将指定的文字生成png图片，可自行定义文字，字体，字体颜色，背景颜色等
<? /* php生成文字png图片，可以使用如下方式调用函数: */ Header("Content-type: image/png"); $msg="测试文字生成图片";//$_POST['msg']; //文字 $fil="a.png";//$_POST['fil']; //生成图片的名称 //$fontS=$_POST['fontS']; //字体 $fontC="#00aeef";//$_POST['fontC']; //字体颜色#000或#000000 //$font = 'FONTS/'.$fontS; $fontColor=hex2rgb($fontC); $red = $fontColor['red']; // 字体颜色 $grn = $fontColor['green']; $blu = $fontColor['blue']; function hex2rgb( $colour ) { if ( $colour[0] == '#' ) { $colour = substr( $colour, 1 ); } if ( strlen( $colour ) == 6 ) { list( $r, $g, $b ) = array( $colour[0] . $colour[1], $colour[2] . $colour[3], $colour[4] . $colour[5] ); } elseif ( strlen( $colour ) == 3 ) { list( $r, $g, $b ) = array( $colour[0] . $colour[0], $colour[1] . $colour[1], $colour[2] . $colour[2] ); } else { return false; } $r = hexdec( $r ); $g = hexdec( $g ); $b = hexdec( $b ); return array( 'red' => $r, 'green' => $g, 'blue' => $b ); } //测试 //var_dump(hex2rgb("#eeeeee")); class textPNG { var $font = 'FONTS/88.otf';//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 = 40; var $rot = 0; // 旋转角度. var $pad = 0; // 填充. var $transparent = 1; // 文字透明度. var $red = 0; // 字体颜色 var $grn = 0; var $blu = 0; var $bg_red = 255; // 将背景设置为白色. var $bg_grn = 255; var $bg_blu = 255; var $fil = "1.png"; function draw() { $width = 0; $height = 0; $offset_x = 10; $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+20; $offset_x = 0; } else if ($this->rot > 0) { $width = abs($bounds[2]-$bounds[6]); $height = abs($bounds[1]-$bounds[5]); $offset_y = abs($bounds[7]-$bounds[5])+$font_height+20; $offset_x = abs($bounds[0]-$bounds[6]); } else { $width = abs($bounds[4]-$bounds[6])+20; $height = abs($bounds[7]-$bounds[1])+40; $offset_y = $font_height+5+20; $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,$this->fil); } } $text = new textPNG; if (isset($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 = $tr; // 透明度 (boolean). if (isset($fil)) $text->fil = $fil; $text->draw(); ?>