PHP中使用循环实现的金字塔图形,php循环金字塔图形
PHP中使用循环实现的金字塔图形,php循环金字塔图形
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:
复制代码 代码如下:
for ($i=1;$i
switch ($i){
case 1:
echo " "."*"." ";
break;
case 2:
echo " ";
break;
case 3:
echo " "."*"." "."*"." ";
break;
case 4:
echo " ";
break;
case 5:
echo "*"." "."*"." "."*";
break;
}
echo "
";
实现效果就是老师要求的图像,不过老师觉得应该还有更简单的实现方式,可以将空格和*号分开输出;
于是就有了第二种:
复制代码 代码如下:
for($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。

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