{"id":32624,"date":"2024-11-25T09:39:34","date_gmt":"2024-11-25T01:39:34","guid":{"rendered":"https:\/\/fwq.ai\/blog\/32624\/"},"modified":"2024-11-25T09:39:34","modified_gmt":"2024-11-25T01:39:34","slug":"%e9%87%8a%e6%94%be-wp_query-%e7%9a%84%e5%8a%9b%e9%87%8f%ef%bc%9a%e6%8e%a2%e7%b4%a2%e5%b1%9e%e6%80%a7%e5%92%8c%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/32624\/","title":{"rendered":"\u91ca\u653e WP_Query \u7684\u529b\u91cf\uff1a\u63a2\u7d22\u5c5e\u6027\u548c\u65b9\u6cd5"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/465\/014\/169378590786002.jpg\" class=\"aligncenter\" title=\"\u91ca\u653e WP_Query \u7684\u529b\u91cf\uff1a\u63a2\u7d22\u5c5e\u6027\u548c\u65b9\u6cd5\u63d2\u56fe\" alt=\"\u91ca\u653e WP_Query \u7684\u529b\u91cf\uff1a\u63a2\u7d22\u5c5e\u6027\u548c\u65b9\u6cd5\u63d2\u56fe\" \/><\/p>\n<\/p>\n<p>\u6b22\u8fce\u6765\u5230\u201c\u638c\u63e1 WP_Query\u201d\u7cfb\u5217\u7684\u53e6\u4e00\u90e8\u5206\u3002\u5230\u76ee\u524d\u4e3a\u6b62\u6211\u4eec\u505a\u5f97\u600e\u4e48\u6837\uff1f\u6211\u5e0c\u671b\u60a8\u559c\u6b22\u8fd9\u4e9b\u6559\u7a0b\uff0c\u5c31\u50cf\u6211\u4eec\u559c\u6b22\u7f16\u5199\u5b83\u4eec\u4e00\u6837\u3002<\/p>\n<p>\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u60a8\u5c06\u4e86\u89e3 WP_Query \u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u4f46\u9996\u5148\uff0c\u6211\u8ba4\u4e3a\u8ba8\u8bba\u4e00\u4e0b\u7c7b\u4e2d\u7684\u201c\u5c5e\u6027\u201d\u548c\u201c\u65b9\u6cd5\u201d\u662f\u5408\u9002\u7684\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u5417\uff1f<\/p>\n<h2>\u5c5e\u6027\u548c\u65b9\u6cd5\u5230\u5e95\u662f\u4ec0\u4e48\uff1f<\/h2>\n<p>\u5728 PHP \u4e2d\uff0c\u6709\u4e00\u79cd<em>\u66f4\u7b80\u6d01<\/em>\u7684\u65b9\u5f0f\u7f16\u5199\u4ee3\u7801\uff1a\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\uff0c\u6216 OOP\u3002\u5bf9\u4e8e OOP\uff0c\u6211\u4eec\u4f7f\u7528\u201c\u7c7b\u201d\u4f5c\u4e3a\u84dd\u56fe \u2014 \u6211\u4ece Code Tuts+ \u7684\u4e00\u7bc7<em>\u7ecf\u5178<\/em>\u5e16\u5b50\u4e2d\u83b7\u53d6\u4e86\u8fd9\u4e2a\u672f\u8bed\uff0cJason Lengstorf \u7684\u201c\u9762\u5411\u5bf9\u8c61\u7684 PHP \u521d\u5b66\u8005\u201d\uff1a<\/p>\n<blockquote><p>\n  \u4f8b\u5982\uff0c\u7c7b\u5c31\u50cf\u623f\u5b50\u7684\u84dd\u56fe\u3002\u5b83\u5728\u7eb8\u4e0a\u5b9a\u4e49\u4e86\u623f\u5b50\u7684\u5f62\u72b6\uff0c\u6e05\u695a\u5730\u5b9a\u4e49\u548c\u89c4\u5212\u4e86\u623f\u5b50\u4e0d\u540c\u90e8\u5206\u4e4b\u95f4\u7684\u5173\u200b\u200b\u7cfb\uff0c\u5373\u4f7f\u623f\u5b50\u5e76\u4e0d\u5b58\u5728\u3002\n<\/p><\/blockquote>\n<p>\uff08\u8bf7\u8bb0\u4f4f WP_Query \u662f WordPress \u6838\u5fc3\u7684\u91cd\u8981\u7c7b\u3002\uff09<\/p>\n<p>\u5f53\u60a8\u7406\u89e3 PHP \u7c7b\u7684\u6982\u5ff5\u65f6\uff0c\u201c\u5c5e\u6027\u201d\u548c\u201c\u65b9\u6cd5\u201d\u5c31\u4f1a\u53d8\u5f97\u975e\u5e38\u5bb9\u6613\u7406\u89e3\uff0c\u56e0\u4e3a\u8fd9\u4e9b\u8bcd\u53ea\u662f\u201c\u53d8\u91cf\u201d\u548c\u201c\u51fd\u6570\u201d\u7684\u540c\u4e49\u8bcd\u3002\u662f\u7684\uff0c<em>\u5c5e\u6027<\/em>\u662f PHP \u7c7b\u7684\u53d8\u91cf\uff0c<em>\u65b9\u6cd5<\/em>\u662f PHP \u7c7b\u7684\u51fd\u6570\u3002<\/p>\n<p>\u73b0\u5728\u6211\u4eec\u5df2\u7ecf\u4ecb\u7ecd\u4e86\u5b83\u4eec\u662f\u4ec0\u4e48\uff0c\u8ba9\u6211\u4eec\u6765\u4e86\u89e3\u6bcf\u4e2a\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n<p><em>\u8b66\u544a\uff1a<\/em>\u76f4\u63a5\u66f4\u6539\u5c5e\u6027\u662f\u4e0d\u660e\u667a\u7684\u3002\u6b63\u5982 Codex \u6240\u8bf4\uff0c\u60a8\u5e94\u8be5\u4f7f\u7528 WP_Query \u7684\u65b9\u6cd5\u4e0e\u5b83\u4eec\u4ea4\u4e92\u3002<\/p>\n<h2>WP_Query \u7c7b\u7684\u5c5e\u6027<\/h2>\n<p>\u8ba9\u6211\u4eec\u4ece WP_Query \u7c7b\u7684\u5c5e\u6027\u6216\u53d8\u91cf\u5f00\u59cb\u3002<\/p>\n<h3>\u67e5\u8be2\u5b57\u7b26\u4e32\uff1a$query <\/h3>\n<p>\u6b64\u5c5e\u6027\u5b58\u50a8\u4f20\u9012\u7ed9 $wp_query \u5bf9\u8c61\u7684\u67e5\u8be2\u3002<\/p>\n<h3>\u67e5\u8be2\u53d8\u91cf\u6570\u7ec4\uff1a$query_vars <\/h3>\n<p>\u6b64\u5c5e\u6027\u5b58\u50a8 $query \u7684\u53d8\u91cf\uff08\u53ca\u5176\u503c\uff09\u7684\u5173\u8054\u6570\u7ec4\u3002<\/p>\n<h3>\u67e5\u8be2\u5bf9\u8c61\uff1a$queried_object <\/h3>\n<p>\u8be5\u5c5e\u6027\u5b58\u50a8\u5f53\u524d\u67e5\u8be2\u7684\u5bf9\u8c61\uff0c\u5982 $post \u5bf9\u8c61\uff08\u5982\u679c\u662f post \u67e5\u8be2\uff09\u6216 $author \u5bf9\u8c61\uff08\u5982\u679c\u662f\u4f5c\u8005\u67e5\u8be2\uff09\u3002<\/p>\n<h3>\u67e5\u8be2\u5bf9\u8c61\u7684ID\uff1a$queried_object_id <\/h3>\n<p>\u8be5\u5c5e\u6027\u5b58\u50a8\u67e5\u8be2\u5bf9\u8c61\u7684ID\u3002<\/p>\n<h3>\u67e5\u8be2\u8fd4\u56de\u7684\u5e16\u5b50\uff1a$posts <\/h3>\n<p>\u6b64\u5c5e\u6027\u5b58\u50a8\u4ece\u67e5\u8be2\u8fd4\u56de\u7684\u5e16\u5b50\u3002<\/p>\n<h3>\u663e\u793a\u7684\u5e16\u5b50\u6570\u91cf\uff1a$post_count <\/h3>\n<p>\u6b64\u5c5e\u6027\u5b58\u50a8\u5f53\u524d\u67e5\u8be2\u7684\u5e16\u5b50\u6570\u3002<\/p>\n<h3>\u67e5\u8be2\u8fd4\u56de\u7684\u5e16\u5b50\u6570\uff1a$found_posts <\/h3>\n<p>\u6b64\u5c5e\u6027\u5b58\u50a8 SQL \u67e5\u8be2\u4e2d\u4e0d\u5305\u542b LIMIT \u5b50\u53e5\u7684\u5e16\u5b50\u6570\u91cf\u3002<\/p>\n<h3>\u9875\u6570\uff1a$max_num_pages <\/h3>\n<p>\u6b64\u5c5e\u6027\u5b58\u50a8\u9875\u6570 &#8211; \u8ba1\u7b97\u65b9\u6cd5\u662f\u5c06 $found_posts \u9664\u4ee5 $posts_per_page\u3002<\/p>\n<h3>\u5f53\u524d\u5e16\u5b50\u7684\u7d22\u5f15\uff1a$current_post <\/h3>\n<p>\u8be5\u5c5e\u6027\u5b58\u50a8\u5faa\u73af\u4e2d\u5f53\u524d\u9879\u7684\u7d22\u5f15\u53f7\u3002\u4f8b\u5982\uff0c\u5982\u679c\u5faa\u73af\u521a\u521a\u5f00\u59cb\uff0c\u5219\u4e3a -1\uff0c\u5e76\u4e14\u901a\u8fc7 next_post() \u65b9\u6cd5\u9012\u589e\u3002<\/p>\n<h3>\u5f53\u524d\u5e16\u5b50\uff1a$post <\/h3>\n<p>\u8fd9\u4e2a\u5c5e\u6027\u5b58\u50a8\u5f53\u524d\u7684\u5e16\u5b50\u3002<\/p>\n<h3>\u6761\u4ef6\u6807\u7b7e\u5e03\u5c14\u503c\uff1a$is_{conditional} <\/h3>\n<p>\u4ee5\u4e0b\u5c5e\u6027\u5b58\u50a8\u4e3a\u5e03\u5c14\u503c\uff0c\u63d0\u4f9b\u6709\u5173\u5f53\u524d\u5e16\u5b50\u72b6\u6001\u7684\u4fe1\u606f\uff1a<\/p>\n<ul>\n<li> $is_single\uff1a\u68c0\u67e5\u662f\u5426\u662f\u4efb\u4f55\u5e16\u5b50\u7c7b\u578b\uff08\u201c\u9644\u4ef6\u201d\u548c\u201c\u9875\u9762\u201d\u5e16\u5b50\u7c7b\u578b\u9664\u5916\uff09\u7684\u5355\u4e2a\u5e16\u5b50\u3002<\/li>\n<li> $is_page: \u68c0\u67e5\u5b83\u662f\u5426\u662f\u4e00\u4e2a\u9875\u9762\u3002<\/li>\n<li> $is_archive: \u68c0\u67e5\u662f\u5426\u4e3a\u5b58\u6863\u9875\u9762\u3002<\/li>\n<li> $is_preview\uff1a\u68c0\u67e5\u662f\u5426\u662f\u5e16\u5b50\u9884\u89c8\u3002<\/li>\n<li> $is_date\uff1a\u68c0\u67e5\u662f\u5426\u662f\u57fa\u4e8e\u65e5\u671f\u7684\u5b58\u6863\u9875\u9762\u3002<\/li>\n<li> $is_year\uff1a\u68c0\u67e5\u662f\u5426\u662f\u57fa\u4e8e\u5e74\u4efd\u7684\u5b58\u6863\u9875\u9762\u3002<\/li>\n<li> $is_month\uff1a\u68c0\u67e5\u662f\u5426\u662f\u57fa\u4e8e\u6708\u4efd\u7684\u5b58\u6863\u9875\u9762\u3002<\/li>\n<li> $is_time\uff1a\u68c0\u67e5\u662f\u5426\u662f\u57fa\u4e8e\u65f6\u95f4\uff08\u6bcf\u5c0f\u65f6\u3001\u6bcf\u5206\u949f\u6216\u6bcf\u79d2\uff09\u7684\u5b58\u6863\u9875\u9762\u3002<\/li>\n<li> $is_author\uff1a\u68c0\u67e5\u662f\u5426\u662f\u4f5c\u8005\u7684\u5b58\u6863\u9875\u9762\u3002<\/li>\n<li> $is_category: \u68c0\u67e5\u662f\u5426\u662f\u7c7b\u522b\u5b58\u6863\u9875\u9762\u3002<\/li>\n<li> $is_tag\uff1a\u68c0\u67e5\u662f\u5426\u662f\u6807\u7b7e\u5b58\u6863\u9875\u9762\u3002<\/li>\n<li> $is_tax\uff1a\u68c0\u67e5\u662f\u5426\u662f\u5206\u7c7b\u5b58\u6863\u9875\u9762\u3002<\/li>\n<li> $is_search\uff1a\u68c0\u67e5\u662f\u5426\u662f\u201c\u641c\u7d22\u7ed3\u679c\u201d\u9875\u9762\u3002<\/li>\n<li> $is_feed\uff1a\u68c0\u67e5\u662f\u5426\u662f feed\u3002<\/li>\n<li> $is_comment_feed\uff1a\u68c0\u67e5\u662f\u5426\u662f\u8bc4\u8bba\u63d0\u8981\u3002<\/li>\n<li> $is_trackback\uff1a\u68c0\u67e5\u662f\u5426\u662f\u5f15\u7528\u3002<\/li>\n<li> $is_home\uff1a\u68c0\u67e5\u662f\u5426\u662f\u535a\u5ba2\u4e3b\u9875\u9762\u3002<\/li>\n<li> $is_404\uff1a\u68c0\u67e5\u662f\u5426\u662f404\u9519\u8bef\u9875\u9762\u3002<\/li>\n<li> $is_comments_popup: \u68c0\u67e5\u662f\u5426\u662f\u8bc4\u8bba\u5f39\u51fa\u7a97\u53e3\u3002<\/li>\n<li> $is_admin: \u68c0\u67e5\u662f\u5426\u662f\u7ba1\u7406\u9762\u677f\u3002<\/li>\n<li> $is_attachment: \u68c0\u67e5\u662f\u5426\u662f\u9644\u4ef6\u3002<\/li>\n<li> $is_singular\uff1a\u68c0\u67e5\u662f\u5426\u662f\u4efb\u4f55\u5e16\u5b50\u7c7b\u578b\uff08\u5305\u62ec\u201c\u9644\u4ef6\u201d\u548c\u201c\u9875\u9762\u201d\u5e16\u5b50\u7c7b\u578b\uff09\u7684\u5355\u4e2a\u5e16\u5b50\u3002<\/li>\n<li> $is_robots\uff1a\u68c0\u67e5\u662f\u5426\u662f\u5bf9 robots.txt \u6587\u4ef6\u7684\u67e5\u8be2\u3002<\/li>\n<li> $is_posts_page\uff1a\u68c0\u67e5\u662f\u5426\u662f\u201c\u5e16\u5b50\u9875\u9762\u201d\uff08\u5728\u7ba1\u7406\u9762\u677f\u7684\u201c\u9605\u8bfb\u8bbe\u7f6e\u201d\u9875\u9762\u4e0a\u8bbe\u7f6e\uff09\u3002<\/li>\n<li> $is_paged\uff1a\u68c0\u67e5\u662f\u5426\u662f\u5206\u9875\u67e5\u8be2\u4e14\u4e0d\u662f\u9996\u9875\u3002<\/li>\n<\/ul>\n<h2>WP_Query \u7c7b\u7684\u65b9\u6cd5<\/h2>\n<p>\u73b0\u5728\u6211\u4eec\u5df2\u7ecf\u5b8c\u6210\u4e86\u5c5e\u6027\uff0c\u8ba9\u6211\u4eec\u7ee7\u7eed\u8ba8\u8bba WP_Query \u7c7b\u7684\u65b9\u6cd5\uff08\u51fd\u6570\uff09\u3002<\/p>\n<h3>init()<\/h3>\n<p>\u6b64\u65b9\u6cd5\u53ea\u662f\u521d\u59cb\u5316\u5bf9\u8c61\uff0c\u5c06\u6240\u6709\u5c5e\u6027\u8bbe\u7f6e\u4e3a NULL\u30010 \u6216 FALSE\u3002<\/p>\n<h3>parse_query( $query )<\/h3>\n<p>\u6b64\u65b9\u6cd5\u4f7f\u7528 $query \u5c5e\u6027\u6765\u89e3\u6790\u67e5\u8be2\u5e76\u586b\u5145\u6240\u6709\u5176\u4ed6\u5c5e\u6027\uff08\u9664\u4e86 $posts\u3001$post_count\u3001$post \u548c $current_post\uff09\u3002<\/p>\n<h3>parse_query_vars()<\/h3>\n<p>\u6b64\u65b9\u6cd5\u91cd\u65b0\u89e3\u6790\u67e5\u8be2\u53d8\u91cf\u3002<\/p>\n<h3>get( $query_var )<\/h3>\n<p>\u6b64\u65b9\u6cd5\u83b7\u53d6\u7ed9\u5b9a\u7684\u67e5\u8be2\u53d8\u91cf\u3002<\/p>\n<h3>\u8bbe\u7f6e( $query_var, $value )<\/h3>\n<p>\u6b64\u65b9\u6cd5\u5c06\u7ed9\u5b9a\u7684\u67e5\u8be2\u53d8\u91cf\u8bbe\u7f6e\u4e3a\u7279\u5b9a\u503c\u3002<\/p>\n<h3>&amp;get_posts()<\/h3>\n<p>\u6b64\u65b9\u6cd5\u8fd4\u56de\u67e5\u8be2\u8bf7\u6c42\u7684\u5e16\u5b50\u5e76\u586b\u5145 $posts \u548c $post_count \u5c5e\u6027\u3002<\/p>\n<h3>next_post()<\/h3>\n<p>\u6b64\u65b9\u6cd5\u589e\u52a0 $current_post \u7d22\u5f15\u5e76\u524d\u8fdb\u5230 $posts \u4e2d\u7684\u4e0b\u4e00\u7bc7\u6587\u7ae0\uff0c\u8fd4\u56de\u5f53\u524d\u7684\u6587\u7ae0\u5bf9\u8c61\u3002 \uff08\u6b64\u65b9\u6cd5\u5fc5\u987b\u5728\u5faa\u73af\u5185\u4f7f\u7528\u624d\u80fd\u6b63\u5e38\u5de5\u4f5c\u3002\uff09<\/p>\n<h3>the_post()<\/h3>\n<p>\u6b64\u65b9\u6cd5\u4f7f\u7528\u4e0b\u4e00\u7bc7\u6587\u7ae0\u7684\u6570\u636e\u8bbe\u7f6e\u5168\u5c40 $post \u53d8\u91cf\u3002 \uff08\u6b64\u65b9\u6cd5\u5fc5\u987b\u5728\u5faa\u73af\u5185\u4f7f\u7528\u624d\u80fd\u6b63\u5e38\u5de5\u4f5c\u3002\uff09<\/p>\n<h3>have_posts()<\/h3>\n<p>\u6b64\u65b9\u6cd5\u68c0\u67e5\u662f\u5426\u8fd8\u6709\u4efb\u4f55\u5e16\u5b50\u9700\u8981\u5904\u7406\uff0c\u5982\u679c\u6ca1\u6709\uff0c\u5219\u8fd4\u56de FALSE\u3002 \uff08\u6b64\u65b9\u6cd5\u5fc5\u987b\u5728\u5faa\u73af\u4e4b\u524d\u4f7f\u7528\u624d\u80fd\u6b63\u5e38\u5de5\u4f5c\u3002\uff09<\/p>\n<h3>rewind_posts()<\/h3>\n<p>\u6b64\u65b9\u6cd5\u53ea\u662f\u91cd\u7f6e $current_post \u548c $post \u5c5e\u6027\u3002<\/p>\n<h3>&amp;query( $query )<\/h3>\n<p>\u8be5\u65b9\u6cd5\u8c03\u7528\u5b83\u7684\u4e24\u4e2a\u540c\u7ea7\u65b9\u6cd5\uff1aparse_query() \u548c get_posts()\uff0c\u5e76\u8fd4\u56de get_posts() \u7684\u7ed3\u679c\u3002<\/p>\n<h3>get_queried_object()<\/h3>\n<p>\u8be5\u65b9\u6cd5\u8fd4\u56de\u67e5\u8be2\u7684\u5bf9\u8c61\u3002 \uff08\u5982\u679c\u5c1a\u672a\u8bbe\u7f6e\uff0c\u5219\u8bbe\u7f6e 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