Home Backend Development PHP Tutorial 10 recommended articles about if conditional statements

10 recommended articles about if conditional statements

Jun 10, 2017 pm 02:43 PM

I explained to you a multiple-selection elseif statement earlier. Although this statement can make multiple judgments, when used, it requires writing a lot of if statements, which brings inconvenience to the readability of our program. In order to avoid If there are too many if statements and to improve the readability of our program, we can use switch multiple judgment statements. In this chapter we will introduce the "switch statement" to you. Syntax of switch statement: switch (expr) { case expr1: statement;                  break; case expr2: &nbs

1. Detailed explanation of "switch" statement examples of PHP control statements

10 recommended articles about if conditional statements

Introduction: I have explained to you a multiple-selection elseif statement before. Although this statement can make multiple judgments, when used, it requires writing a lot of if statements, which makes our program more readable. Inconveniently, in order to avoid too many if statements and improve the readability of our program, we can use switch multiple judgment statements. In this chapter, we will introduce the "switch statement" to you.

2. Detailed explanation of the "elseif statement" example of PHP conditional control statement

10 recommended articles about if conditional statements

Introduction: We have learned the "if...else statement" before and know that our "if...else statement" can only choose two results, either true or false. But what should we do when multiple conditions appear? What does it mean to have multiple items? To give an example, if there is a class exam, and after the exam results come out, the teacher will classify: those with a score of 90 or above are excellent; those with a score between 60-90 are good, and those with less than 60 are considered It's a failing grade. Under these multiple conditions, we need to use our "elseif statement".

3. Detailed explanation of the "if statement" example of PHP conditional control statement

10 recommended articles about if conditional statements

##Introduction: In all programming languages, such as C language. JAVA, etc., all have if statements, including PHP of course. The function of the if statement is to select and execute different code fragments according to conditions.

4. Getting started with Python if statement

10 recommended articles about if conditional statements

# #Introduction: When programming, you often need to check a series of conditions and decide what measures to take accordingly. In Python, if statements allow us to check the current state of the program and take appropriate action accordingly. 5.1 A simple example Below is a short example that demonstrates how to use if statements to correctly handle special situations. Suppose we have a list of cars and want to print out the name of each car in it. For most cars, the name should be printed with the first letter in capital letters, except for a car named "BMW", which should be printed in all caps. The following code iterates through a list and prints the car names in it with the first letter in uppercase, except for the car name "bmw", in all uppercase

5.

Summary Several ways of writing if during python learning

10 recommended articles about if conditional statements##Introduction: Small problems encountered in python example learning , I changed the question and needed to display the results of each file. This can be done with lists and if statements. The end of the article is the original question and answer

6.

in sql Detailed explanation of iif statement

10 recommended articles about if conditional statementsIntroduction: IIf returns one of two numerical or string values ​​determined by logical testing one. Syntax Number

7. How to use if statements in Linux shell script programming (conditional judgment)

10 recommended articles about if conditional statements

Introduction: This article mainly introduces the use of if statements in Linux shell script programming. Please refer to it

8. Several types of if statements in js Optimize code writing

10 recommended articles about if conditional statements

Introduction: UglifyJS is a tool for compressing and beautifying javascript. In its In the documentation, I saw several methods for optimizing if statements.

9. Nginx if statement plus regular expression to implement string truncation

10 recommended articles about if conditional statements

Introduction: This article mainly introduces the Nginx if statement plus regular expression to realize the string truncation function. This function may be needed in special occasions. It is one of NGINX's weird tricks. Friends who need it can Refer to the following

10. PHP introductory tutorial Detailed explanation of operators and control structure processes

10 recommended articles about if conditional statements

Introduction: This article mainly introduces the operator and control structure process of the PHP introductory tutorial, and analyzes in detail the basic assignment, auto-increment, comparison, ternary operator and Friends who need tips on using flow control statements such as if statements, switch statements, for statements, etc. can refer to

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How to write if in c language to judge multiple conditions How to write if in c language to judge multiple conditions Mar 25, 2024 pm 03:24 PM

In C language, if statement is usually used to execute a specific block of code based on a single condition. However, multiple conditions can be combined to make a determination using logical operators such as &&, ||, and !. Including using logical AND (&&) to judge multiple conditions, using logical OR (||) to judge at least one condition, using logical NOT (!) to judge the negation of a single condition, as well as nesting if statements and using parentheses to clarify priority.

How to use if nested statements in MySQL stored procedures How to use if nested statements in MySQL stored procedures May 26, 2023 pm 12:07 PM

1. Introduction to if statement The if statement is a branching structure statement that performs different operations according to conditions. The if statement usually consists of a conditional expression and one or more statements. If the value of the conditional expression is true, then the statements in the if statement are executed; otherwise, the if statement block is skipped. The syntax of the if statement is as follows: if(condition)thenstatement;elsestatement;endif; where condition is the conditional expression and statement is the SQL statement that needs to be executed. 2. Introduction to if nested statements An if nested statement refers to nesting one or more if statement blocks within an if statement block to perform different operations based on different conditions.

How to use if statement in Python? How to use if statement in Python? Apr 20, 2023 pm 11:40 PM

How to use the if statement in Python The if statement is used to express a possible situation and how to handle the situation. The if statement can be used to express one possibility, two possibilities, or multiple possibilities. 1 A possibility A single if statement represents a possibility. The if keyword is followed by an expression. When the expression is True, it means that this situation has occurred, and the specified statement is executed, that is, the situation is handled, as shown in the figure 1 shown. Figure 1 The use of a single if statement. Figure 1① Use the input() function to receive the value input by the user, convert it into int type and save it in a variable; Figure 1② Use the if statement to judge the variable x. If the value of x is greater than 0, the message "You entered a non-negative number" is output (

C program to print 'even' or 'odd' without using conditional statements C program to print 'even' or 'odd' without using conditional statements Sep 15, 2023 pm 09:21 PM

In this section, we will see how to check whether a number is odd or even without using any conditional statements like <, <=, !=, >, >=, ==. We can easily check if the number is odd or even by using conditional statement. We can divide the number by 2 and check if the remainder is 0. If 0, it is an even number. Otherwise, we can AND the number with 1. If the answer is 0, it is an even number, otherwise it is an odd number. Conditional statements cannot be used here. We'll see two different ways to check whether an odd or even number is present. Method 1 Here we will create an array of strings. The index 0 position will hold "even" and the index 1 position will hold "odd". We can divide numbers

5 essential Python entry example codes 5 essential Python entry example codes Jan 13, 2024 am 08:39 AM

Getting Started with Python Code: 5 Essential Examples for Learning Python is a simple and easy-to-learn high-level programming language that is widely used in data analysis, machine learning, web crawlers and other fields. For beginners, it is important to master some basic Python code. This article will introduce 5 simple example codes to help beginners quickly get started with Python programming. Print Hello,World!print("Hello,World!") This is Python

Program to print numbers from 1 to 100 without using loops Program to print numbers from 1 to 100 without using loops Sep 07, 2023 pm 05:49 PM

Here we will see how to write a C program that can print numbers from 1 to 100 without using any kind of loop. This problem can be solved using recursion. We will create a function that will be called recursively. We know that recursive functions basically have two parts. Operations such as base cases and recursive calls. In this function, the base case is that parameter n is greater than 1. The function will be called recursively until 1 is reached. Now finally it will print the value of n. This way the entire system generates numbers. Sample code #include<stdio.h>voidgenerate_numbers(intn){if(n>1){generate_nu

Conditional statement usage and examples in C++ Conditional statement usage and examples in C++ Aug 22, 2023 am 08:25 AM

As a high-level programming language, C++ has a variety of flow control statements to implement the decision-making structure and loop structure of the program. Among them, the conditional statement is one of the most commonly used statements in C++ programming. It determines the execution path of the program by judging whether the condition is met. This article will introduce the usage and examples of conditional statements in C++ in detail to help readers better understand and apply this syntax. 1. Basic syntax of conditional statements Conditional statements in C++ mainly include three types: if statement, ifelse statement and switch statement. their basic language

what does if mean what does if mean Aug 22, 2023 am 10:31 AM

if means if, in programming, the if statement is usually used to decide whether to execute certain code based on the true or false condition. In an if statement, you can include one or more conditional expressions, which can use comparison operators (such as equal to, not equal to, greater than, less than, etc.) to determine whether a specific condition is true or false. If the result of the conditional expression is true, the code in the if statement block is executed; otherwise, the code block is skipped and subsequent code execution continues.

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