php 生成文字png图片
转:About
php 生成文字png图片
使用GD生成文字图片是php一项比较常用的功能,笔者今天介绍的是生成文字png图片的函数。喜欢的朋友收藏吧^_^
view sourceprint?
- <?
- /*
- php生成文字png图片,可以使用如下方式调用函数:
- http://www.yourdomian.com/text_png.php3?msg=helloworld+class&rot=15&size=48&font=fonts/ARIAL.TTF
- */
- Header("Content-type: image/png");
- class textPNG {
- var $font = 'fonts/TIMES.TTF'; //默认字体. 相对于脚本存放目录的相对路径.
- var $msg = "undefined"; // 默认文字.
- var $size = 24;
- var $rot = 0; // 旋转角度.
- var $pad = 0; // 填充.
- var $transparent = 1; // 文字透明度.
- var $red = 0; // 在黑色背景中...
- var $grn = 0;
- var $blu = 0;
- var $bg_red = 255; // 将文字设置为白色.
- var $bg_grn = 255;
- var $bg_blu = 255;
- function draw() {
- $width = 0;
- $height = 0;
- $offset_x = 0;
- $offset_y = 0;
- $bounds = array();
- $image = "";
- // 确定文字高度.
- $bounds = ImageTTFBBox($this->size, $this->rot, $this->font, "W");
- if ($this->rot < 0) {
- $font_height = abs($bounds[7]-$bounds[1]);
- } else if ($this->rot > 0) {
- $font_height = abs($bounds[1]-$bounds[7]);
- } else {
- $font_height = abs($bounds[7]-$bounds[1]);
- }
- // 确定边框高度.
- $bounds = ImageTTFBBox($this->size, $this->rot, $this->font, $this->msg);
- if ($this->rot < 0) {
- $width = abs($bounds[4]-$bounds[0]);
- $height = abs($bounds[3]-$bounds[7]);
- $offset_y = $font_height;
- $offset_x = 0;
- } else if ($this->rot > 0) {
- $width = abs($bounds[2]-$bounds[6]);
- $height = abs($bounds[1]-$bounds[5]);
- $offset_y = abs($bounds[7]-$bounds[5])+$font_height;
- $offset_x = abs($bounds[0]-$bounds[6]);
- } else {
- $width = abs($bounds[4]-$bounds[6]);
- $height = abs($bounds[7]-$bounds[1]);
- $offset_y = $font_height;;
- $offset_x = 0;
- }
- $image = imagecreate($width+($this->pad*2)+1,$height+($this->pad*2)+1);
- $background = ImageColorAllocate($image, $this->bg_red, $this->bg_grn, $this->bg_blu);
- $foreground = ImageColorAllocate($image, $this->red, $this->grn, $this->blu);
- if ($this->transparent) ImageColorTransparent($image, $background);
- ImageInterlace($image, false);
- // 画图.
- ImageTTFText($image, $this->size, $this->rot, $offset_x+$this->pad, $offset_y+$this->pad, $foreground, $this->font, $this->msg);
- // 输出为png格式.
- imagePNG($image);
- }
- }
- $text = new textPNG;
- if (isset($msg)) $text->msg = $msg; // 需要显示的文字
- if (isset($font)) $text->font = $font; // 字体
- if (isset($size)) $text->size = $size; // 文字大小
- if (isset($rot)) $text->rot = $rot; // 旋转角度
- if (isset($pad)) $text->pad = $pad; // padding
- if (isset($red)) $text->red = $red; // 文字颜色
- if (isset($grn)) $text->grn = $grn; // ..
- if (isset($blu)) $text->blu = $blu; // ..
- if (isset($bg_red)) $text->bg_red = $bg_red; // 背景颜色.
- if (isset($bg_grn)) $text->bg_grn = $bg_grn; // ..
- if (isset($bg_blu)) $text->bg_blu = $bg_blu; // ..
- if (isset($tr)) $text->transparent = $tr; // 透明度 (boolean).
- $text->draw();
- ?>
复制代码
如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱,如果其他用户或者作者回复了您的评论,将不能在第一时间通知您!
发布评论
评论(1)
了解了,顶。。。