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利用php输出不同的心形图案_PHP

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Release: 2016-05-27 10:18:27
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首先为大家分享php输出心形曲线的代码,代码如下

<&#63;php
for($t=0;$t<360;$t++)
{
 $y=2*cos($t)-cos(2*$t); //笛卡尔心形曲线函数
 $x=2*sin($t)-sin(2*$t);
 $x+=3;
 $y+=3;
 $x*=70;
 $y*=70;
 $x=round($x);
 $y=round($y);
 $str[]=$x;
 $y=$y+2*(180-$y);//图像上下翻转
 $x=$y;
 $str[]=$x;
}
 $im=imagecreate(400,400);//创建画布400*400
 $black=imagecolorallocate($im,0,0,0);
 $red=imagecolorallocate($im,255,0,0);//设置颜色
 imagepolygon($im,$str,360,$red);
 imagestring($im,5,190,190,"love",$red);//输出字符串
 header('Content-type:image/gif');//通知浏览器输出的是gif图片
 imagegif($im);//输出图片
 imagedestroy($im);//销毁
&#63;>
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效果如下:

利用php输出笛卡尔心形图案,代码如下

代码如下:

$width = 600; $height = 650; header("Content-type: image/gif"); $img = imagecreate($width,$height);//创建一张图片 $bg color = imagecolorallocate($img,0,0,0); $red = imagecolorallocate($img,255,0,0); for($i=0;$i

$width = 600;$height = 650;header("Content-type: image/gif");$img = imagecreate($width,$height);//创建一张图片$bg_color = imagecolorallocate($img,0,0,0);$red = imagecolorallocate($img,255,0,0);for($i=0;$i

以上就是本文的全部内容,希望对大家的学习有所帮助。

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