php-GD库函数(3)
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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