Course Introduction：In PHP, array paging can be implemented through the paginateArray function. This function accepts an array, the number of items per page, and the current page number, and returns the data of the corresponding page. Example of usage: $myArray=range(1,100);$perPage=10;$currentPage=3;$pagedData=paginateArray($myArray,$perPage,$currentPage); Output the data on page 3, that is, 21 to 30.
2025-05-23 comment 0 907
Course Introduction：In PHP, iterating through session data can be achieved through the following steps: 1. Start the session using session_start(). 2. Iterate through foreach loop through all key-value pairs in the $_SESSION array. 3. When processing complex data structures, use is_array() or is_object() functions and use print_r() to output detailed information. 4. When optimizing traversal, paging can be used to avoid processing large amounts of data at one time. This will help you manage and use PHP session data more efficiently in your actual project.
2025-04-26 comment 0 986
Course Introduction：Getting the number of rows affected by precompiled statements can be implemented in different ways: 1. When using PDO in PHP, call rowCount() or fetchAll and count(); 2. When using mysqli, call store_result() and access num_rows; 3. Node.js or Python count the length after obtaining the result array; 4. Note that some databases do not support direct acquisition, and need to be manually calculated or paging, LIMIT1 and other methods to optimize performance. The core idea is to execute the statement first and then extract the row count information from the result set.
2025-07-17 comment 0 169
Course Introduction：In PHP, $_GET, $_POST, and $_REQUEST are used to collect data from HTTP requests, but for different purposes. 1.$_GET is used to retrieve non-sensitive data through URL query strings, suitable for scenarios such as filtering content, paging links, etc.; 2.$_POST is used to process sensitive or large amounts of data submitted through HTML forms, such as login information and file uploads; 3.$_REQUEST is a collection of $_GET, $_POST and $_COOKIE, providing a unified access method, but may cause conflicts. It is recommended to use $_GET or $_POST first to avoid ambiguity and security risks.
2025-06-11 comment 0 602
Course Introduction：Laravel's EloquentORM simplifies database queries through PHP objects. Basic search includes using ::all() to obtain all records, using ::find() or ::findOrFail() to obtain a single record through the primary key, and adding conditions to the where() method to retrieve specific data; you can chain calls where(), whereIn(), whereNull() and other methods to filter the result set; support relationship processing between models, such as defining one-to-many relationships through hasMany and using with() to achieve preloading to avoid N 1 query problems; paging can be implemented through paginate(), and performance optimization suggestions include selecting necessary fields, using cache reasonably and searching
2025-06-17 comment 0 465
Course Advanced 31435
Course Introduction：Are you still worried about the realization of the paging function? This course will analyze the principles from simple to complex, and work with everyone to complete a fully functional paging.
Course Advanced 14496
Course Introduction：Are you still worried about the realization of the paging function? This course will analyze the principles from simple to complex, and work with everyone to complete a fully functional paging.
Course Elementary 13769
Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.
Course Elementary 82277
Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).
Course Elementary 13142
Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.
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