10 recommended articles about elseif statements

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: &

1. 10 recommended articles about switch

##Introduction: 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 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. The syntax of the switch statement: switch (expr){    case ...

2. 10 recommended articles about if conditional statements

Introduction: I explained to you a multiple selection elseif statement earlier, although this statement can be Multiple judgments, but when used, we need to write a lot of if statements, which brings inconvenience to the readability of our program. In order to avoid too many if statements and improve the readability of our program, we can use switch multiple judgment statements. This chapter We will introduce to you the "switch statement". The syntax of the switch statement: switch (expr){    case ...

3. PHP control statement "switch" statement example Detailed explanation

Introduction: I explained to you a multiple selection elseif statement earlier, although this statement can Make multiple judgments, but when using them, you need to write a lot of if statements, which brings inconvenience to the readability of our program. In order to avoid too many if statements and improve the readability of our program, you can use switch multiple judgment statements. In this chapter, we will introduce to you the "switch statement".

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

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".

5. Detailed sample code of how PHP inserts information from the page to the database

##Introduction: PHP page //Initialization act$_REQUEST['act']=$_REQUEST['act']?$_REQUEST['act']:'';if($_REQUEST[' act']=='add'){ include 'templates/zhiliang_add.php'; }elseif($_REQUEST['act']=='insert'){ //File upload

6.

PHP conditional statements and ternary operators

简介：<?php   $n1=1000;   $n2=1000;   $n3=100;   $n4=100;   // if 语句 - 如果指定条件为真，则执行代码   // if...else 语句 - 如果条件为 true，则执行代码；如果条件为 false，则执行另一端代码   // if...elseif....else 语句 - 选择若干段代码块之一来执行   // switch 语句  ...

7. 一个取得客户端IP的函数

简介：<?phpfunctiontep_get_ip_address(){if(isset($_SERVER)){if(isset($_SERVER['HTTP_X_FORWARDED_FOR'])){$ip=$_SERVER['HTTP_X_FORWARDED_FOR'];}elseif

8. PHP实现的基本数据结构

简介：//--------------------//基本数据结构//--------------------//二分查找（数组里查找某个元素）functionbin_sch($array,$low,$high,$k){if($low<=$high){$mid=intval(($low+$high)/2);if($array[$mid]==$k){return$mid;}elseif($k<$ ...

9. php--if/else/elseif/else if

简介：如同在表达式一章中定义的，expr 按照布尔求值。如果 expr 的值为 TRUE，PHP 将执行 statement，如果值为 FALSE ——将忽略 statement。有关哪些值被视为 FALSE 的更多信息参见转换为布尔值

10. PHP 条件判断语句和三元运算符

简介：<?php   $n1=1000;   $n2=1000;   $n3=100;   $n4=100;   // if 语句 - 如果指定条件为真，则执行代码   // if...else 语句 - 如果条件为 true，则执行代码；如果条件为 false，则执行另一端代码   // if...elseif....else 语句 - 选择若干段代码块之一来执行   // switch 语句  ...

【相关问答推荐】：

php - if ...elseif...else...这样写错了吗，为什么不执行呢？

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