{"id":14375,"date":"2023-10-24T05:51:08","date_gmt":"2023-10-23T21:51:08","guid":{"rendered":"https:\/\/fgchen.com\/wpedu\/?p=14375"},"modified":"2026-03-30T14:31:38","modified_gmt":"2026-03-30T06:31:38","slug":"how-to-use-wordpress-add_filter-useful-examples","status":"publish","type":"post","link":"https:\/\/fgchen.com\/wpedu\/2023\/10\/how-to-use-wordpress-add_filter-useful-examples\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528WordPress\u88cf\u7684add_filter\u53ca\u5be6\u7528\u7684\u7bc4\u4f8b"},"content":{"rendered":"<p><a href=\"https:\/\/www.hostinger.com\/tutorials\/wordpress-add-filter\"><img decoding=\"async\" class=\"alignnone size-full\" src=\"https:\/\/www.hostinger.com\/tutorials\/wp-content\/uploads\/sites\/2\/2023\/07\/wordpress-expert.webp\" alt=\"\" \/><\/a><\/p>\n<blockquote>\n<ul>\n<li>\u4ec0\u9ebc\u662fWordPress\u904e\u6ffe\u5668\uff1f\u904e\u6ffe\u5668\u662f\u4e00\u7a2e\u9264\u5b50\uff0c\u53ef\u4ee5\u5728\u6578\u64da\u986f\u793a\u5728\u700f\u89bd\u5668\u4e4b\u524d\u5c0d\u5176\u9032\u884c\u4fee\u6539\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u4ee5\u6539\u8b8a\u4f60\u7684\u7db2\u7ad9\u6587\u7ae0\u7684\u6458\u8981\u9577\u5ea6\u6216\u5728\u6587\u7ae0\u4e2d\u6dfb\u52a0\u8173\u8a3b\u3002<\/li>\n<li>WordPress\u904e\u6ffe\u5668\u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff1f\u904e\u6ffe\u5668\u6703\u6514\u622aWordPress\u50b3\u905e\u7684\u6578\u64da\uff0c\u6839\u64da\u7d66\u5b9a\u7684\u51fd\u6578\u5c0d\u5176\u9032\u884c\u4fee\u6539\uff0c\u7136\u5f8c\u5c07\u5176\u986f\u793a\u7d66\u7528\u6236\u7684\u700f\u89bd\u5668\u3002\u8981\u5275\u5efa\u4e00\u500b\u904e\u6ffe\u5668\uff0c\u4f60\u9700\u8981\u5728\u4f60\u7684\u7db2\u7ad9\u7684functions.php\u6587\u4ef6\u4e2d\u6dfb\u52a0add_filter\u51fd\u6578\uff0c\u4e26\u6307\u5b9a\u904e\u6ffe\u5668\u540d\u7a31\u548c\u56de\u8abf\u51fd\u6578\u3002<\/li>\n<li>WordPress add_filter\u53c3\u6578\u3002add_filter\u51fd\u6578\u6709\u56db\u500b\u53c3\u6578\uff1a$tag\u3001$function_to_add\u3001$priority\u548c$accepted_args\u3002$tag\u662f\u904e\u6ffe\u5668\u540d\u7a31\uff0c$function_to_add\u662f\u56de\u8abf\u51fd\u6578\u540d\u7a31\uff0c$priority\u662f\u6c7a\u5b9a\u56de\u8abf\u51fd\u6578\u57f7\u884c\u9806\u5e8f\u7684\u6574\u6578\uff0c$accepted_args\u662f\u56de\u8abf\u51fd\u6578\u63a5\u53d7\u7684\u53c3\u6578\u6578\u91cf\u3002<\/li>\n<li>add_filter\u5728WordPress\u4e2d\u7684\u7bc4\u4f8b\u3002\u6587\u7ae0\u63d0\u4f9b\u4e86\u56db\u500b\u5e38\u898b\u7684\u4f7f\u7528\u6848\u4f8b\uff1a\n<ul>\n<li>\u6539\u8b8a\u6587\u7ae0\u6458\u8981\u9577\u5ea6\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528excerpt_length\u904e\u6ffe\u5668\u4f86\u4fee\u6539\u9ed8\u8a8d\u768455\u500b\u5b57\u7b26\u7684\u6458\u8981\u9577\u5ea6\uff0c\u4e26\u8fd4\u56de\u4e00\u500b\u65b0\u7684\u503c\u3002<\/li>\n<li>\u4fee\u6539\u6587\u7ae0\u5167\u5bb9\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528the_content\u904e\u6ffe\u5668\u4f86\u5728\u6587\u7ae0\u5167\u5bb9\u4e2d\u6dfb\u52a0\u6216\u522a\u9664\u4e00\u4e9b\u5143\u7d20\uff0c\u4f8b\u5982\u8173\u8a3b\u3001\u5716\u7247\u6216\u5ee3\u544a\u3002<\/li>\n<li>\u5728\u7279\u5b9a\u5206\u985e\u7684\u6587\u7ae0\u4e2d\u986f\u793a\u5716\u7247\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528post_thumbnail_html\u904e\u6ffe\u5668\u4f86\u6839\u64da\u6587\u7ae0\u6240\u5c6c\u7684\u5206\u985e\u4f86\u986f\u793a\u4e0d\u540c\u7684\u7279\u8272\u5716\u7247\u3002<\/li>\n<li>\u6539\u8b8a\u986f\u793a\u7684\u7522\u54c1\u6578\u91cf\u3002\u5982\u679c\u4f60\u4f7f\u7528WooCommerce\u63d2\u4ef6\u4f86\u5275\u5efa\u96fb\u5b50\u5546\u52d9\u7db2\u7ad9\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528loop_shop_per_page\u904e\u6ffe\u5668\u4f86\u4fee\u6539\u6bcf\u9801\u986f\u793a\u7684\u7522\u54c1\u6578\u91cf\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5176\u4ed6\u5e38\u7528\u7684WordPress\u904e\u6ffe\u5668\u3002\u6587\u7ae0\u9084\u5217\u51fa\u4e86\u4e00\u4e9b\u5176\u4ed6\u5e38\u7528\u7684WordPress\u904e\u6ffe\u5668\uff0c\u4f8b\u5982wp_title\u3001login_errors\u3001comment_text\u3001wp_mail_from\u7b49<\/li>\n<\/ul>\n<\/blockquote>\n<p>\u5167\u5bb9\u51fa\u8655: <em><a href=\"https:\/\/www.hostinger.com\/tutorials\/wordpress-add-filter\">How to Use WordPress add_filter + Useful Examples<\/a><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ec0\u9ebc\u662fWordPress\u904e\u6ffe\u5668\uff1f\u904e\u6ffe\u5668\u662f\u4e00\u7a2e\u9264\u5b50\uff0c\u53ef\u4ee5\u5728\u6578\u64da\u986f\u793a\u5728\u700f\u89bd\u5668\u4e4b\u524d\u5c0d\u5176 &hellip; 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