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php-GD库函数(三)

<?php //imagefilledellipse — 画一椭圆并填充	/*bool imagefilledellipse ( resource $image , int $cx , int $cy , int $w , int $h , int $color )	$image:图片资源	$cx:左边离圆心的位置	$cy:上边离圆心的位置	$w:圆形的直径(左右方向)	$h:圆形的直径(上下方向)	$color:填充的颜色	$im = imagecreatetruecolor(100,100);	$red = imagecolorallocate($im,0,255,0);	imagefilledellipse($im,50,50,80,80,$red);	header('Content-type: image/png');	imagepng($im);	*/	//imagefilledpolygon — 画一多边形并填充	/*bool imagefilledpolygon ( resource $image , array $points , int $num_points , int $color )	$image:图片资源	$points:参数是一个按顺序包含有多边形各顶点的 x 和 y 坐标的数组	$num_points:参数是顶点的总数,必须大于 3	$color:颜色	$im = imagecreatetruecolor(200,200);	$value = array(	25,40,36,53,87,12,45,98,56,23);	$red = imagecolorallocate($im,255,0,0);	imagefilledpolygon($im,$value,5,$red);	header('Content-type: image/png');	imagepng($im);	*/	//imagefilledrectangle — 画一矩形并填充	/*bool imagefilledrectangle ( resource $image , int $x1 , int $y1 , int $x2 , int $y2 , int $color )	$image:图片资源	$x1:点到左边的距离	$y1:点到上边的距离	$x2:点到左边的距离	$y2:点到上边的距离	$color:填充的颜色	$im = imagecreatetruecolor(200,200);	$red = imagecolorallocate($im,255,0,0);	imagefilledrectangle($im,10,10,190,190,$red);	header('Content-type:image/png');	imagepng($im);	*/		//imagefontheight — 取得字体高度	/*$font_size = 1;	$a = imagefontheight($font_size);	echo $a;	*/	//imagefontwidth — 取得字体宽度	/*$font_size = 1;	$b = imagefontwidth($font_size);	echo $b;	*/		//imageline — 画一条线段	/*bool imageline ( resource $image , int $x1 , int $y1 , int $x2 , int $y2 , int $color )	$image:图片资源	$x1:点到左边的距离	$y1:点到上边的距离	$x2:点到左边的距离	$y2:点到上边的距离	$color:线段的颜色	$im = imagecreatetruecolor(200,200);	$red = imagecolorallocate($im,255,0,0);	imageline($im,10,10,100,100,$red);	header('Content-type:image/png');	imagepng($im);	*/		//imagepolygon — 画一个多边形	/*bool imagepolygon ( resource $image , array $points , int $num_points , int $color )	$image:图片资源	$points:参数是一个按顺序包含有多边形各顶点的 x 和 y 坐标的数组	$num_points:是顶点的总数。大于3	$color:线段的颜色	$im = imagecreatetruecolor(200,200);	$red = imagecolorallocate($im,255,0,0);	$value = array(13,45,23,56,23,45,78,99);	imagepolygon($im,$value,4,$red);	header('Content-type:image/png');	imagepng($im);	*/		//imagerectangle — 画一个矩形	/*bool imagerectangle ( resource $image , int $x1 , int $y1 , int $x2 , int $y2 , int $col )	$image:图片资源	$x1:点到左边的距离	$y1:点到上边的距离	$x2:点到左边的距离	$y2:点到上边的距离	$col:线段的颜色	$im = imagecreatetruecolor(200,200);	$red = imagecolorallocate($im,255,0,0);	imagerectangle($im,10,10,100,100,$red);	header('Content-type:image/png');	imagepng($im);	*/		//imagerotate — 用给定角度旋转图像	/*resource imagerotate ( resource $src_im , float $angle , int $bgd_color [, int $ignore_transparent ] )	$src_im:资源图片	$angle:旋转的度数	$bgd_color:背景颜色	$source = imagecreatefromjpeg('1.jpg');	$rotate = imagerotate($source,45, 26);	header('Content-type: image/jpeg');	imagejpeg($rotate); 	*/	//imagesetpixel — 画一个单一像素	/*bool imagesetpixel ( resource $image , int $x , int $y , int $color )	$image:图片资源	$x:点到左边的距离	$y:点到上边的距离	$color:点的颜色	$im = imagecreatetruecolor(100,100);	$red = imagecolorallocate($im,255,0,0);	imagesetpixel($im,50,50,$red);	header('Content-type: image/jpeg');	imagejpeg($im); 	*/	//imagesetstyle — 设定画线的风格	/*bool imagesetstyle ( resource $image , array $style )	$image:图片资源	$style:style 参数是像素组成的数组。下面的示例脚本在画布上从左上角到右下角画一行虚线: 	header("Content-type: image/jpeg");	$im  = imagecreatetruecolor(100, 100);	$w   = imagecolorallocate($im, 255, 255, 255);	$red = imagecolorallocate($im, 255, 0, 0);	$style = array($red, $red, $red, $red, $red, $w, $w, $w, $w, $w);	imagesetstyle($im,$style);	imageline($im, 0, 0, 100, 100, IMG_COLOR_STYLED);	imagejpeg($im);	imagedestroy($im);	*/	//imagestring — 水平地画一行字符串	/*bool imagestring ( resource $image , int $font , int $x , int $y , string $s , int $col )	$image:图片资源	$font:字体大小	$x:文字到左边的距离	$y:文字到上边的距离	$s:文字内容	$col:文字颜色	$im = imagecreatetruecolor(100,100);	$red = imagecolorallocate($im, 255, 0, 0);	imagestring($im,5,10,10,'helloworld',$red);	header("Content-type: image/jpeg");	imagejpeg($im);	imagedestroy($im);	*/	//imagestringup — 垂直地画一行字符串	/*bool imagestringup ( resource $image , int $font , int $x , int $y , string $s , int $col )	$image:图片资源	$font:字体大小	$x:文字到左边的距离	$y:文字到上边的距离	$s:文字内容	$col:文字颜色	$im = imagecreatetruecolor(100,100);	$red = imagecolorallocate($im, 255, 0, 0);	imagestringup ($im,5,20,90,'helloworld',$red);	header("Content-type: image/jpeg");	imagejpeg($im);	imagedestroy($im);	*/	//imagesx — 取得图像宽度	/*$im = imagecreatetruecolor(200,100);	echo imagesx($im);	*/	//imagesy — 取得图像长度	/*$im = imagecreatetruecolor(200,100);	echo imagesy($im);	*/	//imagegd2 — 将 GD2 图像输出到浏览器或文件	//imagegd — 将 GD 图像输出到浏览器或文件	//imagegif — 以 GIF 格式将图像输出到浏览器或文件	//imagejpeg — 以 JPEG 格式将图像输出到浏览器或文件	//imagepng — 以 PNG 格式将图像输出到浏览器或文件	//imagewbmp — 以 WBMP 格式将图像输出到浏览器或文件	//imagexbm — 将 XBM 图像输出到浏览器或文件	/*以上都是函数如果有第二个参数那么会保存到文件上,如果没有第二个参数则会输出到浏览器上*/	?>

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