Use php to output different heart-shaped patterns_php skills

First of all, I would like to share with you the code for php to output a heart-shaped curve . The code is as follows

<&#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;>

The effect is as follows:

Use PHP to output the Cartesian heart pattern, the code is as follows

Copy code The code is as follows:

$width = 600; $height = 650; header("Content- type: image/gif"); $img = imagecreate($width,$height);//Create a picture $bg color = imagecolorallocate($img,0,0,0); $red = imagecolorallocate($img, 255,0,0); for($i=0;$i<=100;$i ){ for($j=0;$j<=100;$j ){ $r = M PI/50 $i * (1-sin(M_PI/50 $j)) 40; $x = $r cos(M PI/50 $j) sin(M PI/50 $i) $width/2; $y = -$r sin (M_PI/50*$j) $height/6; imagesetpixel($img,$x,$y,$red); } } imagegif($img); imagedestroy($img);

$width = 600;$height = 650;header("Content-type: image/gif");$img = imagecreate($width,$height);//Create an image$bg_color = imagecolorallocate($ img,0,0,0);$red = imagecolorallocate($img,255,0,0);for($i=0;$i<=100;$i ){for($j=0;$j< ;=100;$j ){ $r = M_PI/50*$i * (1-sin(M_PI/50*$j))*40;$x = $r *cos(M_PI/50*$j)* sin(M_PI/50*$i) $width/2;$y = -$r*sin(M_PI/50*$j) $height/6;imagesetpixel($img,$x,$y,$red); }}imagegif($img);imagedestroy($img);

The above is the entire content of this article, I hope it will be helpful to everyone’s study.