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  • Using Block Comments in PHP
    Using Block Comments in PHP
    Block comments are tools in PHP for multi-line comments, using /.../ to wrap content. It can be used to describe code functions, temporarily disable code segments, and add copyright information. When using it, you should pay attention to not nesting, avoiding missing ending symbols, and reasonably controlling the frequency of use to improve code readability and maintenance.
    PHP Tutorial . Backend Development 515 2025-07-15 02:04:11
  • Creating PHP Block Comments
    Creating PHP Block Comments
    Writing PHP block comments should be standardized and practical, and is suitable for instructions on large segments of structured code such as functions, classes, and file headers. 1. Usage scenarios include function description, class design intention, complex logical process, copyright information, etc.; 2. The standard format adopts /.../ package, follows the PSR-5 standard, summarizes the first line in one sentence, explains in detail after emptying the line, and uses @param, @return, @throws and other tags to explain the parameters and return values; 3. Practical suggestions include keeping the content concise, aligning and beautiful, avoiding redundancy, and regularly maintaining the consistency of annotations; 4. Common misunderstandings such as inconsistent annotations and code, ignoring the use of tags, and verbose content, you should use the IDE to automatically generate templates to improve efficiency. Standardized block annotations help improve code readability and teamwork
    PHP Tutorial . Backend Development 866 2025-07-15 02:03:51
  • How Do You Implement Routing in a PHP Application?
    How Do You Implement Routing in a PHP Application?
    ToimplementroutinginaPHPapplication,usethefrontcontrollerpatternwithindex.phpastheentrypoint.1)Configure.htaccesstoredirectalltraffictoindex.phpforcleanURLs.2)ParsetherequestURImanuallyusingconditionallogicorswitch-caseforsmallapps.3)Extractdynamicpa
    PHP Tutorial . Backend Development 416 2025-07-15 02:02:21
  • Mixing PHP and HTML
    Mixing PHP and HTML
    In web development, the key to the mixing of PHP and HTML is clear structure, logical separation and maintaining maintainability. 1. The basic writing method is to embed logic through PHP tags, used for dynamic content output and conditional control; 2. Avoid stuffing a large amount of PHP logic into HTML. It is recommended to execute logic first and then separate output to improve readability and collaboration efficiency; 3. If the server supports it, short tags can be used to simplify the output, but the deployment environment is uncertain, and complete syntax is recommended; 4. It is recommended to use HTML as a template, PHP logic is stored independently, and repeated fragments are encapsulated as functions, and supplemented by comments and format alignment to improve the overall code quality.
    PHP Tutorial . Backend Development 989 2025-07-15 01:53:01
  • PHP DocBlocks Explained
    PHP DocBlocks Explained
    PHP's DocBlock annotation is a structured annotation that starts with /* and ends with /. It can be recognized by IDE and tools to improve development efficiency. 1. It is used before classes, methods, properties or functions, and provides structured descriptions, such as describing the role of classes or methods; 2. Supports common tags, such as @param (parameter description), @return (return value), @var (variable type), @throws (exception) and @deprecated (discarded tags), to help clarify the intent of the code; 3. Automatic completion, type checking, document generation and other functions can be implemented in the IDE to enhance the readability and maintenance of the code; 4. When using it, keep the writing type in a concise and correct way, and use @inheritdoc and completeness reasonably.
    PHP Tutorial . Backend Development 523 2025-07-15 01:49:10
  • PHP cannot modify header information headers already sent
    PHP cannot modify header information headers already sent
    Answer: The error "Cannotmodifyheaderinformation–headersalreadysent" appears because the content output is already output before calling the header() function. 1. Common reasons include spaces, line breaks or BOM characters at the beginning of the PHP file, text or HTML output before the tag, echo, print or debug code in the file, and spaces after the end of the file. 2. The solution includes checking and removing the whitespace characters and BOM at the beginning of the PHP file, avoiding writing content before the tag, ensuring that the include file has no early output, followed by exit; or die(); and saving the file as none
    PHP Tutorial . Backend Development 703 2025-07-15 01:39:41
  • Working with PHP Loops
    Working with PHP Loops
    PHP provides a variety of loop structures suitable for different scenarios. 1. Foreach is the best choice for traversing arrays. The syntax is simple and not prone to errors. If you need to modify the array value, you can add reference symbols &;2.for is more suitable for loops with known times. It is suitable for generating a list of numbers or indexes to access array elements, but time-consuming operations should be avoided in the loop; 3. While and do...while are used to control loops according to conditions. The difference is that while first judge and then execute, do...while executes once and then judge; 4. Be careful to avoid dead loops and performance traps, such as the condition is always true, a large number of queries are executed in the loop, and forgets to update the counter, etc. It is recommended to use break to break out of the loop and process the big data set in chunks.
    PHP Tutorial . Backend Development 748 2025-07-15 01:38:20
  • PHP strtok example for tokenizing a string
    PHP strtok example for tokenizing a string
    ThePHPfunctionstrtok()isusedtosplitastringintotokensbasedonspecifieddelimiters,processingthestringstepbystep.1.Itworksbyinitializingwiththestringanddelimiter,thensubsequentcallswithoutthestringretrieveeachtokensequentially.2.Unlikeexplode(),itdoesnot
    PHP Tutorial . Backend Development 215 2025-07-15 01:22:21
  • Mastering PHP Comments
    Mastering PHP Comments
    PHP comments should be clear and logical to improve code readability and maintenance efficiency. 1. Single-line comments are preferred for //, and briefly explain the variables or code intentions to avoid relying solely on single-line comments in complex logic; 2. Multi-line comments are used for structured content such as function descriptions and parameter explanations, which are convenient for the generation of documents with document tools, and the format must be maintained uniformly; 3. Comments should be placed in a suitable position, such as above the function and near the variable definitions, to avoid inserting irrelevant explanations, unupdated old comments and repeated descriptions of obvious content; 4. Situations that should not be commented include clear variable names, standard function calls and temporary debugging code, which will interfere with reading. Only by using comments reasonably can we truly play their role.
    PHP Tutorial . Backend Development 293 2025-07-15 01:19:01
  • how to declare a php array
    how to declare a php array
    There are two main ways to declare arrays in PHP, and it is recommended to use the short array syntax []. 1. Use the array() function to apply to all PHP versions, for example: $fruits=array("apple","banana","orange"); you can also specify the key name: $person=array("name"=>"Alice","age"=>25); 2. Use the short array syntax[] to be more concise, and it has been supported since PHP5.4, for example: $colors=[
    PHP Tutorial . Backend Development 552 2025-07-15 01:18:01
  • What is the Difference Between `include` and `require` in PHP?
    What is the Difference Between `include` and `require` in PHP?
    In PHP, the main difference between include and require is the way in which files are handled. When using include, if the file does not exist, a warning will be generated (E_WARNING), but the script will continue to be executed; when using require, if the file does not exist, a fatal error will be caused (E_COMPILE_ERROR), and the script will be stopped immediately. Therefore, 1. For non-critical files such as templates or optional components, include should be used; 2. For critical files such as configuration files or core libraries, require must be used to avoid subsequent errors. In addition, to prevent repeated introduction, include_once and require_once can also be used. A common mistake is to
    PHP Tutorial . Backend Development 264 2025-07-15 00:17:01
  • What is the significance of the `final` keyword in php classes and methods?
    What is the significance of the `final` keyword in php classes and methods?
    In PHP, the final keyword is used to restrict inheritance and method rewriting. 1. Classes declared as final cannot be inherited to ensure that their logic is not modified; 2. Final methods cannot be rewritten by subclasses to maintain the consistency of core behavior; 3. Applicable to scenarios such as protecting the core components of the framework, implementing design patterns that do not allow extensions, and improving code readability, but excessive use should be avoided to retain the necessary flexibility.
    PHP Tutorial . Backend Development 864 2025-07-15 00:14:11
  • Explain Cross-Site Scripting (XSS) and its mitigation in php.
    Explain Cross-Site Scripting (XSS) and its mitigation in php.
    XSS is a security vulnerability that causes malicious script injection and execution due to incorrect filtering or escape of user input. It is common in dynamic web development languages such as PHP. Prevention methods include: 1. Avoid direct output of user input, and htmlspecialchars() should be escaped; 2. Different encoding methods such as json_encode() or rawurlencode() are adopted according to the output context; 3. Use modern frameworks such as Laravel's own escape mechanism; 4. Use HTMLPurifier and other purification libraries for rich text input to filter dangerous content. The core is to always be vigilant about user input and handle it when outputting.
    PHP Tutorial . Backend Development 420 2025-07-14 03:05:30
  • php calculate time difference in hours
    php calculate time difference in hours
    In PHP, the most recommended way to calculate the hour difference between two times is to use the DateTime and DateInterval classes. First create two DateTime objects, then call the diff() method to obtain the DateInterval object, then convert the days into hours and add the hour part; 1. Use DateTime and DateInterval: the code is clear and easy to maintain, suitable for scenarios that require high readability and precise control; 2. Use timestamps to directly calculate the difference: obtain the timestamp through strtotime(), which is suitable for situations where the date format is not high, but you need to pay attention to using abs() to avoid negative values, and choose round(
    PHP Tutorial . Backend Development 238 2025-07-14 03:04:50

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