PHP中使用循环实现的金字塔图形_php技巧
今天学习了最基础的PHP条件和循环语句,最后老师提了几个问题,其中一个实现空心金字塔的图像比较好玩。
老师要让我们实现的是:
*
* *
* * * 的空心金字塔。
第一种:
for ($i=1;$i
switch ($i){
case 1:
echo " "."*"." ";
break;
case 2:
echo " ";
break;
case 3:
echo " "."*"." "."*"." ";
break;
case 4:
echo " ";
break;
case 5:
echo "*"." "."*"." "."*";
break;
}
echo "
";
实现效果就是老师要求的图像,不过老师觉得应该还有更简单的实现方式,可以将空格和*号分开输出;
于是就有了第二种:
for($a=0;$a for($b=4;$b>$a;$b--){
echo " ";
}
for($c=1;$c echo "*";
}
for($d=0;$d echo "*";
}
echo "
";
}
这个实现的效果就没有刚才那种中间空心的了,效果如下:
*
***
*****
*******
这个还没有实现空心,待会再试试,今天第一篇博客算完成了,希望以后可以长写。

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

AI Hentai Generator
Generate AI Hentai for free.

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 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

To work on file upload we are going to use the form helper. Here, is an example for file upload.

Validator can be created by adding the following two lines in the controller.

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

CakePHP is an open source MVC framework. It makes developing, deploying and maintaining applications much easier. CakePHP has a number of libraries to reduce the overload of most common tasks.

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an
