Home Backend Development PHP Tutorial Recommended php array pointer effects

Recommended php array pointer effects

Jun 14, 2017 pm 03:18 PM

Operation of array pointer: Operation of moving array pointer: Next() downward and the value of the current element will be obtained at the same time. Prev() will get the value of the current element when going up. End() moves to the last element unit and gets the value of the last element. Reset() moves to the first unit and gets the value of the first element. If the move is unsuccessful, return false. The parameters are all arrays that need to be operated and are passed by reference. Get the information of the element pointed to by the pointer: Key();//Get the subscript of the element pointed to by the current array pointer Current();//Get the element pointed by the current array pointer. Only get the data without moving the pointer. There is also a mixed operation: that is You can get the information (key value) of the current pointer element and you can also move the pointer at the same time. Each(); obtains the information of the current element (key and value information), each. Moving the pointer: We can sometimes use the characteristics of each to achieve

1. php array pointer

Recommended php array pointer effects

Introduction: This article introduces php array pointers

2. php array pointer study notes (1)

Recommended php array pointer effects

Introduction:: PHP array pointer study notes (1): There is such a problem, an array queue, the array length is fixed , when inserting elements into the input, after exceeding the maximum length, the array automatically starts to overwrite and fill from the beginning. At this time, the entire array forms a ring. As shown below. // Define an array $test_array = array();function push_array($value, &$test_array) { if (count($test_array) < 12) { // When the number is

3. Detailed explanation of the usage of php array pointers

Introduction: ec(2); First give a conclusion, and then we will use code to prove this conclusion. $arrtmp=$arr; In this assignment expression, I call $arr the assignment array, and $arrtmp the assigned array. When the array is assigned, if the array pointer of the assigned array already points to the end of the array, the array pointer of the assigned array will be reset after the assignment and points to the first element of the array; if during the assignment, the array pointer of the assigned array does not point to the array. At the end, it points to any valid array element, then assign the array's

after the assignment. [Related Q&A recommendations]:

The above is the detailed content of Recommended php array pointer effects. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. 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? 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. 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? 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...

How to automatically set permissions of unixsocket after system restart? 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::). 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.

How to send a POST request containing JSON data using PHP's cURL library? How to send a POST request containing JSON data using PHP's cURL library? Apr 01, 2025 pm 03:12 PM

Sending JSON data using PHP's cURL library In PHP development, it is often necessary to interact with external APIs. One of the common ways is to use cURL library to send POST�...

See all articles