复制代码 代码如下:

<?

/*

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();

?>