亚洲国产日韩欧美一区二区三区,精品亚洲国产成人av在线,国产99视频精品免视看7,99国产精品久久久久久久成人热,欧美日韩亚洲国产综合乱

current location：Home > Technical Articles > Daily Programming > PHP Knowledge

  • How to include a file in php
    How to include a file in php
    Useincludeforoptionalfiles,asitcontinuesexecutiononfailure.2.Userequireforessentialfiles,asmissingfilesstopexecution.3.Useinclude_onceandrequire_oncetopreventduplicateinclusions.4.PreferDIRforreliablefilepaths.Choosingtherightmethodensurespropercodeo
    PHP Tutorial . Backend Development 586 2025-08-27 08:44:01
  • How to check if a string contains a specific word in php
    How to check if a string contains a specific word in php
    Use strpos() for case-sensitive search, return position or false, and use !== comparison; 2. Use strpos() for case-insensitive search; 3. Use preg_match() combined with \b to achieve precise word matching to avoid partial matching problems.
    PHP Tutorial . Backend Development 607 2025-08-27 08:39:01
  • What is the difference between isset and empty in php
    What is the difference between isset and empty in php
    isset()checksifavariableexistsandisnotnull,returningtrueevenforzero,false,oremptystringvalues;2.empty()checksifavariableisnull,false,0,"0","",orundefined,returningtrueforthese"falsy"values;3.isset()returnsfalsefornon-exi
    PHP Tutorial . Backend Development 931 2025-08-27 08:38:00
  • How to configure SMTP for sending mail in php
    How to configure SMTP for sending mail in php
    Answer: Using the PHPMailer library to configure the SMTP server can enable sending mails through SMTP in PHP applications. PHPMailer needs to be installed, set up SMTP host, port, encryption method and authentication credentials of Gmail, write code to set sender, recipient, topic and content, enable 2FA and use application password to ensure that the server allows SMTP connection, and finally call the send method to send email.
    PHP Tutorial . Backend Development 305 2025-08-27 08:08:01
  • How to split a string with a delimiter in php
    How to split a string with a delimiter in php
    Use the exploit() function to split the string by the separator, such as exploit(",", $fruits) to convert the string into an array; the third parameter can limit the number of splits; if there are spaces or inconsistent separators, it can be processed in combination with trim or preg_split.
    PHP Tutorial . Backend Development 378 2025-08-27 08:02:01
  • How to work with image manipulation in php
    How to work with image manipulation in php
    GD and Imagick can be used for PHP image processing, GD is suitable for thumbnails and watermarks, and Imagick supports advanced effects. It requires enabling extensions and verification of input, freeing memory, and ensuring upload security.
    PHP Tutorial . Backend Development 470 2025-08-27 07:08:00
  • How to implement a 'remember me' feature in a login system in php
    How to implement a 'remember me' feature in a login system in php
    To implement the "Remember Me" function, you need to add encryption tokens and expiration time fields in the database. When the user logs in and checks, a security token is generated. The hash is stored in the database and stored cookies with security attributes such as HttpOnly; if the session is not logged in but there is a valid token, it will automatically log in and rotate the token; when logging out, the database tokens and cookies are cleared to ensure security.
    PHP Tutorial . Backend Development 725 2025-08-27 07:03:01
  • Best practices for dynamic SQL query and date range iteration in PHP
    Best practices for dynamic SQL query and date range iteration in PHP
    This article explores how to efficiently and securely execute SQL queries with dynamic date ranges in PHP. By avoiding the use of global variables and directly transferring function names, we recommend using structured data (arrays) to manage date intervals and iterative queries in combination with PDO preprocessing statements to achieve code clarity, maintainability and security.
    PHP Tutorial . Backend Development 173 2025-08-27 07:00:01
  • Tutorial for merging arrays in PHP to build financial statement data
    Tutorial for merging arrays in PHP to build financial statement data
    This article aims to provide a clear and actionable guide to help developers combine multiple numbers obtained from database queries in PHP into a structured array to facilitate the generation of financial statements. We will explain in detail how to traverse data, extract key information, and organize them into easy-to-access and use formats, especially for scenarios where revenue data is aggregated by company and month.
    PHP Tutorial . Backend Development 839 2025-08-27 05:27:01
  • How to use foreach loops in php
    How to use foreach loops in php
    ForeachloopsinPHPsimplifyarrayiterationbyautomaticallyhandlingindices,allowingcleanaccesstovaluesorkey-valuepairsinassociativearrays,modifyingelementsviareferences,andsupportingnestedloopsformultidimensionalarrays.
    PHP Tutorial . Backend Development 993 2025-08-27 03:42:01
  • How to check the size of a file in php
    How to check the size of a file in php
    Use the filesize() function to get the file size (bytes). You need to first use file_exists() to check whether the file exists; you can convert bytes into KB, MB, GB and other readable formats through custom functions; pay attention to the restrictions on large files and file read permissions in the 32-bit system.
    PHP Tutorial . Backend Development 646 2025-08-27 00:59:01
  • How to generate a PDF in php
    How to generate a PDF in php
    Use the FPDF library to easily generate PDFs. First install FPDF through Composer, then create a PHP file, instantiate the FPDF object, add pages, set fonts, insert text content, and finally call the Output() method to output or download the PDF file.
    PHP Tutorial . Backend Development 667 2025-08-27 00:08:01
  • PHP: Efficiently merge multidimensional arrays to build structured datasets
    PHP: Efficiently merge multidimensional arrays to build structured datasets
    This article will dive into how multiple independent arrays (e.g., page ID, location, and priority) can be merged into a structured single array in PHP, where each element is an associative array containing related attributes. We will focus on the various implementations of using the array_map function combined with compact or array_combine, and discuss its flexibility and applicable scenarios, aiming to help developers process array data in a professional and efficient way.
    PHP Tutorial . Backend Development 958 2025-08-26 18:03:01
  • Dynamically generate form fields based on user input
    Dynamically generate form fields based on user input
    This article describes how to use PHP to dynamically generate form fields based on user inputs in previous fields. With simple example code, it shows how to cycle through the corresponding number of text input boxes based on the number specified by the user and process the submitted data. Suitable for beginners to learn how to handle dynamic form generation in PHP.
    PHP Tutorial . Backend Development 304 2025-08-26 18:00:02

Tool Recommendations

jQuery enterprise message form contact code

jQuery enterprise message form contact code is a simple and practical enterprise message form and contact us introduction page code.
form button
2024-02-29

HTML5 MP3 music box playback effects

HTML5 MP3 music box playback special effect is an mp3 music player based on HTML5 css3 to create cute music box emoticons and click the switch button.

HTML5 cool particle animation navigation menu special effects

HTML5 cool particle animation navigation menu special effect is a special effect that changes color when the navigation menu is hovered by the mouse.
Menu navigation
2024-02-29

jQuery visual form drag and drop editing code

jQuery visual form drag and drop editing code is a visual form based on jQuery and bootstrap framework.
form button
2024-02-29

Organic fruit and vegetable supplier web template Bootstrap5

An organic fruit and vegetable supplier web template-Bootstrap5
Bootstrap template
2023-02-03

Bootstrap3 multifunctional data information background management responsive web page template-Novus

Bootstrap3 multifunctional data information background management responsive web page template-Novus
backend template
2023-02-02

Real estate resource service platform web page template Bootstrap5

Real estate resource service platform web page template Bootstrap5
Bootstrap template
2023-02-02

Simple resume information web template Bootstrap4

Simple resume information web template Bootstrap4
Bootstrap template
2023-02-02

Cute summer elements vector material (EPS PNG)

This is a cute summer element vector material, including the sun, sun hat, coconut tree, bikini, airplane, watermelon, ice cream, ice cream, cold drink, swimming ring, flip-flops, pineapple, conch, shell, starfish, crab, Lemons, sunscreen, sunglasses, etc., the materials are provided in EPS and PNG formats, including JPG previews.
PNG material
2024-05-09

Four red 2023 graduation badges vector material (AI EPS PNG)

This is a red 2023 graduation badge vector material, four in total, available in AI, EPS and PNG formats, including JPG preview.
PNG material
2024-02-29

Singing bird and cart filled with flowers design spring banner vector material (AI EPS)

This is a spring banner vector material designed with singing birds and a cart full of flowers. It is available in AI and EPS formats, including JPG preview.
banner picture
2024-02-29

Golden graduation cap vector material (EPS PNG)

This is a golden graduation cap vector material, available in EPS and PNG formats, including JPG preview.
PNG material
2024-02-27

Home Decor Cleaning and Repair Service Company Website Template

Home Decoration Cleaning and Maintenance Service Company Website Template is a website template download suitable for promotional websites that provide home decoration, cleaning, maintenance and other service organizations. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-05-09

Fresh color personal resume guide page template

Fresh color matching personal job application resume guide page template is a personal job search resume work display guide page web template download suitable for fresh color matching style. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-29

Designer Creative Job Resume Web Template

Designer Creative Job Resume Web Template is a downloadable web template for personal job resume display suitable for various designer positions. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28

Modern engineering construction company website template

The modern engineering and construction company website template is a downloadable website template suitable for promotion of the engineering and construction service industry. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28