{"id":22064,"date":"2024-03-15T22:59:23","date_gmt":"2024-03-15T22:59:23","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/"},"modified":"2024-03-21T21:58:58","modified_gmt":"2024-03-21T21:58:58","slug":"how-can-php-retrieve-database-content","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/","title":{"rendered":"How can PHP retrieve database content?"},"content":{"rendered":"<p>In PHP, you can read database content using the following steps:<\/p>\n<ol>\n<li>Connect to the database: use extension libraries such as MySQLi or PDO to establish a connection with the database. For example, use the MySQLi extension library to connect to a MySQL database.<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><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\">$conn<\/span>-&gt;connect_error);\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>Execute an SQL query: Use SQL statements to perform a query in the database. For example, select all rows from a table named &#8220;users&#8221;.<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-variable\">$sql<\/span> = <span class=\"hljs-string\">\"SELECT * FROM users\"<\/span>;\r\n<span class=\"hljs-variable\">$result<\/span> = <span class=\"hljs-variable\">$conn<\/span>-&gt;<span class=\"hljs-title function_ invoke__\">query<\/span>(<span class=\"hljs-variable\">$sql<\/span>);\r\n\r\n<span class=\"hljs-keyword\">if<\/span> (<span class=\"hljs-variable\">$result<\/span>-&gt;num_rows &gt; <span class=\"hljs-number\">0<\/span>) {\r\n    <span class=\"hljs-comment\">\/\/ \u8f93\u51fa\u6570\u636e<\/span>\r\n    <span class=\"hljs-keyword\">while<\/span>(<span class=\"hljs-variable\">$row<\/span> = <span class=\"hljs-variable\">$result<\/span>-&gt;<span class=\"hljs-title function_ invoke__\">fetch_assoc<\/span>()) {\r\n        <span class=\"hljs-keyword\">echo<\/span> <span class=\"hljs-string\">\"ID: \"<\/span> . <span class=\"hljs-variable\">$row<\/span>[<span class=\"hljs-string\">\"id\"<\/span>]. <span class=\"hljs-string\">\" - Name: \"<\/span> . <span class=\"hljs-variable\">$row<\/span>[<span class=\"hljs-string\">\"name\"<\/span>]. <span class=\"hljs-string\">\" - Email: \"<\/span> . <span class=\"hljs-variable\">$row<\/span>[<span class=\"hljs-string\">\"email\"<\/span>]. <span class=\"hljs-string\">\"&lt;br&gt;\"<\/span>;\r\n    }\r\n} <span class=\"hljs-keyword\">else<\/span> {\r\n    <span class=\"hljs-keyword\">echo<\/span> <span class=\"hljs-string\">\"0 \u7ed3\u679c\"<\/span>;\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>Close the database connection: After completing database operations, close the database connection to release resources.<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-variable\">$conn<\/span>-&gt;<span class=\"hljs-title function_ invoke__\">close<\/span>();\r\n<\/code><\/pre>\n<p>The code above selects all rows from the &#8220;users&#8221; table and outputs the ID, name, and email for each row.<\/p>\n<p>Please note that the above examples use the MySQLi extension library. If you are using the PDO extension library, the code may be different, but the basic concept is the same.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In PHP, you can read database content using the following steps: Connect to the database: use extension libraries such as MySQLi or PDO to establish a connection with the database. For example, use the MySQLi extension library to connect to a MySQL database. $servername = &#8220;localhost&#8221;; $username = &#8220;your_username&#8221;; $password = &#8220;your_password&#8221;; $dbname = &#8220;your_database&#8221;; [&hellip;]<\/p>\n","protected":false},"author":7,"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-22064","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 can PHP retrieve database content? - 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-can-php-retrieve-database-content\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How can PHP retrieve database content?\" \/>\n<meta property=\"og:description\" content=\"In PHP, you can read database content using the following steps: Connect to the database: use extension libraries such as MySQLi or PDO to establish a connection with the database. For example, use the MySQLi extension library to connect to a MySQL database. $servername = &quot;localhost&quot;; $username = &quot;your_username&quot;; $password = &quot;your_password&quot;; $dbname = &quot;your_database&quot;; [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/\" \/>\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=\"2024-03-15T22:59:23+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-21T21:58:58+00:00\" \/>\n<meta name=\"author\" content=\"Sophia Anderson\" \/>\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=\"Sophia Anderson\" \/>\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-can-php-retrieve-database-content\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/\"},\"author\":{\"name\":\"Sophia Anderson\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/19a24313de9c988db3d69226b4a40a30\"},\"headline\":\"How can PHP retrieve database content?\",\"datePublished\":\"2024-03-15T22:59:23+00:00\",\"dateModified\":\"2024-03-21T21:58:58+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/\"},\"wordCount\":139,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/\",\"name\":\"How can PHP retrieve database content? - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#website\"},\"datePublished\":\"2024-03-15T22:59:23+00:00\",\"dateModified\":\"2024-03-21T21:58:58+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.silicloud.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"How can PHP retrieve database content?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/blog\/\",\"name\":\"Silicon Cloud Blog\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\",\"name\":\"Silicon Cloud Blog\",\"url\":\"https:\/\/www.silicloud.com\/blog\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/wp-content\/uploads\/2023\/11\/EN-SILICON-Full.png\",\"contentUrl\":\"https:\/\/www.silicloud.com\/blog\/wp-content\/uploads\/2023\/11\/EN-SILICON-Full.png\",\"width\":1024,\"height\":1024,\"caption\":\"Silicon Cloud Blog\"},\"image\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\",\"https:\/\/twitter.com\/SiliCloudGlobal\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/19a24313de9c988db3d69226b4a40a30\",\"name\":\"Sophia Anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/c726c09aa40e37115fb5c62d0c3ed62c16ca255d3763e2e3ae83a70ddf8c2175?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/c726c09aa40e37115fb5c62d0c3ed62c16ca255d3763e2e3ae83a70ddf8c2175?s=96&d=mm&r=g\",\"caption\":\"Sophia Anderson\"},\"url\":\"https:\/\/www.silicloud.com\/blog\/author\/sophiaanderson\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"How can PHP retrieve database content? - Blog - Silicon Cloud","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/","og_locale":"en_US","og_type":"article","og_title":"How can PHP retrieve database content?","og_description":"In PHP, you can read database content using the following steps: Connect to the database: use extension libraries such as MySQLi or PDO to establish a connection with the database. For example, use the MySQLi extension library to connect to a MySQL database. $servername = \"localhost\"; $username = \"your_username\"; $password = \"your_password\"; $dbname = \"your_database\"; [&hellip;]","og_url":"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/","og_site_name":"Blog - Silicon Cloud","article_publisher":"https:\/\/www.facebook.com\/SiliCloudGlobal\/","article_published_time":"2024-03-15T22:59:23+00:00","article_modified_time":"2024-03-21T21:58:58+00:00","author":"Sophia Anderson","twitter_card":"summary_large_image","twitter_creator":"@SiliCloudGlobal","twitter_site":"@SiliCloudGlobal","twitter_misc":{"Written by":"Sophia Anderson","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/#article","isPartOf":{"@id":"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/"},"author":{"name":"Sophia Anderson","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/19a24313de9c988db3d69226b4a40a30"},"headline":"How can PHP retrieve database content?","datePublished":"2024-03-15T22:59:23+00:00","dateModified":"2024-03-21T21:58:58+00:00","mainEntityOfPage":{"@id":"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/"},"wordCount":139,"commentCount":0,"publisher":{"@id":"https:\/\/www.silicloud.com\/blog\/#organization"},"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/","url":"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/","name":"How can PHP retrieve database content? - Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/blog\/#website"},"datePublished":"2024-03-15T22:59:23+00:00","dateModified":"2024-03-21T21:58:58+00:00","breadcrumb":{"@id":"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.silicloud.com\/blog\/how-can-php-retrieve-database-content\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.silicloud.com\/blog\/"},{"@type":"ListItem","position":2,"name":"How can PHP retrieve database content?"}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/blog\/#website","url":"https:\/\/www.silicloud.com\/blog\/","name":"Silicon Cloud Blog","description":"","publisher":{"@id":"https:\/\/www.silicloud.com\/blog\/#organization"},"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.silicloud.com\/blog\/#organization","name":"Silicon Cloud Blog","url":"https:\/\/www.silicloud.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.silicloud.com\/blog\/wp-content\/uploads\/2023\/11\/EN-SILICON-Full.png","contentUrl":"https:\/\/www.silicloud.com\/blog\/wp-content\/uploads\/2023\/11\/EN-SILICON-Full.png","width":1024,"height":1024,"caption":"Silicon Cloud Blog"},"image":{"@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/SiliCloudGlobal\/","https:\/\/twitter.com\/SiliCloudGlobal"]},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/19a24313de9c988db3d69226b4a40a30","name":"Sophia Anderson","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/c726c09aa40e37115fb5c62d0c3ed62c16ca255d3763e2e3ae83a70ddf8c2175?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/c726c09aa40e37115fb5c62d0c3ed62c16ca255d3763e2e3ae83a70ddf8c2175?s=96&d=mm&r=g","caption":"Sophia Anderson"},"url":"https:\/\/www.silicloud.com\/blog\/author\/sophiaanderson\/"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/posts\/22064","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/comments?post=22064"}],"version-history":[{"count":1,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/posts\/22064\/revisions"}],"predecessor-version":[{"id":55963,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/posts\/22064\/revisions\/55963"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/media?parent=22064"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/categories?post=22064"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/tags?post=22064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}