{"id":13216,"date":"2024-03-15T06:05:01","date_gmt":"2024-03-15T06:05:01","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-cache-control-parameter-in-the-header-function-in-php\/"},"modified":"2025-08-05T13:56:22","modified_gmt":"2025-08-05T13:56:22","slug":"how-to-use-the-cache-control-parameter-in-the-header-function-in-php","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-cache-control-parameter-in-the-header-function-in-php\/","title":{"rendered":"PHP Cache-control: Header Function Guide"},"content":{"rendered":"

In PHP, the header function can be used to set the Cache-control parameter in the response header. This parameter is used to control browser caching behavior. Below are some commonly used Cache-control parameters and their usage methods:<\/p>\n

    \n
  1. public: Indicates that the response can be stored by any cache.<\/li>\n<\/ol>\n
    header<\/span>(\"Cache-control: public\"<\/span>);\r\n<\/code><\/pre>\n
      \n
    1. Private: specifies that the response can only be cached by a single user, typically used for pages with personalized user information.<\/li>\n<\/ol>\n
      header<\/span>(\"Cache-control: private\"<\/span>);\r\n<\/code><\/pre>\n
        \n
      1. No-cache: Specifies that the browser must send a request to the server for validation before using the cache.<\/li>\n<\/ol>\n
        header<\/span>(\"Cache-control: no-cache\"<\/span>);\r\n<\/code><\/pre>\n
          \n
        1. no-store: specifies that the browser should not cache the response content.<\/li>\n<\/ol>\n
          header<\/span>(\"Cache-control: no-store\"<\/span>);\r\n<\/code><\/pre>\n
            \n
          1. The directive “must-revalidate” instructs the browser to send a request to the server for verification before using a cached response.<\/li>\n<\/ol>\n
            header<\/span>(\"Cache-control: must-revalidate\"<\/span>);\r\n<\/code><\/pre>\n
              \n
            1. max-age: specifies the maximum time (in seconds) that a response can be cached.<\/li>\n<\/ol>\n
              header<\/span>(\"Cache-control: max-age=3600\"<\/span>); \/\/ \u7f13\u5b581\u5c0f\u65f6<\/span>\r\n<\/code><\/pre>\n
                \n
              1. s-maxage: Similar to max-age, but only applicable to shared caches (such as CDNs).<\/li>\n<\/ol>\n
                header<\/span>(\"Cache-control: s-maxage=3600\"<\/span>); \/\/ \u7f13\u5b581\u5c0f\u65f6<\/span>\r\n<\/code><\/pre>\n
                  \n
                1. no-transform directive instructs the browser not to manipulate the response content, such as compressing it.<\/li>\n<\/ol>\n
                  header<\/span>(\"Cache-control: no-transform\"<\/span>);\r\n<\/code><\/pre>\n
                  You can choose the appropriate Cache-control parameter to control the behavior of browser caching based on your actual needs. Make sure to call the header function to set the response headers before any output.<\/p>\n","protected":false},"excerpt":{"rendered":"
                  In PHP, the header function can be used to set the Cache-control parameter in the response header. This parameter is used to control browser caching behavior. Below are some commonly used Cache-control parameters and their usage methods: public: Indicates that the response can be stored by any cache. header(“Cache-control: public”); Private: specifies that the response […]<\/p>\n","protected":false},"author":14,"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":[17535,17534,3379,660,2047],"class_list":["post-13216","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-browser-caching","tag-cache-control","tag-header-function","tag-php","tag-web-performance"],"yoast_head":"\nPHP Cache-control: Header Function Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to control browser caching in PHP using the header function and Cache-control parameter. Boost your website's performance!\" \/>\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-use-the-cache-control-parameter-in-the-header-function-in-php\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PHP Cache-control: Header Function Guide\" \/>\n<meta property=\"og:description\" content=\"Learn how to control browser caching in PHP using the header function and Cache-control parameter. 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