PHP array encoding conversion method reference
|
This article introduces some methods of encoding and converting arrays in PHP. Friends in need can refer to it.
In PHP programming, operations on arrays sometimes encounter problems related to encoding conversion. Due to the display effect of some special characters, UTF-8 was changed to GBK. Due to the use of Ajax technology, an old problem was involved - encoding conversion. Some form verification needs to return json data. PHP's json_encode function only supports utf-8 encoding, so I have no choice but to iconv. The desired effect is to convert the GBK array into a utf-8 array and pass it to the json_encode function. This is how it was initially done. After serializing the array, use the iconv function to convert the encoding, and then deserialize it again:
unserialize(iconv('gbk','utf-8',serialize($array))); Copy after login The result was blank. Later I remembered that the default encoding was set in the configuration file ini_set('default_charset', 'gbk'); It is definitely not easy to use gbk to deserialize utf-8 strings. It should be possible to add ini_set('default_charset', 'utf-8'); between serialization and deserialization. However, since it is a global encoding setting, it can easily lead to encoding problems in other places, such as database operations. Using the serialization method of constructing the array prototype and using the var_export function, the final function is as follows:
<?php
function array_iconv($in_charset,$out_charset,$arr){
return eval('return '.iconv($in_charset,$out_charset,var_export($arr,true).';'));
} ?> Copy after login Principle analysis: var_export sets the second parameter to true, returns the array prototype string, converts the string to utf-8 encoding, and then uses eval to perform the return (similar to an anonymous function?), which perfectly solves the problem. Summary: Most of the methods on the Internet use recursive calls to iconv. If the array has too many elements or more dimensions, the performance will be poor. Therefore, I personally feel that the best way is to use native code. There is no need to consider whether it is an N-dimensional array or an associative array. Everything is done automatically to ensure that the data is consistent before and after the array conversion. This is the introduction to the issue of encoding conversion in PHP arrays. I hope it will be helpful to everyone. |
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
Alipay PHP SDK transfer error: How to solve the problem of 'Cannot declare class SignData'?
Apr 01, 2025 am 07:21 AM
Alipay PHP...
Explain JSON Web Tokens (JWT) and their use case in PHP APIs.
Apr 05, 2025 am 12:04 AM
JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,
How does session hijacking work and how can you mitigate it in PHP?
Apr 06, 2025 am 12:02 AM
Session hijacking can be achieved through the following steps: 1. Obtain the session ID, 2. Use the session ID, 3. Keep the session active. The methods to prevent session hijacking in PHP include: 1. Use the session_regenerate_id() function to regenerate the session ID, 2. Store session data through the database, 3. Ensure that all session data is transmitted through HTTPS.
Describe the SOLID principles and how they apply to PHP development.
Apr 03, 2025 am 12:04 AM
The application of SOLID principle in PHP development includes: 1. Single responsibility principle (SRP): Each class is responsible for only one function. 2. Open and close principle (OCP): Changes are achieved through extension rather than modification. 3. Lisch's Substitution Principle (LSP): Subclasses can replace base classes without affecting program accuracy. 4. Interface isolation principle (ISP): Use fine-grained interfaces to avoid dependencies and unused methods. 5. Dependency inversion principle (DIP): High and low-level modules rely on abstraction and are implemented through dependency injection.
How to debug CLI mode in PHPStorm?
Apr 01, 2025 pm 02:57 PM
How to debug CLI mode in PHPStorm? When developing with PHPStorm, sometimes we need to debug PHP in command line interface (CLI) mode...
Framework Security Features: Protecting against vulnerabilities.
Mar 28, 2025 pm 05:11 PM
Article discusses essential security features in frameworks to protect against vulnerabilities, including input validation, authentication, and regular updates.
How to automatically set permissions of unixsocket after system restart?
Mar 31, 2025 pm 11:54 PM
How to automatically set the permissions of unixsocket after the system restarts. Every time the system restarts, we need to execute the following command to modify the permissions of unixsocket: sudo...
Explain late static binding in PHP (static::).
Apr 03, 2025 am 12:04 AM
Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.
