{"id":13651,"date":"2024-03-15T07:33:12","date_gmt":"2024-03-15T07:33:12","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-mysqli_num_rows-function-in-php\/"},"modified":"2025-08-05T21:35:12","modified_gmt":"2025-08-05T21:35:12","slug":"how-to-use-the-mysqli_num_rows-function-in-php","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-mysqli_num_rows-function-in-php\/","title":{"rendered":"PHP mysqli_num_rows: Count Rows Easily"},"content":{"rendered":"<p>In PHP, the mysqli_num_rows function is used to retrieve the number of rows in a result set. The usage is as follows:<\/p>\n<ol>\n<li>First, you need to create a mysqli object and connect to the database. For example:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-variable\">$conn<\/span> = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title function_ invoke__\">mysqli<\/span>(<span class=\"hljs-string\">\"localhost\"<\/span>, <span class=\"hljs-string\">\"username\"<\/span>, <span class=\"hljs-string\">\"password\"<\/span>, <span class=\"hljs-string\">\"database\"<\/span>);\r\n<\/code><\/pre>\n<ol>\n<li>Next, use the mysqli_query function to execute the SQL query and store the result in a variable. For example:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-variable\">$query<\/span> = <span class=\"hljs-string\">\"SELECT * FROM table\"<\/span>;\r\n<span class=\"hljs-variable\">$result<\/span> = <span class=\"hljs-title function_ invoke__\">mysqli_query<\/span>(<span class=\"hljs-variable\">$conn<\/span>, <span class=\"hljs-variable\">$query<\/span>);\r\n<\/code><\/pre>\n<ol>\n<li>Finally, use the mysqli_num_rows function to retrieve the number of rows in the result set. For example:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-variable\">$rowCount<\/span> = <span class=\"hljs-title function_ invoke__\">mysqli_num_rows<\/span>(<span class=\"hljs-variable\">$result<\/span>);\r\n<span class=\"hljs-keyword\">echo<\/span> <span class=\"hljs-string\">\"\u603b\u5171\u6709 \"<\/span> . <span class=\"hljs-variable\">$rowCount<\/span> . <span class=\"hljs-string\">\" \u884c\u6570\u636e\"<\/span>;\r\n<\/code><\/pre>\n<p>The complete sample code is shown below:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-variable\">$conn<\/span> = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title function_ invoke__\">mysqli<\/span>(<span class=\"hljs-string\">\"localhost\"<\/span>, <span class=\"hljs-string\">\"username\"<\/span>, <span class=\"hljs-string\">\"password\"<\/span>, <span class=\"hljs-string\">\"database\"<\/span>);\r\n<span class=\"hljs-variable\">$query<\/span> = <span class=\"hljs-string\">\"SELECT * FROM table\"<\/span>;\r\n<span class=\"hljs-variable\">$result<\/span> = <span class=\"hljs-title function_ invoke__\">mysqli_query<\/span>(<span class=\"hljs-variable\">$conn<\/span>, <span class=\"hljs-variable\">$query<\/span>);\r\n<span class=\"hljs-variable\">$rowCount<\/span> = <span class=\"hljs-title function_ invoke__\">mysqli_num_rows<\/span>(<span class=\"hljs-variable\">$result<\/span>);\r\n<span class=\"hljs-keyword\">echo<\/span> <span class=\"hljs-string\">\"\u603b\u5171\u6709 \"<\/span> . <span class=\"hljs-variable\">$rowCount<\/span> . <span class=\"hljs-string\">\" \u884c\u6570\u636e\"<\/span>;\r\n<\/code><\/pre>\n<p>Before using the mysqli_num_rows function, it is necessary to first execute the mysqli_query function to perform a query and retrieve the result set. Additionally, before using the mysqli_num_rows function, make sure that the database connection has been established.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In PHP, the mysqli_num_rows function is used to retrieve the number of rows in a result set. The usage is as follows: First, you need to create a mysqli object and connect to the database. For example: $conn = new mysqli(&#8220;localhost&#8221;, &#8220;username&#8221;, &#8220;password&#8221;, &#8220;database&#8221;); Next, use the mysqli_query function to execute the SQL query and [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[5712,284,298,16077,660],"class_list":["post-13651","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-count-rows","tag-database","tag-mysql","tag-mysqli_num_rows","tag-php"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PHP mysqli_num_rows: Count Rows Easily - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to use PHP&#039;s mysqli_num_rows to count result set rows quickly. 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