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  • PHP header location not working after login
    PHP header location not working after login
    Common reasons and solutions for PHP's header jump does not take effect after login: 1. The output occurs in advance, including spaces, HTML or function output. You need to check the blanks before and after the script and use ob_start(); 2. The session_start() is not placed at the beginning of the script or the session lock causes problems. You should ensure that it jumps after the initial call and the data is written. 3. The browser cache or script interrupt affects the jump. It is recommended to add exit, clear cache and use developer tools to troubleshoot; 4. Pay attention to problems such as UTF-8BOM characters, redundant spaces in include files, and server configuration restrictions.
    PHP Tutorial . Backend Development 154 2025-07-17 04:13:10
  • Is PHP syntax easy?
    Is PHP syntax easy?
    Yes,PHPsyntaxiseasy,especiallyforbeginners,becauseitisapproachable,integrateswellwithHTML,andrequiresminimalsetup.Itssyntaxisstraightforward,allowingdirectembeddingintoHTMLwithtags,using$forvariables,semicolonsforstatements,andfamiliarC-stylestructur
    PHP Tutorial . Backend Development 198 2025-07-17 04:12:50
  • Introduction to PHP Arrays
    Introduction to PHP Arrays
    PHP arrays are containers that store multiple values, and support two forms: index arrays and associative arrays. 1. The index array uses numeric keys, which are suitable for sequential storage, such as: $fruits=array("apple","banana","orange"); 2. The associative array uses string keys, which are suitable for describing data with clear meaning, such as: $person=array("name"=>"John","age"=>25). Values can be accessed or modified directly through keys, such as: echo$pers
    PHP Tutorial . Backend Development 553 2025-07-17 04:12:31
  • How to share a session across subdomains in PHP?
    How to share a session across subdomains in PHP?
    Implementing session sharing across subdomains in PHP, first, you need to set a unified Session domain name, use session_set_cookie_params() to set domain to .yourdomain.com, to ensure that different subdomains share the same session ID; secondly, you need to ensure that all subdomains use the same Session name (such as session_name('MYSESSION')) and a consistent storage path (such as Redis or database); secondly, when enabling HTTPS, secure must be set to true, and AJAX cross-domain requests are processed, and the backend adds Access-Control-Allow-Crede
    PHP Tutorial . Backend Development 159 2025-07-17 04:12:11
  • Understanding PHP Variable Types
    Understanding PHP Variable Types
    PHP has 8 variable types, commonly used include Integer, Float, String, Boolean, Array, Object, NULL and Resource. To view variable types, use the gettype() or is_type() series functions. PHP will automatically convert types, but it is recommended to use === to strictly compare the key logic. Manual conversion can be used for syntax such as (int), (string), etc., but be careful that information may be lost.
    PHP Tutorial . Backend Development 289 2025-07-17 04:12:01
  • Understanding PHP Variables
    Understanding PHP Variables
    PHP variables start with $, and the naming must follow rules, such as they cannot start with numbers and are case sensitive; the scope of the variable is divided into local, global and hyperglobal; global variables can be accessed using global, but it is recommended to pass them with parameters; mutable variables and reference assignments should be used with caution. Variables are the basis for storing data, and correctly mastering their rules and mechanisms is crucial to development.
    PHP Tutorial . Backend Development 177 2025-07-17 04:11:40
  • Your First PHP Script
    Your First PHP Script
    The key to writing the first PHP script is to understand its basic structure and how it runs. 1. Build a development environment to install XAMPP, WAMP or MAMP, including Apache, MySQL and PHP; 2. Create a .php file, such as hello.php and write it, place it in the http://localhost/hello.php directory and access http://localhost/hello.php through the browser to view the results; 3. The PHP code needs to be wrapped between tags, and the statement ends with a semicolon; 4. PHP can be embedded in the HTML page, such as using the date() function to dynamically display the time, so as to achieve dynamic generation of web page content. After mastering these basics, you can gradually expand the functions.
    PHP Tutorial . Backend Development 170 2025-07-17 04:11:21
  • Exploring Basic PHP Syntax
    Exploring Basic PHP Syntax
    The basic PHP syntax includes: 1. Use wrapping code; 2. Use echo or print to output content, where echo supports multiple parameters; 3. Variables do not need to declare types, start with $. Common types include strings, integers, floating-point numbers, booleans, arrays and objects. Mastering these key points can help you get started with PHP development quickly.
    PHP Tutorial . Backend Development 635 2025-07-17 04:11:00
  • The Ultimate Guide to PHPDoc and PHP DocBlocks
    The Ultimate Guide to PHPDoc and PHP DocBlocks
    PHPDoc and DocBlock are standard formats and multi-line comment blocks used in PHP development for annotating code. They improve code readability and maintenance through tags such as @param, @return, etc. 1. They help enhance code readability and facilitate team collaboration; 2. Improve IDE's intelligent prompt functions, such as automatic completion and parameter prompts; 3. Support generation of API documents for easy connection; 4. Provide type information for static analysis tools and strengthen code inspection. Common tags include @param describing parameters, @return indicating the return value, @var annotation of variable type, @throws indicating possible exceptions, @deprecated marks discarded elements, @see and @link provide the
    PHP Tutorial . Backend Development 249 2025-07-17 04:10:40
  • How to Write Effective Comments in Your PHP Projects
    How to Write Effective Comments in Your PHP Projects
    Writing clear comments can improve collaboration efficiency and facilitate subsequent maintenance, because comments are not only the instruction manual for others, but also the key to quickly understand the code in the future. Common problems include only writing "TODO" without explanation, function without parameters and return value description, complex logic without explanation, etc. Use PHPDoc specification function annotations to clarify parameter types, uses and return formats, and support IDE automatic completion and document generation. The comments in the line should explain "why did this" rather than "what did", and especially explain the background of special treatments. File headers and module comments help to quickly understand the file structure and functions, and it is recommended to include information such as authors and creation time. Comments should focus on quality rather than quantity, and key logic explanations are more valuable than pile up nonsense.
    PHP Tutorial . Backend Development 249 2025-07-17 04:10:20
  • Running Your First PHP Script
    Running Your First PHP Script
    To run the first PHP script, you must first build a server environment, and then write basic code to test and run. 1. Locally install integrated environments such as XAMPP, WAMP or MAMP; 2. Use PHP that comes with Mac or Linux system; 3. Run code through an online PHP editor; 4. Place the PHP file in the server directory such as http://htdocs; 5. Write the included .php file; 6. Visit http://localhost/test/index.php through the browser to view the results; 7. Pay attention to check whether the server is running, whether the path is correct and whether the syntax is wrong; 8. You can try to output time or process forms and deepen your understanding.
    PHP Tutorial . Backend Development 438 2025-07-17 04:09:10
  • Common PHP Variable Mistakes
    Common PHP Variable Mistakes
    Common errors in using PHP variables include undefined variables, improper reference assignment, improper type comparison, and confusing global variables. 1. Ignoring that the undefined variable will cause an Notice error. You should use isset() or empty() to check; 2. Reference assignment modification will affect other variables, and you should clean up unset() after the loop; 3. Using == will lead to automatic conversion of types, and you should use === for congruent judgments; 4. Global variables are prone to confusion, and it is recommended to avoid or encapsulate them into class attributes to improve code clarity.
    PHP Tutorial . Backend Development 191 2025-07-17 04:08:40
  • Naming Your PHP Variables
    Naming Your PHP Variables
    PHP variable naming should follow the principles of clear and accurate to improve code readability and maintenance efficiency. 1.使用描述性詞匯代替縮寫，如$user代替$u；2.布爾值加狀態(tài)詞前綴，如$isvisible、$hasPermission；3.數(shù)組和集合使用復數(shù)形式，如$users、$orders；4.避免模糊詞，選用具體表達實際內(nèi)容的詞匯，如$userData代替$data。
    PHP Tutorial . Backend Development 986 2025-07-17 04:08:31
  • Clean Code and Comments in PHP
    Clean Code and Comments in PHP
    Comments are an important part of CleanCode because they explain the intent behind the code rather than repeating the code. Good comments should appear in complex logic, non-intuitive conditional judgments, public API definitions, and to-dos; avoid meaningless descriptions, focus on explaining "why" and keeping them updated while using full sentence expressions. PHP supports three annotation formats: single line, multi-line and docblock. Docblock is not only beautiful, but can also be recognized by the IDE to improve team collaboration efficiency. Following framework specifications also contribute to project unity. Writing comments is not to make up the number of words, but to improve the readability and maintenance of the code and save future understanding costs.
    PHP Tutorial . Backend Development 411 2025-07-17 04:08:11

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