{"id":21741,"date":"2024-03-15T22:32:17","date_gmt":"2024-03-15T22:32:17","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-connect-a-php-login-page-with-a-database\/"},"modified":"2024-03-21T21:12:39","modified_gmt":"2024-03-21T21:12:39","slug":"how-to-connect-a-php-login-page-with-a-database","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-connect-a-php-login-page-with-a-database\/","title":{"rendered":"How to connect a PHP login page with a database?"},"content":{"rendered":"<p>To connect to the database, you can use either the MySQLi or PDO extension in PHP.<\/p>\n<p>An example using the MySQLi extension:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">&lt;?php<\/span>\r\n<span class=\"hljs-comment\">\/\/ \u6570\u636e\u5e93\u8fde\u63a5\u53c2\u6570<\/span>\r\n<span class=\"hljs-variable\">$servername<\/span> = <span class=\"hljs-string\">\"localhost\"<\/span>;\r\n<span class=\"hljs-variable\">$username<\/span> = <span class=\"hljs-string\">\"your_username\"<\/span>;\r\n<span class=\"hljs-variable\">$password<\/span> = <span class=\"hljs-string\">\"your_password\"<\/span>;\r\n<span class=\"hljs-variable\">$dbname<\/span> = <span class=\"hljs-string\">\"your_database\"<\/span>;\r\n\r\n<span class=\"hljs-comment\">\/\/ \u521b\u5efa\u8fde\u63a5<\/span>\r\n<span class=\"hljs-variable\">$conn<\/span> = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title function_ invoke__\">mysqli<\/span>(<span class=\"hljs-variable\">$servername<\/span>, <span class=\"hljs-variable\">$username<\/span>, <span class=\"hljs-variable\">$password<\/span>, <span class=\"hljs-variable\">$dbname<\/span>);\r\n\r\n<span class=\"hljs-comment\">\/\/ \u68c0\u67e5\u8fde\u63a5\u662f\u5426\u6210\u529f<\/span>\r\n<span class=\"hljs-keyword\">if<\/span> (<span class=\"hljs-variable\">$conn<\/span>-&gt;connect_error) {\r\n    <span class=\"hljs-keyword\">die<\/span>(<span class=\"hljs-string\">\"\u8fde\u63a5\u5931\u8d25: \"<\/span> . <span class=\"hljs-variable\">$conn<\/span>-&gt;connect_error);\r\n}\r\n\r\n<span class=\"hljs-comment\">\/\/ \u6267\u884c\u6570\u636e\u5e93\u64cd\u4f5c<\/span>\r\n<span class=\"hljs-comment\">\/\/ ...<\/span>\r\n\r\n<span class=\"hljs-comment\">\/\/ \u5173\u95ed\u8fde\u63a5<\/span>\r\n<span class=\"hljs-variable\">$conn<\/span>-&gt;<span class=\"hljs-title function_ invoke__\">close<\/span>();\r\n<span class=\"hljs-meta\">?&gt;<\/span>\r\n<\/code><\/pre>\n<p>Example of using PDO extension:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">&lt;?php<\/span>\r\n<span class=\"hljs-comment\">\/\/ \u6570\u636e\u5e93\u8fde\u63a5\u53c2\u6570<\/span>\r\n<span class=\"hljs-variable\">$servername<\/span> = <span class=\"hljs-string\">\"localhost\"<\/span>;\r\n<span class=\"hljs-variable\">$username<\/span> = <span class=\"hljs-string\">\"your_username\"<\/span>;\r\n<span class=\"hljs-variable\">$password<\/span> = <span class=\"hljs-string\">\"your_password\"<\/span>;\r\n<span class=\"hljs-variable\">$dbname<\/span> = <span class=\"hljs-string\">\"your_database\"<\/span>;\r\n\r\n<span class=\"hljs-keyword\">try<\/span> {\r\n    <span class=\"hljs-comment\">\/\/ \u521b\u5efa\u8fde\u63a5<\/span>\r\n    <span class=\"hljs-variable\">$conn<\/span> = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title function_ invoke__\">PDO<\/span>(<span class=\"hljs-string\">\"mysql:host=<span class=\"hljs-subst\">$servername<\/span>;dbname=<span class=\"hljs-subst\">$dbname<\/span>\"<\/span>, <span class=\"hljs-variable\">$username<\/span>, <span class=\"hljs-variable\">$password<\/span>);\r\n    <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6ePDO\u9519\u8bef\u6a21\u5f0f\u4e3a\u5f02\u5e38<\/span>\r\n    <span class=\"hljs-variable\">$conn<\/span>-&gt;<span class=\"hljs-title function_ invoke__\">setAttribute<\/span>(PDO::<span class=\"hljs-variable constant_\">ATTR_ERRMODE<\/span>, PDO::<span class=\"hljs-variable constant_\">ERRMODE_EXCEPTION<\/span>);\r\n    <span class=\"hljs-keyword\">echo<\/span> <span class=\"hljs-string\">\"\u8fde\u63a5\u6210\u529f\"<\/span>;\r\n} <span class=\"hljs-keyword\">catch<\/span>(PDOException <span class=\"hljs-variable\">$e<\/span>) {\r\n    <span class=\"hljs-keyword\">echo<\/span> <span class=\"hljs-string\">\"\u8fde\u63a5\u5931\u8d25: \"<\/span> . <span class=\"hljs-variable\">$e<\/span>-&gt;<span class=\"hljs-title function_ invoke__\">getMessage<\/span>();\r\n}\r\n\r\n<span class=\"hljs-comment\">\/\/ \u6267\u884c\u6570\u636e\u5e93\u64cd\u4f5c<\/span>\r\n<span class=\"hljs-comment\">\/\/ ...<\/span>\r\n\r\n<span class=\"hljs-comment\">\/\/ \u5173\u95ed\u8fde\u63a5<\/span>\r\n<span class=\"hljs-variable\">$conn<\/span> = <span class=\"hljs-literal\">null<\/span>;\r\n<span class=\"hljs-meta\">?&gt;<\/span>\r\n<\/code><\/pre>\n<p>In the code above, you need to replace your_username, your_password, and your_database with your actual database connection parameters.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>To connect to the database, you can use either the MySQLi or PDO extension in PHP. An example using the MySQLi extension: &lt;?php \/\/ \u6570\u636e\u5e93\u8fde\u63a5\u53c2\u6570 $servername = &#8220;localhost&#8221;; $username = &#8220;your_username&#8221;; $password = &#8220;your_password&#8221;; $dbname = &#8220;your_database&#8221;; \/\/ \u521b\u5efa\u8fde\u63a5 $conn = new mysqli($servername, $username, $password, $dbname); \/\/ \u68c0\u67e5\u8fde\u63a5\u662f\u5426\u6210\u529f if ($conn-&gt;connect_error) { die(&#8220;\u8fde\u63a5\u5931\u8d25: &#8221; . $conn-&gt;connect_error); [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-21741","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"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>How to connect a PHP login page with a database? - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-to-connect-a-php-login-page-with-a-database\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to connect a PHP login page with a database?\" \/>\n<meta property=\"og:description\" content=\"To connect to the database, you can use either the MySQLi or PDO extension in PHP. An example using the MySQLi extension: &lt;?php \/\/ \u6570\u636e\u5e93\u8fde\u63a5\u53c2\u6570 $servername = &quot;localhost&quot;; $username = &quot;your_username&quot;; $password = &quot;your_password&quot;; $dbname = &quot;your_database&quot;; \/\/ \u521b\u5efa\u8fde\u63a5 $conn = new mysqli($servername, $username, $password, $dbname); \/\/ \u68c0\u67e5\u8fde\u63a5\u662f\u5426\u6210\u529f if ($conn-&gt;connect_error) { die(&quot;\u8fde\u63a5\u5931\u8d25: &quot; . $conn-&gt;connect_error); [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-to-connect-a-php-login-page-with-a-database\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-15T22:32:17+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-21T21:12:39+00:00\" \/>\n<meta name=\"author\" content=\"Olivia Parker\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Olivia Parker\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-connect-a-php-login-page-with-a-database\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-connect-a-php-login-page-with-a-database\/\"},\"author\":{\"name\":\"Olivia Parker\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/3ff7b3da0e45ac5dbbef2502f3cea8d9\"},\"headline\":\"How to connect a PHP login page with a database?\",\"datePublished\":\"2024-03-15T22:32:17+00:00\",\"dateModified\":\"2024-03-21T21:12:39+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-connect-a-php-login-page-with-a-database\/\"},\"wordCount\":58,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-connect-a-php-login-page-with-a-database\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-to-connect-a-php-login-page-with-a-database\/\",\"name\":\"How to connect a PHP login page with a database? 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