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,今天介绍的是生成文字png图片的函数。喜欢的朋友收藏吧^_^
原文:http://www.cnphp.info/php-text-to-png.html

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();
?>

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