PHP Operator (1) 'Arithmetic Operator' Example Explanation
What are php arithmetic operators?
IntroductionArithmetic operatorsBefore, let’s take a look at what operators are. Operators are used to perform program code operations and are commonly used to operate on variables, constants or data. The notation for a calculation, which is a specified operation performed on a value or set of values. PHP operators: arithmetic operators, string operators, assignment operators, bitwise operators, logical operators, comparison operators, increment or decrement operators, error control operators. We will explain them to you separately later. Let's first explain the arithmetic operators in PHP operators.
Introduction to various symbols of arithmetic operators:
Arithmetic operators are symbols that handle arithmetic operations. The most commonly used arithmetic operators are used in number processing. The commonly used arithmetic operators are as follows:
| ## With with with with with with | ||
| $a+$b | Subtraction operation | |
| * | Multiplication operation | |
| / | Division operation | |
| % | Remainder operation | $a%$b |
| #Increment operation | $a++,++$a | |
|
PS: Use % in the arithmetic operator to find the remainder. If the dividend ($a) is a negative number, the result obtained is also a negative value. What I want to talk about here are the last two increment/decrement operators, which mainly operate on a single variable. There are two ways to use the increment/decrement operator: The first one: first increase or decrease the variable by 1, and then assign the value to the original variable. , called the prefixed increment/decrement operator. The second type is to put the operator after the variable, first return the current value of the variable, and then increase or decrease the current value of the variable by one. We call it the postincrement/decrement operator Arithmetic operator usage examples The following examples use several operators in the above table to perform calculations. The code is as follows: <?php $a = 8; $b = 2; $c = 3; echo $a+$b."<br>\n"; echo $a-$b."<br>\n"; echo $a*$b."<br>\n"; echo $a/$b."<br>\n"; echo $a%$c."<br>\n"; $a++; echo $a."<br>\n"; ++$a; echo $a."<br>\n"; $c--; echo $c; ?> Copy after login The running result is as shown below
The above example is our simple application of arithmetic operators. For more information, please refer to the php operator topic . In the next section, we will introduce the concept and usage of string operators in detail. Recommended related video tutorials: "php.cn Dugu Jiujian (4)-php video tutorial": Operator (1) :Arithmetic operators, string operators, assignment operators |
The above is the detailed content of PHP Operator (1) 'Arithmetic Operator' Example Explanation. 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
1666
14
1425
52
1325
25
1272
29
1252
24
PHP and Python: Comparing Two Popular Programming Languages
Apr 14, 2025 am 12:13 AM
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: A Key Language for Web Development
Apr 13, 2025 am 12:08 AM
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 in Action: Real-World Examples and Applications
Apr 14, 2025 am 12:19 AM
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 vs. Python: Understanding the Differences
Apr 11, 2025 am 12:15 AM
PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.
The Enduring Relevance of PHP: Is It Still Alive?
Apr 14, 2025 am 12:12 AM
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 and Python: Code Examples and Comparison
Apr 15, 2025 am 12:07 AM
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 vs. Other Languages: A Comparison
Apr 13, 2025 am 12:19 AM
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: Different Paradigms Explained
Apr 18, 2025 am 12:26 AM
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.
