htmlheadtitle打印不同图形/titlemeta http-equiv="content-type" content="text/html;charset=utf-8"//headbody bgcolor="#C7EDCC" ?php $row = @$_REQUEST['row'];//加@是为了消除一开始页面没有输入数据的notice提示 $col = @$_
<html>
<head>
<title>打印不同图形</title>
<meta http-equiv="content-type" content="text/html;charset=utf-8"/>
</head>
<body bgcolor="#C7EDCC">
<?php
$row = @$_REQUEST['row'];//加@是为了消除一开始页面没有输入数据的notice提示
$col = @$_REQUEST['col'];
$shape = @$_REQUEST['shape'];
function printShape($row,$col,$shape)
{
switch ($shape)
{
case 'a':
for ($i=1;$i<$row;$i++)
{
for ($j=0;$j<$col;$j++)
echo "*";
echo "<br/>";
}
break;
case 'b':
for ($i=1;$i<$row;$i++)
{
for ($j=0;$j<$i;$j++)
echo "*";
echo "<br/>";
}
break;
case 'c':
for ($i=1;$i<$row;$i++)
{
for ($k=0;$k<$col-$i;$k++)
echo " ";
for ($j=0;$j<2*$i-1;$j++)
echo "*";
// for ($k=0;$k<round(($col-$i)/2);$k++)
// echo " ";
echo "<br/>";
}
break;
case 'd':
for ($i=1;$i<=$row;$i++)
{
for ($k=0;$k<$col-$i;$k++)
echo " ";
if ($i==1 || $i==$row)//第一行和最后一行不用控制
{
for ($j=1;$j<=2*$i-1;$j++)
echo "*";
echo "<br/>";
}
else
{
for ($j=1;$j<=2*$i-1;$j++)
{
if ($j==1 || $j==2*$i-1 )
echo "*";
else
echo " ";
}
echo "<br/>";
}
}
break;
default:
echo "您没有输入图形";
break;
}
}
?>
<form action="printShape.php" method="post">
<span>请输入打印的行数:</span><br/><input type="text" name="row" value="<?php echo $row?>"/><br/>
<span>请输入打印的列数:</span><br/><input type="text" name="col" value="<?php echo $col?>"/><br/>
<span>请输入打印的图形(a -- 矩形 b -- 半三角 c -- 实心金字塔 d--空心金字塔 ):</span><br/>
<select name="shape">
<option value='a'>矩形</option>
<option value='b'>半三角形</option>
<option value='c'>实金字塔</option>
<option value='d'>空心金字塔</option>
</select>
<input type="submit" value="提交打印"/>
</form>
<?php printShape($row,$col,$shape)?>
</body>
</html>