Summary of PHP array learning series (continuously updated~)
I have written a lot of articles about PHP array learning during this period, and I believe they will be more or less helpful to everyone. So today this article will give you a big summary of all the previous array learning series articles to facilitate your learning. You are welcome to collect and share learning~
PHP array learning series articles The summary is as follows:
One: "PHP array learning how to create and initialize a one-dimensional array (detailed code explanation)"
Two: "PHP array learning: A brief analysis of two-dimensional array creation methods》
3:《PHP array learning: Let’s talk about several methods of outputting arrays》
4: " Tips for learning PHP arrays: Use array functions to sort arrays in ascending order! 》
Five:《PHP Array Learning Two-Dimensional Array Calculating Array Length》
Six:《PHP Array Learning to get the first/last element (1)》
7:《PHP array learning to get the first/last element (2) 》
Eight:《PHP Array Learning: Calculating the Sum of Array Elements》
9:《PHP Array Learning: Calculating the Product of Array Elements》
十:《PHP array learning: How to traverse array elements? Brief analysis of 4 methods》
Eleven:《PHP array learning: How to check whether there is a specified key name/value》
Twelve:《PHP Array Learning Tips Use array functions to sort arrays in descending order! 》
Thirteen:《Random sorting of PHP array learning, disrupting array elements》
Fourteen:《How to learn PHP array Compare two arrays to find the intersection》
Fifteen:《PHP array learning how to compare two arrays to find the difference》
Sixteen:《PHP Array Learning: How to Create Arrays by Filling》
Seventeen:《PHP Array Learning: How to Use Functions to Insert Elements (1)》
Eighteen: "PHP Array Learning: How to Use Functions to Insert Elements (2)"
Nineteen: "PHP Array Learning: Randomly Obtain Multiple Elements 》
Twenty:《PHP array learning: find the value with the highest repetition rate》
Twenty-one:《PHP array learning: reverse the order, Print all elements in reverse》
Twenty-two:《PHP array learning how to create arrays by merging》
Twenty-three:《PHP array learning how to remove the first and last values》
Twenty-four:《PHP array learning how to remove any element》
Twenty-five: "PHP array learning: Change the uppercase or lowercase of keys/values"
Twenty-six: "PHP array learning: Return all common factors and the maximum between two given numbers Common Factor》
Twenty-seven:《PHP array learning uses bubble algorithm to sort elements in ascending order! 》
Twenty-eight:《PHP array learning: Compare array elements and obtain the first and second largest values》
Twenty-nine:《PHP array learning skillfully uses functions to extract the maximum value and the second largest value》
Thirty:《PHP array learning how to intercept element fragments (two methods) 》
Thirty-one: " How to sort two-dimensional arrays in PHP array learning (2 methods) "
Thirty-two: " How to sort two-dimensional arrays in PHP array learning Exchange the positions of key names and values》
Thirty-four: "PHP array learning how to remove blank or repeated elements"
Thirty-five: "PHP Array learning: extracting digital elements and splicing them into a new array》
36:《PHP array learning: how to reset the index of a multi-dimensional array》
37: "PHP array learning: changing the key of one-dimensional and two-dimensional arrays"
38: "PHP array learning: extracting the first element of an associative array The key name key》
Thirty-nine:《PHP array learning returns the last key name of the associative array》
Forty:《 PHP array learning: splicing elements into a string and outputting (3 methods)》
The array learning series articles I have written so far are all here. I will update when there are new articles!
By the way, let me introduce PHP arrays to you:
Arrays are one of the means to effectively organize and manage large amounts of data. Through the powerful function of arrays, a large amount of data of the same nature can be stored. , sorting, insertion and deletion operations, which can effectively improve program development efficiency and improve the way programs are written.
PHP is one of the most popular Web development languages on the market. With its open source code and fast upgrade speed, it has more powerful ability to operate arrays. In particular, PHP provides a lot of convenience for program developers. , the easy-to-understand array operation functions make PHP popular among the majority of Web developers.
Recommended related articles:
《PHP ARRAY Array Function (Special Topic)》
《 PHP date and time application summary (continuously updated ~) 》
《PHP algorithm exercise series summary (continuously updated~)》
《 Summary of PHP cycle learning series (continuously updated~)》
The above is the detailed content of Summary of PHP array learning series (continuously updated~). For more information, please follow other related articles on the PHP Chinese website!

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











PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.
