PHP Imagegif函数代码示例

 private function createnewpicture()
 {
     $local = $this->path_two . $this->file['name'];
     move_uploaded_file($this->file['tmp_name'], $local);
     $filename = $this->file['tmp_name'] . "/" . $this->file['name'];
     $this->location = $this->path . "/" . $this->file['name'];
     switch ($this->file['type']) {
         case 'image/jpeg':
             $src = imagecreatefromjpeg($local);
             break;
         case 'image/png':
             $src = imagecreatefrompng($local);
             break;
         case 'image/gif':
             $src = imagecreatefromgif($local);
             break;
         default:
             break;
     }
     $sx = imagesx($src);
     $sy = imagesy($src);
     $new_image = imagecreatetruecolor($this->newwidth, $this->newheight);
     if (imagecopyresized($new_image, $src, 0, 0, 0, 0, $this->newwidth, $this->newheight, $sx, $sy)) {
         if (ImageJpeg($new_image, $this->location) || Imagegif($new_image, $this->location) || Imagepng($new_image, $this->location)) {
             //imagejpeg($this->location);
             return true;
         }
     } else {
         return false;
     }
 }

 public function createBarCode($image_type = 'png', $file_name = null)
 {
     $this->parseCode();
     $this->image = ImageCreate($this->width + 2 * $this->quiet_zone, $this->height + $this->font_height + $this->quiet_zone);
     $this->bgcolor = imagecolorallocate($this->image, $this->bgcolor >> 16, $this->bgcolor >> 8 & 0xff, $this->bgcolor & 0xff);
     $this->color = imagecolorallocate($this->image, $this->color >> 16, $this->color >> 8 & 0xff, $this->color & 0xff);
     ImageFilledRectangle($this->image, 0, 0, $this->width + 2 * $this->quiet_zone, $this->height + $this->font_height, $this->bgcolor);
     $sx = $this->quiet_zone;
     $sy = $this->font_height - 1;
     $fw = 10;
     //編號為2或3的字體的寬度為10，為4或5的字體寬度為11
     if ($this->font_type > 3) {
         $sy++;
         $fw = 11;
     }
     $ex = 0;
     if ($this->text) {
         //不显示号码，则生成满的条码
         if ($this->showType == 'top') {
             $ey = $this->height + $this->font_height - 2;
             //条码显示上方
         } else {
             if ($this->showType == 'bottom') {
                 $ey = $this->height - 2;
                 //条码显示下方
                 $sy = $this->quiet_zone;
             }
         }
     } else {
         $ey = $this->height + $this->font_height;
         $sy = $this->quiet_zone;
     }
     for ($i = 0; $i < strlen($this->bin_code); $i++) {
         $ex = $sx + $this->unit_width * (int) $this->bin_code[$i] - 1;
         if ($i % 2 == 0) {
             ImageFilledRectangle($this->image, $sx, $sy, $ex, $ey, $this->color);
         }
         $sx = $ex + 1;
     }
     if ($this->text) {
         //存在条码号再显示
         $t_num = strlen($this->text);
         $t_x = $this->width / $t_num;
         $t_sx = ($t_x - $fw) / 2;
         //目的为了使文字居中平均分布
         if ($this->showType == 'top') {
             $y = 0;
         } else {
             if ($this->showType == 'bottom') {
                 $y = $this->height;
             }
         }
         for ($i = 0; $i < $t_num; $i++) {
             imagechar($this->image, $this->font_type, 6 * $this->unit_width + $t_sx + $i * $t_x, $y, $this->text[$i], $this->color);
         }
     }
     if (!$file_name) {
         header("Content-Type: image/" . $image_type);
     }
     switch ($image_type) {
         case 'jpg':
         case 'jpeg':
             Imagejpeg($this->image, $file_name);
             break;
         case 'png':
             Imagepng($this->image, $file_name);
             break;
         case 'gif':
             break;
             Imagegif($this->image, $file_name);
         default:
             Imagepng($this->image, $file_name);
             break;
     }
 }

 public function getCode()
 {
     Header("Content-type: image/png");
     /*
      * 初始化
      */
     $border = 1;
     //是否要边框 1要:0不要
     $how = 4;
     //验证码位数
     $w = $how * 15;
     //图片宽度
     $h = 20;
     //图片高度
     $fontsize = 6;
     //字体大小
     $alpha = "abcdefghijkmnopqrstuvwxyz";
     //验证码内容1:字母
     $number = "023456789";
     //验证码内容2:数字
     $randcode = "";
     //验证码字符串初始化
     srand((double) microtime() * 1000000);
     //初始化随机数种子
     $im = ImageCreate($w, $h);
     //创建验证图片
     /*
      * 绘制基本框架
      */
     $bgcolor = ImageColorAllocate($im, 255, 255, 255);
     //设置背景颜色
     ImageFill($im, 0, 0, $bgcolor);
     //填充背景色
     if ($border) {
         $black = ImageColorAllocate($im, 0, 0, 0);
         //设置边框颜色
         ImageRectangle($im, 0, 0, $w - 1, $h - 1, $black);
         //绘制边框
     }
     /*
      * 逐位产生随机字符
      */
     for ($i = 0; $i < $how; $i++) {
         $alpha_or_number = mt_rand(0, 1);
         //字母还是数字
         $str = $alpha_or_number ? $alpha : $number;
         $which = mt_rand(0, strlen($str) - 1);
         //取哪个字符
         $code = substr($str, $which, 1);
         //取字符
         $j = !$i ? 4 : $j + 15;
         //绘字符位置
         $color3 = ImageColorAllocate($im, mt_rand(0, 100), mt_rand(0, 100), mt_rand(0, 100));
         //字符随即颜色
         ImageChar($im, $fontsize, $j, 3, $code, $color3);
         //绘字符
         $randcode .= $code;
         //逐位加入验证码字符串
     }
     //把验证码字符串写入session
     session_start();
     $_SESSION['authnum_session'] = $randcode;
     /*
      * 添加干扰
      */
     for ($i = 0; $i < 1; $i++) {
         $color1 = ImageColorAllocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
         //干扰线颜色
         ImageArc($im, mt_rand(-5, $w), mt_rand(-5, $h), mt_rand(20, 300), mt_rand(20, 200), 55, 44, $color1);
         //干扰线
     }
     for ($i = 0; $i < $how * 40; $i++) {
         $color2 = ImageColorAllocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
         //干扰点颜色
         ImageSetPixel($im, mt_rand(0, $w), mt_rand(0, $h), $color2);
         //干扰点
     }
     //关键代码，防止出现'图像因其本身有错无法显示'的问题
     ob_clean();
     /*绘图结束*/
     Imagegif($im);
     ImageDestroy($im);
     /*绘图结束*/
 }

        fwrite($fp, $ob_contents);
        fclose($fp);
        ob_end_flush();
    }
}
if (substr($_GET['img'], -3) == "gif") {
    header("Content-type: image/gif");
    if (file_exists($path)) {
        echo file_get_contents($path);
    } else {
        $dst_img = ImageCreate($new_w, $new_h);
        $src_img = ImageCreateFromGif($_image_);
        ImagePaletteCopy($dst_img, $src_img);
        ImageCopyResized($dst_img, $src_img, 0, 0, 0, 0, $new_w, $new_h, ImageSX($src_img), ImageSY($src_img));
        ob_start();
        $img = Imagegif($dst_img, '', $_quality_);
        $ob_contents = ob_get_contents();
        // Save file
        $fp = fopen("{$path}", 'wb');
        fwrite($fp, $ob_contents);
        fclose($fp);
        ob_end_flush();
    }
}
if (substr($_GET['img'], -3) == "png") {
    header("Content-type: image/png");
    if (file_exists($path)) {
        echo file_get_contents($path);
    } else {
        if (strnatcmp(phpversion(), '4.3.0') > 0) {
            $_quality_ = (int) ($_quality_ / 10);

 function show()
 {
     Header("Content-type: image/gif");
     /*
      * ��ʼ��
      */
     $border = 0;
     //�Ƿ�Ҫ�߿� 1Ҫ:0��Ҫ
     $how = $this->num;
     //��֤��λ��
     $w = $this->width;
     //ͼƬ���
     $h = $this->height;
     //ͼƬ�߶�
     $fontsize = 5;
     //�����С
     $alpha = "abcdefghijkmnopqrstuvwxyz";
     //��֤������1:��ĸ
     $number = "023456789";
     //��֤������2:����
     $randcode = "";
     //��֤���ַ�����ʼ��
     srand((double) microtime() * 1000000);
     //��ʼ�����������
     $im = ImageCreate($w, $h);
     //������֤ͼƬ
     /*
      * ���ƻ������
      */
     $bgcolor = ImageColorAllocate($im, 255, 255, 255);
     //���ñ�����ɫ
     ImageFill($im, 0, 0, $bgcolor);
     //��䱳��ɫ
     if ($border) {
         $black = ImageColorAllocate($im, 0, 0, 0);
         //���ñ߿���ɫ
         ImageRectangle($im, 0, 0, $w - 1, $h - 1, $black);
         //���Ʊ߿�
     }
     /*
      * ��λ��������ַ�
      */
     for ($i = 0; $i < $how; $i++) {
         $alpha_or_number = mt_rand(0, 1);
         //��ĸ��������
         $str = $alpha_or_number ? $alpha : $number;
         $which = mt_rand(0, strlen($str) - 1);
         //ȡ�ĸ��ַ�
         $code = substr($str, $which, 1);
         //ȡ�ַ�
         $j = !$i ? 4 : $j + 15;
         //���ַ�λ��
         $color3 = ImageColorAllocate($im, mt_rand(0, 100), mt_rand(0, 100), mt_rand(0, 100));
         //�ַ��漴��ɫ
         ImageChar($im, $fontsize, $j, 3, $code, $color3);
         //���ַ�
         $randcode .= $code;
         //��λ������֤���ַ���
     }
     /*
      * ��Ӹ���
      */
     for ($i = 0; $i < 5; $i++) {
         $color1 = ImageColorAllocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
         //��������ɫ
         ImageArc($im, mt_rand(-5, $w), mt_rand(-5, $h), mt_rand(20, 300), mt_rand(20, 200), 55, 44, $color1);
         //������
     }
     for ($i = 0; $i < $how * 15; $i++) {
         $color2 = ImageColorAllocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
         //���ŵ���ɫ
         ImageSetPixel($im, mt_rand(0, $w), mt_rand(0, $h), $color2);
         //���ŵ�
     }
     //����֤���ַ���д��session
     //$this->session->set_userdata(array($this->name=>$randcode));
     $_SESSION[$this->name] = $randcode;
     /*��ͼ����*/
     Imagegif($im);
     ImageDestroy($im);
     /*��ͼ����*/
 }

srand((double) microtime() * 1000000);
$im = ImageCreate($w, $h);
$bgcolor = ImageColorAllocate($im, 255, 255, 255);
ImageFill($im, 0, 0, $bgcolor);
if ($border) {
    $black = ImageColorAllocate($im, 0, 0, 0);
    ImageRectangle($im, 0, 0, $w - 1, $h - 1, $black);
}
for ($i = 0; $i < $how; $i++) {
    $alpha_or_number = mt_rand(0, 1);
    $str = $alpha_or_number ? $alpha : $number;
    $which = mt_rand(0, strlen($str) - 1);
    $code = substr($str, $which, 1);
    $j = !$i ? 4 : $j + 15;
    $color3 = ImageColorAllocate($im, mt_rand(0, 100), mt_rand(0, 100), mt_rand(0, 100));
    ImageChar($im, $fontsize, $j, 3, $code, $color3);
    $randcode .= $code;
}
for ($i = 0; $i < 5; $i++) {
    $color1 = ImageColorAllocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
    ImageArc($im, mt_rand(-5, $w), mt_rand(-5, $h), mt_rand(20, 300), mt_rand(20, 200), 55, 44, $color1);
}
for ($i = 0; $i < $how * 40; $i++) {
    $color2 = ImageColorAllocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
    ImageSetPixel($im, mt_rand(0, $w), mt_rand(0, $h), $color2);
}
$_SESSION['randcode'] = $randcode;
Imagegif($im);
ImageDestroy($im);
?>
 

 /**
  * 生产验证码
  */
 function show()
 {
     /*
      * 初始化
      */
     $randcode = "";
     //验证码字符串初始化
     $im = ImageCreate($this->width, $this->height);
     //创建验证图片
     /*
      * 绘制基本框架
      */
     $bgcolor = ImageColorAllocate($im, 255, 255, 255);
     //设置背景颜色
     ImageFill($im, 0, 0, $bgcolor);
     //填充背景色
     if ($this->border) {
         $black = ImageColorAllocate($im, 0, 0, 0);
         //设置边框颜色
         ImageRectangle($im, 0, 0, $w - 1, $h - 1, $black);
         //绘制边框
     }
     /*
      * 逐位产生随机字符
      */
     for ($i = 0; $i < $this->num; $i++) {
         $alpha_or_number = mt_rand(0, 1);
         //字母还是数字
         $str = $alpha_or_number ? $this->alpha : $this->number;
         $which = mt_rand(0, strlen($str) - 1);
         //取哪个字符
         $code = substr($str, $which, 1);
         //取字符
         $j = !$i ? 4 : $j + 15;
         //绘字符位置
         $color3 = ImageColorAllocate($im, mt_rand(0, 100), mt_rand(0, 100), mt_rand(0, 100));
         //字符随即颜色
         imagettftext($im, $this->fontsize, 0, $j, $this->fontsize * 1.5, $color3, $this->fontpath, $code);
         //绘字符
         $randcode .= $code;
         //逐位加入验证码字符串
     }
     /*
      * 添加干扰
      */
     for ($i = 0; $i < 5; $i++) {
         $color1 = ImageColorAllocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
         //干扰线颜色
         ImageArc($im, mt_rand(-5, $this->width), mt_rand(-5, $this->height), mt_rand(20, 300), mt_rand(20, 200), 55, 44, $color1);
         //干扰线
     }
     for ($i = 0; $i < $this->num * 15; $i++) {
         $color2 = ImageColorAllocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
         //干扰点颜色
         ImageSetPixel($im, mt_rand(0, $this->width), mt_rand(0, $this->height), $color2);
         //干扰点
     }
     // 保存验证码
     $key = $this->authcode($this->seKey);
     $code = $this->authcode(strtoupper($randcode));
     $secode = array();
     $secode['verify_code'] = $code;
     // 把校验码保存到session
     $secode['verify_time'] = $this->now;
     // 验证码创建时间
     $_SESSION[$key] = $secode;
     /*绘图结束*/
     Header("Content-type: image/gif");
     Imagegif($im);
     ImageDestroy($im);
     /*绘图结束*/
 }

 function imageResize()
 {
     global $engine_path, $ImageTrimX, $ImageTrimY;
     $source = $this->image;
     $newWidth = $this->newWidth;
     $newHeight = $this->newHeight;
     $imType = $this->type;
     if ($imType == "jpeg" || $imType == "pjpeg") {
         $srcImage = ImageCreateFromJPEG($source);
     } elseif ($imType == "gif") {
         $srcImage = LoadGif($source);
     } else {
         $srcImage = ImageCreateFromPNG($source);
     }
     $srcWidth = ImageSX($srcImage);
     $srcHeight = ImageSY($srcImage);
     $ratioWidth = $srcWidth / $newWidth;
     $ratioHeight = $srcHeight / $newHeight;
     if ($ratioWidth < 1 && $this->fix == "width" || $ratioHeight < 1 && $this->fix == "height") {
         $destWidth = $srcWidth;
         $destHeight = $srcHeight;
         //print "mode 1";
         //exit;
     } elseif ($ratioWidth > $ratioHeight || $ratioWidth < $ratioHeight && $this->fix != "width" || $this->fix == "height") {
         $destWidth = $srcWidth / $ratioHeight;
         $destHeight = $newHeight;
         //print "mode 2";
         //exit;
     } else {
         $destWidth = $newWidth;
         $destHeight = $srcHeight / $ratioWidth;
         //print "mode 3 $ratioHeight $ratioWidth $this->fix";
         //exit;
     }
     //$this->newWidth=$destWidth;
     //$this->newHeight=$desHeight;
     //print "$this->newWidth - $this->newHeight";
     //print $srcImage." $ratioWidth $ratioHeight $this->fix $destWidth $destHeight";
     //print "-($newHeight-$destHeight)/2";
     //exit;
     if ($newWidth != $srcWidth && $newHeight != $srcHeight && $newWidth != 160) {
         if (!strlen($ImageTrim)) {
             $ImageTrim = 2;
         }
         if ($ImageTrimY == 0) {
             $y = 0;
         } elseif ($ImageTrimY == 1) {
             $y = ($newHeight - $destHeight) / 4;
         } elseif ($ImageTrimY == 2) {
             $y = ($newHeight - $destHeight) / 2;
         } elseif ($ImageTrimY == 3) {
             $y = 3 * ($newHeight - $destHeight) / 2;
         } elseif ($ImageTrimY == 4) {
             $y = 5 * ($newHeight - $destHeight) / 2;
         }
         if ($ImageTrimX == 0) {
             $x = 0;
         } elseif ($ImageTrimX == 1) {
             $x = ($newWidth - $destWidth) / 4;
         } elseif ($ImageTrimX == 2) {
             $x = ($newWidth - $destWidth) / 2;
         } elseif ($ImageTrimX == 3) {
             $x = 3 * ($newWidth - $destWidth) / 2;
         } elseif ($ImageTrimX == 4) {
             $x = 5 * ($newWidth - $destWidth) / 2;
         }
         //print "$ImageTrimY $ImageTrimX $x $y";
         //exit;
         $destImage = imagecreatetruecolor($newWidth, $newHeight);
         imagecopyresampled($destImage, $srcImage, $x, $y, 0, 0, $destWidth, $destHeight, $srcWidth, $srcHeight);
     } else {
         $destImage = imagecreatetruecolor($destWidth, $destHeight);
         imagecopyresampled($destImage, $srcImage, 0, 0, 0, 0, $destWidth, $destHeight, $srcWidth, $srcHeight);
     }
     if ($this->mix) {
         $destImage = $this->mix($destImage);
     }
     $name = $engine_path . "img/small/" . $this->name;
     if ($imType == "jpeg" || $imType == "pjpeg") {
         Imagejpeg($destImage, $name);
     } elseif ($imType == "gif") {
         Imagegif($destImage, $name);
     } else {
         Imagepng($destImage, $name);
     }
     $file['tmp_name'] = $name;
     ImageDestroy($srcImage);
     ImageDestroy($destImage);
     return $file;
 }

 function resizeImage($originalImage, $newImage, $newWidth, $newHeight, $bgred = 0xff, $bggreen = 0xff, $bgblue = 0xff, $interlace = 1, $jpegquality = 75)
 {
     //abre imagem original
     switch ($imageType = exif_imagetype($originalImage)) {
         case IMAGETYPE_GIF:
             if (imagetypes() & IMG_GIF) {
                 $imOriginal = @imagecreatefromgif($originalImage);
             } else {
                 die('<P>Formato de imagem não suportado pelo PHP: ' . $imageType . ' ' . image_type_to_mime_type($imageType) . '.</P>');
             }
             break;
         case IMAGETYPE_JPEG:
             if (imagetypes() & IMG_JPG) {
                 $imOriginal = @imagecreatefromjpeg($originalImage);
             } else {
                 die('<P>Formato de imagem não suportado pelo PHP: ' . $imageType . ' ' . image_type_to_mime_type($imageType) . '.</P>');
             }
             break;
         case IMAGETYPE_PNG:
             if (imagetypes() & IMG_PNG) {
                 $imOriginal = @imagecreatefrompng($originalImage);
             } else {
                 die('<P>Formato de imagem não suportado pelo PHP: ' . $imageType . ' ' . image_type_to_mime_type($imageType) . '.</P>');
             }
             break;
         default:
             die('<P>Formato de imagem não reconhecido pelo algoritmo: ' . $imageType . ' ' . image_type_to_mime_type($imageType) . '.</P>');
     }
     if (!$imOriginal) {
         return false;
     }
     //cria a imagem nova
     $imThumb = @imagecreatetruecolor($newWidth, $newHeight);
     if (!$imThumb) {
         return false;
     }
     imagefilledrectangle($imThumb, 0, 0, $newWidth, $newHeight, imagecolorallocate($imThumb, $bgred, $bggreen, $bgblue));
     //cuida do aspect ratio
     $xOrig = imagesx($imOriginal);
     $yOrig = imagesy($imOriginal);
     $xThumb = $newWidth;
     $yThumb = $newHeight;
     $ratioOrig = $xOrig / $yOrig;
     $ratioThumb = $xThumb / $yThumb;
     if ($ratioOrig > $ratioThumb) {
         $yThumb = round($xThumb / $ratioOrig);
     } elseif ($ratioOrig < $ratioThumb) {
         $xThumb = round($yThumb * $ratioOrig);
     }
     $xMargin = round(($newWidth - $xThumb) / 2);
     $yMargin = round(($newHeight - $yThumb) / 2);
     //modifica o tamanho
     imagecopyresampled($imThumb, $imOriginal, $xMargin, $yMargin, 0, 0, $xThumb, $yThumb, $xOrig, $yOrig);
     ImageDestroy($imOriginal);
     //entrelaça, se necessário
     if ($interlace) {
         imageinterlace($imThumb, $interlace);
     }
     //salva a imagem
     if (!$newImage) {
         Header('Content-type: ' . image_type_to_mime_type($imageType));
     }
     switch ($imageType) {
         case IMAGETYPE_GIF:
             Imagegif($imThumb, $newImage);
             break;
         case IMAGETYPE_JPEG:
             Imagejpeg($imThumb, $newImage, $jpegquality);
             break;
         case IMAGETYPE_PNG:
             if ($newImage) {
                 Imagepng($imThumb, $newImage);
             } else {
                 Imagepng($imThumb);
             }
             break;
     }
     ImageDestroy($imThumb);
     return true;
 }

<?php 
// erstmal ein neues leeres Bild erstellen (breite, höhe)
$buchbild = imagecreate(140, 180);
// ne Hintergrundfarbe erstellen, die später zur Transparenz genutzt wird
// (am Besten ne Farbe, die selten in Bildern verwendet wird)
$hintergrundfarbe = imagecolorallocate($buchbild, 255, 0, 255);
// eine Grafik erstellen von nem vorhandenen Bild (buch2.gif muss da sein)
$buchgrafik = ImageCreateFromGIF("buch2.gif");
// diese Grafik in unser Bild kopieren
// Imagecopy(zielgrafik, quellgrafik, zielX, zielY, quelleX, quelleY, quB, quH)
Imagecopy($buchbild, $buchgrafik, 0, 0, 0, 0, 140, 180);
// eine Textfarbe erstellen
$textfarbe = imagecolorallocate($buchbild, 0, 0, 0);
// einen Text ALS BILD erstellen
// ImageString(zielgrafik,schrift,X,Y,text,textfarbe)
ImageString($buchbild, 5, 23, 50, "mein Text", $textfarbe);
ImageString($buchbild, 2, 23, 65, "noch einer", $textfarbe);
ImageString($buchbild, 1, 23, 100, "von: mir", $textfarbe);
// nun unser (evtl. vorher schon transparentes) GIF transparent machen
// imagecolortransparent(grafik, farbe)
imagecolortransparent($buchbild, $hintergrundfarbe);
// und abspeichern (Imagegif(bild, zielort, qualität))
Imagegif($buchbild, "erstelltesBild.gif", 100);
?>


<img src="erstelltesBild.gif">

</body>
</html>

 function _output_image($destination_file, $image_type, $image)
 {
     //if destination file is empty image will be output to browser
     // right now $image_type can be JPEG or PNG
     global $ERR, $create_text;
     $destination_file = trim($destination_file);
     $res = false;
     //Create Text
     $white = ImageColorAllocate($image, 255, 255, 255);
     $black = ImageColorAllocate($image, 0, 0, 0);
     $red = ImageColorAllocate($image, 255, 0, 0);
     $blue = ImageColorAllocate($image, 0, 0, 255);
     $lightblue = ImageColorAllocate($image, 0, 128, 255);
     $green = ImageColorAllocate($image, 0, 255, 0);
     $violet = ImageColorAllocate($image, 225, 128, 225);
     $orange = ImageColorAllocate($image, 255, 128, 0);
     $gray = ImageColorAllocate($image, 192, 192, 192);
     $pink = ImageColorAllocate($image, 255, 0, 128);
     $brown = ImageColorAllocate($image, 128, 0, 0);
     $darkgreen = ImageColorAllocate($image, 0, 128, 0);
     ImageString($image, 3, 2, 1, $create_text, $white);
     if ($image) {
         switch ($image_type) {
             case 'JPEG':
             case 'JPG':
                 $res = ImageJpeg($image, $destination_file, $this->jpeg_quality);
                 break;
             case 'PNG':
                 $res = Imagepng($image, $destination_file);
                 break;
             case 'GIF':
                 $res = Imagegif($image, $destination_file);
                 break;
             default:
                 $this->error($ERR["UNKNOWN_OUTPUT_FORMAT"] . " {$image_type}");
                 break;
         }
     } else {
         $this->error($ERR["NO_IMAGE_FOR_OUTPUT"]);
     }
     if (!$res) {
         $this->error($ERR["UNABLE_TO_OUTPUT"] . " {$destination_file}");
     }
     return $res;
 }

function overlay($backpic, $overpic, $x, $y, $w, $h)
{
    $backsize = getimagesize($backpic);
    $oversize = getimagesize($overpic);
    if ($backsize[2] == 1) {
        $dstimg = ImageCreateFromGIF($backpic);
    } elseif ($backsize[2] == 2) {
        $dstimg = ImageCreateFromJPEG($backpic);
    } elseif ($backsize[2] == 3) {
        $dstimg = ImageCreateFromPNG($backpic);
    }
    if ($oversize[2] == 1) {
        $srcimg = ImageCreateFromGIF($overpic);
    } elseif ($oversize[2] == 2) {
        $srcimg = ImageCreateFromJPEG($overpic);
    } elseif ($oversize[2] == 3) {
        $srcimg = ImageCreateFromPNG($overpic);
    }
    Imagecopymerge($dstimg, $srcimg, $x, $y, 0, 0, $w, $h, 100);
    if ($backsize[2] == 1) {
        Imagegif($dstimg, $backpic, 100);
    } elseif ($backsize[2] == 2) {
        Imagejpeg($dstimg, $backpic, 100);
    } elseif ($backsize[2] == 3) {
        Imagepng($dstimg, $backpic, 0);
    }
    @ImageDestroy($dstimg);
    @ImageDestroy($srcimg);
}

function gdfillcolor($srcFile, $dstFile, $dstW, $dstH)
{
    @ImageAlphaBlending($srcFile, true);
    $picdata = GetImageSize($srcFile);
    switch ($picdata[2]) {
        case 1:
            $im = @ImageCreateFromGIF($srcFile);
            break;
        case 2:
            $im = @imageCreateFromJpeg($srcFile);
            break;
        case 3:
            $im = @ImageCreateFromPNG($srcFile);
            break;
        case 6:
            $im = @ImageCreateFromWbmp($srcFile);
            break;
    }
    $srcW = ImageSX($im);
    $srcH = ImageSY($im);
    $dstX = 0;
    $dstY = 0;
    if ($srcW * $dstH > $srcH * $dstW) {
        $fdstH = round($srcH * $dstW / $srcW);
        $dstY = floor(($dstH - $fdstH) / 2);
        $fdstW = $dstW;
    } else {
        $fdstW = round($srcW * $dstH / $srcH);
        $dstX = floor(($dstW - $fdstW) / 2);
        $fdstH = $dstH;
    }
    $dstX = $dstX < 0 ? 0 : $dstX;
    $dstY = $dstX < 0 ? 0 : $dstY;
    $dstX = $dstX > $dstW / 2 ? floor($dstW / 2) : $dstX;
    $dstY = $dstY > $dstH / 2 ? floor($dstH / s) : $dstY;
    $ni = imagecreatetruecolor($dstW, $dstH);
    $black = ImageColorAllocate($ni, 255, 255, 255);
    $white = ImageColorAllocate($ni, 255, 255, 255);
    imagefilledrectangle($ni, 0, 0, $dstW, $dstH, $black);
    // 填充剩余背景色
    if (function_exists("imagecopyresampled")) {
        // 改变图片大小
        imagecopyresampled($ni, $im, $dstX, $dstY, 0, 0, $fdstW, $fdstH, $srcW, $srcH);
    } else {
        imagecopyresized($ni, $im, $dstX, $dstY, 0, 0, $fdstW, $fdstH, $srcW, $srcH);
    }
    if (function_exists("Imagegif")) {
        Imagegif($ni, $dstFile);
        // 输出到文件
    } else {
        ImageJpeg($ni, $dstFile);
    }
    imagedestroy($im);
    // 清理内存
    imagedestroy($ni);
}

function uploadimg($filename, $width, $get_height, $path)
{
    if (trim($_FILES["image"]["tmp_name"]) != "") {
        $tmp_images = $_FILES["image"]["tmp_name"];
        // type select
        if ($_FILES['image']['type'] == 'image/jpeg' or $_FILES['image']['type'] == 'image/jpg' or $_FILES['image']['type'] == 'image/pjpeg') {
            $images = $filename . ".jpg";
            //upload source image
            $size = getimagesize($tmp_images);
            //check radio widht and height
            $height = round($width * $size[1] / $size[0]);
            if ($height > $get_height) {
                $width = round($get_height * $size[0] / $size[1]);
                $height = $get_height;
            }
            $images_orig = ImageCreateFromJPEG($tmp_images);
            $photoX = ImagesX($images_orig);
            $photoY = ImagesY($images_orig);
            $images_fin = ImageCreateTrueColor($width, $height);
            ImageCopyResampled($images_fin, $images_orig, 0, 0, 0, 0, $width + 1, $height + 1, $photoX, $photoY);
            ImageJPEG($images_fin, $path . $images);
            ImageDestroy($images_orig);
            ImageDestroy($images_fin);
            return $filename . ".jpg";
        } elseif ($_FILES['image']['type'] == 'image/x-png' or $_FILES['image']['type'] == 'image/png') {
            $images = $filename . ".png";
            $size = getimagesize($tmp_images);
            //check radio widht and height
            $height = round($width * $size[1] / $size[0]);
            if ($height > $get_height) {
                $width = round($get_height * $size[0] / $size[1]);
                $height = $get_height;
            }
            $images_orig = ImageCreateFromPNG($tmp_images);
            $photoX = ImagesX($images_orig);
            $photoY = ImagesY($images_orig);
            $images_fin = ImageCreateTrueColor($width, $height);
            ImageCopyResampled($images_fin, $images_orig, 0, 0, 0, 0, $width + 1, $height + 1, $photoX, $photoY);
            Imagepng($images_fin, $path . $images);
            ImageDestroy($images_orig);
            ImageDestroy($images_fin);
            return $filename . ".png";
        } elseif ($_FILES['image']['type'] == 'image/gif') {
            $images = $filename . ".gif";
            $size = getimagesize($tmp_images);
            //check radio widht and height
            $height = round($width * $size[1] / $size[0]);
            if ($height > $get_height) {
                $width = round($get_height * $size[0] / $size[1]);
                $height = $get_height;
            }
            $images_orig = ImageCreateFromgif($tmp_images);
            $photoX = ImagesX($images_orig);
            $photoY = ImagesY($images_orig);
            $images_fin = ImageCreateTrueColor($width, $height);
            ImageCopyResampled($images_fin, $images_orig, 0, 0, 0, 0, $width + 1, $height + 1, $photoX, $photoY);
            Imagegif($images_fin, $path . $images);
            ImageDestroy($images_orig);
            ImageDestroy($images_fin);
            return $filename . ".gif";
        } else {
            return FALSE;
        }
    }
}

                    break;
                case 'image/png':
                    $src = imagecreatefrompng($local);
                    break;
                case 'image/gif':
                    $src = imagecreatefromgif($local);
                    break;
                default:
                    break;
            }
            $sx = imagesx($src);
            //获取原图的宽
            $sy = imagesy($src);
            //获取原图的高
            $new_image = imagecreatetruecolor($width, $height);
            //用刚才给定的长和宽建立一张白的缩略图。
            imagecopyresized($new_image, $src, 0, 0, 0, 0, $width, $height, $sx, $sy);
            //把原图压到这张白图里头
            if (Imagejpeg($new_image, $localtion) || Imagegif($new_image, $localtion) || Imagepng($new_image, $localtion)) {
                //转移缩略图
                echo "制作完成";
                echo "<img src='{$localtion}' mce_src='{$localtion}'>";
                //将缩略图显示
            }
        } else {
            echo " <script> alert('验证码输入错误');history.back()</script>";
        }
    }
} else {
    echo "不存在";
}