PHP哄骗GD库画曲线
添加时间:2013-7-23 点击量:
结果:
PHP代码
<?php
Header(Content-type: image/png;Charset:utf-8); //声明
¥im = imagecreate(400,200);
//get color.
¥bg = imagecolorallocate(¥im,0,0,0);
¥red = imagecolorallocate(¥im,255,0,255);
¥white = imagecolorallocate(¥im,255,255,255);
¥arrowX = array(394,97,399,100,394,103);
¥arrowY = array(197,5,200,0,203,5);
//画曲线
for(¥i=0;¥i<380;¥i+=0.1){
¥x = ¥i/20;
¥y = sin(¥x);
¥y = 100 + 40¥y;
imagesetpixel(¥im,¥i+10,¥y,¥red);
}
//画X轴和Y轴
imageline(¥im,0,100,394,100,¥white);
imageline(¥im,200,5,200,200,¥white);
//画坐标title
imagestring(¥im,4,350,110,XShaft,¥white);
//画箭头
imagefilledpolygon(¥im,¥arrowX,3,¥white);
imagefilledpolygon(¥im,¥arrowY,3,¥white);
imagepng(¥im);
imagedestroy(¥im);
?>