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在PHP中运行while循环后没有输出的原因可能有以下几种: 1. 循环条件不满足:首先要检查while循环的条件是否满足,如果条件一开始就不满足,那么循环体内的代码将不会执行,导致没有输出。 2...
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In Python, awhileloop can have an optionalelseclause - that is executed once the loop condition isFalse. For example, counter = 0 while counter < 2: print('This is inside loop') counter = counter + 1 else: print('This is inside else block') Output This is inside loop This is insid...
While-loop语法解释 While-loop是一种常见的编程语言结构,用于重复执行一段代码,直到指定的条件不再满足为止。它的语法通常由一个循环条件和一个代码块组成。 循环条件是一个布尔表达式,用于判断是否继续执行循环。如果循环条件为真(true),则代码块会被执行;如果循环条件为假(false),则循环结束,程序会继续执行循环...
while 循环是 php 中最简单的循环类型。它和 C 语言中的 while 表现得一样。语法如下: while(expr){statement} 使用示例 Javascript 下面的例子定义了一个循环程序,这个循环程序的参数 i 的起始值为 0。该程序会反复运行,直到 i 大于 10 为止。i 的步进值为 1。
while loop do...while loop In the previous tutorial, we learned about for loop. In this tutorial, we will learn about while and do..while loop. while loop The syntax of the while loop is: while (testExpression) { // the body of the loop } How while loop works? The while loop ev...
运行结果:Value0: oneValue1: twoValue2: three提示在使用循环语句的时候,我们通常要注意不要无限循环而造成程序“僵死”,另外还要注意循环条件(循环判断表达式),以确保循环结果正确。原文链接:http://www.4u4v.net/php-for-in-the-loop-while-foreach-example-usage.html 0...
Forum List » PHP Advanced Search New Topic while loop?Posted by: Joseph McClellan Date: September 30, 2010 05:41PM I have a table which is used for inventory. columns are date brought in,manufacturer,type,grade. date sent out and 1 or a 2 value for sold 1 being sold 2 being...
The basic loop structure in Python is while loop. Here is the syntax.Syntax:while (expression) : statement_1 statement_2 ...The while loop runs as long as the expression (condition) evaluates to True and execute the program block. The condition is checked every time at the beginning of...