\/span><\/div>\n
\u30d5\u30c3\u30af<\/th>\u4f7f\u3044\u3069\u3053\u308d<\/th><\/tr><\/thead>
template_redirect<\/code><\/td>\u6761\u4ef6\u3092\u898b\u3066\u5225\u306eURL\u3078\u98db\u3070\u3059\u3002<\/strong>\u51fa\u529b\u524d\u306a\u306e\u3067\u5b89\u5168<\/td><\/tr>
pre_get_posts<\/code><\/td>\u8868\u793a\u3059\u308b\u8a18\u4e8b\u306e\u7d5e\u308a\u8fbc\u307f\u3092\u5909\u3048\u308b\u3002<\/strong>\u30d5\u30a3\u30eb\u30bf\u30fc\u3067\u306f\u306a\u304f\u30a2\u30af\u30b7\u30e7\u30f3<\/td><\/tr>
wp<\/code><\/td>\u30af\u30a8\u30ea\u304c\u6c7a\u307e\u3063\u305f\u76f4\u5f8c<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
pre_get_posts<\/code> \u306f\u540d\u524d\u304b\u3089\u30d5\u30a3\u30eb\u30bf\u30fc\u306b\u898b\u3048\u307e\u3059\u304c\u3001\u30a2\u30af\u30b7\u30e7\u30f3\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n
\u6e21\u3055\u308c\u305f\u30af\u30a8\u30ea\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u76f4\u63a5\u66f8\u304d\u63db\u3048\u307e\u3059\u3002<\/p>\n\n\n\n
add_action( 'pre_get_posts', function ( $query ) {\n\t\/\/ \u7ba1\u7406\u753b\u9762\u3068\u30b5\u30d6\u30af\u30a8\u30ea\u306f\u89e6\u3089\u306a\u3044\n\tif ( is_admin() || ! $query->is_main_query() ) {\n\t\treturn;\n\t}\n\tif ( $query->is_category() ) {\n\t\t$query->set( 'posts_per_page', 20 );\n\t}\n} );<\/code><\/pre><\/div>\n\n\n\n
\u512a\u5148\u5ea6\u3068\u5f15\u6570\u306e\u6570<\/h2>\n\n\n\n
add_action()<\/code> \u306e3\u3064\u3081\u30684\u3064\u3081\u304c\u3001\u3064\u307e\u305a\u304d\u3069\u3053\u308d\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n
add_action( '\u30d5\u30c3\u30af\u540d', '\u95a2\u6570\u540d', \u512a\u5148\u5ea6, \u53d7\u3051\u53d6\u308b\u5f15\u6570\u306e\u6570 );<\/code><\/pre><\/div>\n\n\n
\u30b9\u30af\u30ed\u30fc\u30eb\u3067\u304d\u307e\u3059 <\/i><\/span><\/div>\n
\u5f15\u6570<\/th>\u65e2\u5b9a<\/th>\u610f\u5473<\/th><\/tr><\/thead>
\u512a\u5148\u5ea6<\/td>10<\/strong><\/td>\u5c0f\u3055\u3044\u307b\u3069\u5148\u306b\u8d70\u308b\u3002<\/strong>\u3042\u3068\u304b\u3089\u4e0a\u66f8\u304d\u3057\u305f\u3044\u306a\u3089\u5927\u304d\u304f\u3059\u308b<\/td><\/tr>
\u5f15\u6570\u306e\u6570<\/td>1<\/strong><\/td>2\u3064\u4ee5\u4e0a\u53d7\u3051\u53d6\u308b\u306a\u3089\u5fc5\u305a\u66f8\u304f\u3002<\/strong>\u66f8\u304b\u306a\u3044\u30682\u3064\u3081\u4ee5\u964d\u304c\u6e21\u3089\u306a\u3044<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u300c\u5f15\u6570\u304cnull\u306b\u306a\u308b\u300d\u306e\u539f\u56e0\u306f\u3001\u307b\u307c\u3053\u306e4\u3064\u3081\u306e\u66f8\u304d\u5fd8\u308c\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n
\u4ed6\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u51e6\u7406\u3088\u308a\u5f8c\u306b\u8d70\u3089\u305b\u305f\u3044\u3068\u304d\u306f\u3001\u512a\u5148\u5ea6\u3092\u5927\u304d\u304f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\/\/ \u4ed6\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u304c 10 \u3067\u66f8\u304d\u63db\u3048\u305f\u3042\u3068\u306b\u3001\u3053\u3061\u3089\u3067\u4e0a\u66f8\u304d\u3059\u308b\nadd_action( 'wp_enqueue_scripts', 'my_override', 99 );<\/code><\/pre><\/div>\n\n\n\n
\u30d5\u30c3\u30af\u3092\u63a2\u3059\u3068\u304d\u306f<\/h2>\n\n\n\n
\u5168\u90e8\u3092\u899a\u3048\u308b\u3088\u308a\u3001\u63a2\u3057\u65b9\u3092\u77e5\u3063\u3066\u304a\u304f\u307b\u3046\u304c\u65e9\u3044\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n