This article provides a detailed explanation of the header() function in PHP, covering how to use it for page redirection, setting Content-Type, controlling HTTP status, and managing cache.

This article demonstrates how to use the highlight_file() function along with header() to correctly set the Content-Type header, ensuring proper rendering of syntax-highlighted PHP code in the browser.

File download is one of the common requirements in web applications. Through PHP's header() function, you can push files to the browser and trigger the user's file download operation. This article will introduce in detail how to implement file download function through PHP's header() function, and explain how the front-end triggers requests and how the back-end uses the header() function to push files to the browser.

In web development, page jumping is a very common operation. In most cases, we will use JavaScript to achieve jumps, or use PHP's header() function to jumps. However, these two jump methods are different in terms of implementation methods, applicable scenarios and impact on user experience. This article will compare these two jump methods to explore the differences between them and suitable application scenarios.

The header() function is a crucial tool for sending raw HTTP headers to the client. It allows you to control caching, redirection, content types, and more. Meanwhile, the headers_list() function helps inspect all HTTP headers that have been set so far, which is incredibly useful for debugging and understanding application behavior.

The header() function is used to send original HTTP header information, such as redirecting, setting cookies, modifying content types, etc. However, HTTP header information must be sent before any actual output (such as HTML, echo, print, etc.) or an error will be thrown. This is because once the output starts, PHP will automatically send the HTTP header.

In PHP programming, the header() function is a very common tool used to send raw HTTP header information to the client, such as setting redirects, specifying content types, cache control, etc. However, can the header() function still work when we run the PHP script in mode? This article will give you a detailed answer.

During PHP development, the header function is often used to set HTTP header information, such as redirection, content type, cache control, etc. Since the header function directly affects the HTTP header information of the response, it is important to ensure that it outputs correctly during debugging. Through the browser's developer tools, you can effectively check whether the header function is output correctly.

In PHP programming, the header() function is usually used to send raw HTTP headers, especially when performing page redirects. Common usages include page redirection, content type settings, etc. Although the header() function is powerful, in actual development, developers often encounter the problem that the set HTTP header is not effective. This article will explore how to check and debug the settings of the header() function in PHP to ensure that it takes effect correctly.

If we want to generate an Excel file for users to download, the commonly used method is to use the header() function to set the correct HTTP header. This article will introduce how to set up Excel export using header(), and explain some notes about MIME types and character encoding.

In web development, sometimes we need to dynamically generate a CSV report through the backend and provide it to users to download, instead of putting it on the server for download. The header() function of PHP can be used to modify the HTTP response header and combine it with the output content to achieve this "simulated download" effect.

In web development, users usually need to redirect pages when the user logs in. Usually this operation is done through the header() function. The header() function can send the original HTTP header information, and after the user logs out, it can use it to jump the page. This article will introduce how to use PHP's header() function to achieve automatic redirection after user logout.

Security is crucial when developing APIs. To ensure that only authorized users can access specific resources, we usually use the Token mechanism for authentication and permission control. In PHP, the header() function is usually used to send HTTP header information and can be used to handle Token verification. This article will introduce how to use PHP's header() function to cooperate with Token for API permission control.

In web development, the performance of the website is crucial. Browser caching is an important factor in improving website performance. Rational use of browser cache can greatly reduce website loading time, improve user experience, and reduce server burden. This article will explain how to use PHP's header() function to control browser caching and improve site performance by setting appropriate caching strategies.

Clickjacking is a malicious technology that unwittingly clicks on certain content on the web page controlled by the attacker by embedding web pages into transparent iframes. To prevent this attack, we can prevent the page from being nested into the iframe through HTTP header information.

In modern web development, ensuring the security of websites is an essential responsibility of developers. Browsers provide many mechanisms that enhance website security by setting specific HTTP headers, such as X-Frame-Options, X-Content-Type-Options, and Strict-Transport-Security. These headers help prevent attacks like clickjacking, MIME type sniffing, and cross-site scripting (XSS).

How to Implement a Hotlink Protection Mechanism Using header() for Browser Redirects

If you want to display images through the browser or generate dynamic images (such as verification code), you need to use the header() function to set the response header to tell the browser that it is returning an image type, not a normal text or HTML page.

When developing web applications, the RESTful API has become a widely used architectural style, following the standard HTTP protocol to provide flexible and extensible interfaces. By using HTTP response headers correctly, developers can control the behavior and response content of the interface, enhancing the interactivity and security of the interface.

In modern web development, APIs are the key to implementing data exchange between different applications, and the transmission of JSON format is the most common data format because of its simplicity and efficiency. PHP provides a variety of ways to process and return JSON data, where the header() function and the json_encode() function are the most commonly used combinations.