current location：Home > Technical Articles > Backend Development > PHP Problem
- Direction：
- All web3.0 Backend Development Web Front-end Database Operation and Maintenance Development Tools PHP Framework Daily Programming WeChat Applet Common Problem Other Tech CMS Tutorial Java System Tutorial Computer Tutorials Hardware Tutorial Mobile Tutorial Software Tutorial Mobile Game Tutorial
- Classify：
-
- PHP data conversion xml format file
- PHP is a widely used server-side scripting language and one of the most popular. PHP is highly portable and scalable and can be used to write a variety of web applications and services. In web development, converting data into XML format files is a common requirement. So, how to use PHP to convert data into XML format files? This article will introduce you to some ways to achieve this. ## What is XML? XML was originally Extensible Markup Language (Extensible Markup Language)
- PHP Problem 671 2023-05-28 16:39:08
-
- php output sql error
- Debugging and handling SQL errors is an important task when writing PHP programs. SQL errors may occur during query, insert, update, or delete operations, and if these errors are not handled promptly, they may cause application exceptions or crashes. This article will describe how to output SQL errors in PHP for timely processing. 1. Error reporting is set in PHP. By default, SQL error information will not be output. You need to manually enable error reporting. We can set it by modifying the php.ini file
- PHP Problem 679 2023-05-28 16:38:07
-
- php implements printing document function
- In many websites, we often see the function of printing documents. Users can print out the page content by clicking the print button. The traditional implementation method is to operate through the browser's own printing function, but this method has many disadvantages, such as inconsistent styles, abnormal image display, etc. In order to solve these problems, PHP can be used to implement the printing document function. Implementation Idea The basic idea of using PHP to realize the printing document function is to convert the content that needs to be printed into a PDF document through a server-side script, and then download it through the browser or print it directly.
- PHP Problem 2429 2023-05-28 16:24:40
-
- Articles cannot be added in the php background
- Can't add articles in PHP backend? This can be due to a number of factors, but there are some simple fixes we can take to resolve this issue. In this article, we will explore these solutions to help you fix the issue of not being able to add articles. 1. Check PHP version First, you need to make sure your server is running the latest version of PHP. If you are using an older version of PHP, there are chances that some errors may occur. The latest version of PHP contains many improvements and security fixes, so we recommend that you upgrade to the latest version. 2. Check
- PHP Problem 579 2023-05-28 16:11:37
-
- php reads text garbled
- During the PHP development process, you may encounter garbled characters when reading text files, which is extremely detrimental to the normal operation of the program. This article will introduce some possible causes of garbled characters and provide some solutions. 1. Text file encoding format error Text files support multiple encoding formats, including UTF-8, GBK, GB2312, etc. If the encoding format of PHP does not match the encoding format used in the file when reading a text file, garbled characters will result. In PHP, you can use mb_detect_en
- PHP Problem 800 2023-05-28 16:06:40
-
- The php file in the server cannot be run
- With the continuous development and popularization of Internet technology, Web development has become an indispensable part of people's work and life. As a server-side scripting language, PHP is widely used in the field of web development and is used by many websites. However, in actual development, sometimes we encounter situations where the PHP file in the server cannot run normally. At this time, we need to carefully troubleshoot the problem and solve it. 1. Modify the PHP.ini file. When solving the problem that the PHP file cannot run on the server, you first need to check whether the PHP configuration file is normal.
- PHP Problem 897 2023-05-28 15:39:40
-
- PHP specifies deleting a row of the table
- In PHP, if you want to delete a row of a specified table in the MySQL database, you can use the following steps: Step 1: Connect to the MySQL database. First, before deleting a row of the table, you need to use PHP to establish a connection with the MySQL database. Before connecting, you need to know the database hostname, database username, database password, and database name. Use the following code to connect to the MySQL database: ```$conn = mysqli_connect("localhost", "userna
- PHP Problem 848 2023-05-28 15:36:09
-
- php query multidimensional array
- PHP is a powerful programming language that is often used to develop web applications. When developing web applications through PHP, we often need to deal with multi-dimensional arrays. A multidimensional array is an array that contains another array. These arrays can be nested multiple levels into a complex structure. How to query such multi-dimensional arrays has become a problem faced by developers. PHP provides some built-in functions to handle multi-dimensional arrays, including array_search(), array_key_exists(), in_arra
- PHP Problem 1098 2023-05-28 15:31:41
-
- java md5 hexadecimal to php
- Encryption is a very important part of network data transmission. MD5 is a widely used encryption algorithm that converts data of any length into a 128-bit hash value. In Java, we can easily use the MD5 algorithm to encrypt data and convert it into a string in hexadecimal form, but if we need to use such an encrypted string in PHP, how to convert it? First, we need to understand the differences in string encoding between Java and PHP. In Java, strings are encoded in UTF-16 by default, while in P
- PHP Problem 727 2023-05-28 15:28:40
-
- php modify sql
- PHP (Hypertext Preprocessor) is a widely used open source scripting language for the development of web applications. In PHP development, the database is a very important component, and modifying SQL data is a very common operation. This article will introduce how to modify SQL in PHP. What is SQL? SQL (Structured Query Language) is a standard language for managing relational databases (RDBMS). SQL for insert, update, delete and
- PHP Problem 584 2023-05-28 15:09:38
-
- How to achieve batch deletion in php
- With the development of the Internet and technology, more and more websites and applications are beginning to use PHP as the back-end development language. In web development, it is often necessary to manage and maintain data in the database. One of the common operations is batch deletion. In this article, we will introduce how to implement batch deletion using PHP. 1. Understand the concept of batch deletion. In database management, batch deletion refers to deleting multiple pieces of data at the same time. This kind of operation is very common in website development. For example, the administrator needs to delete multiple user comments, or delete all products under a certain category in batches.
- PHP Problem 909 2023-05-28 15:09:08
-
- php mysql modify fields
- PHP is a powerful web development language, while MySQL is one of the most popular open source databases. MySQL provides many features that allow programmers to easily operate the database. One of these functions is to modify fields in the database. In this article, we will explore how to modify fields using PHP and MySQL. Before you begin, make sure you have MySQL server installed and running on your local computer. Additionally, you will need PHP installed and an appropriate text editor such as Sublime Text or V
- PHP Problem 699 2023-05-28 15:01:10
-
- Convert seconds to days in php
- In some PHP applications that require time calculation, we will encounter the problem of converting seconds into days. For example, in an online learning platform, we hope to be able to calculate how many days it takes to complete a learning plan. This requires converting the given number of seconds into days to facilitate user understanding. The following will introduce how to convert seconds into days in PHP. The first method: Use the date() function. Use the date() function in PHP to convert the timestamp into a specified date format. We can directly convert seconds into days by setting the format.
- PHP Problem 1164 2023-05-28 13:42:09
-
- How to find the difference between adjacent elements in an array in PHP
- How to implement the difference between adjacent elements of an array in PHP: 1. Create a PHP sample file; 2. Define two arrays, namely "$array1" and "$array2", and the array that stores the difference is "$diff"; 3. You can use the "array_diff" function to find the difference between adjacent elements of an array. Its syntax is "array array_diff (array $array1, array $array2 [, array $...])".
- PHP Problem 1239 2023-05-26 16:42:52
-
- How to convert json to php array object array
- How to convert json to php array object array: 1. Create a PHP sample file; 2. Convert JSON to PHP array object "$data" through the "json_decode()" function, the syntax is "mixed json_decode(string $json, bool $assoc = false,...)"; 3. Use the "var_dump()" function to output the value of "$data".
- PHP Problem 985 2023-05-26 15:10:12
Recommended Articles
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.
Player special effects
2024-02-29
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
