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 程式師世界 >> 編程語言 >> 網頁編程 >> PHP編程 >> 關於PHP編程 >> Php上傳、生成縮略圖、生成文字水印和圖片水印

Php上傳、生成縮略圖、生成文字水印和圖片水印

編輯:關於PHP編程

<?php
/*
'-##########################################-|
'|     程序設計:(綠竹居)                |
'|     MSN:[email][email protected][/email]         |
'|     Email:[email protected]              |
'|     結合自己以前做的上傳和生成縮略和改編一個
'|     老前輩的生成圖片水印做成這個                 |
'|     上傳+生成縮略圖+生成文字水印和圖片水印      |
'|     可以直接引用                             |
'-##########################################-|
*/
//審明圖片文件夾
$bigfolder="img";
$smallfolder="smallimg";
//審明文件夾名稱 以年月日來建議文件夾
$fdate=date("Ymd");
//echo $fdate;
//審明文件名稱。以年月日時分秒命名
$fname=date("YmdHis");
$bigname="0724e_com_".$fname;
$smallname="0724e_com_".$fname."_s";
//echo $fname."<br/>".$bigname."<br/>".$smallname;
//確定大小文件夾的名稱和路經
$bigaddrname=$bigfolder."/".$fdate."/".$bigname;
$smalladdrname=$smallfolder."/".$fdate."/".$smallname;
//審明小圖片的高度和寬度
$RESIZEWIDTH=180;
$RESIZEHEIGHT=150;
//審明水印的文字或圖片的地址及字體的地址
$imgaddr="img.jpg";    //圖片水印
$fontname="www.0724e.com";  //文字水印
//充許上傳的文件擴展名
$exit_name=array(".jpg",".gif",".png");
if (isset($_POST['Submit'])){
//上傳部分----------------------------
//定議上傳名稱和上傳錯誤
$upfile=$_FILES['image']['name'];
$uperror=$_FILES['image']['error'];
//最簡表單驗證

switch ($uperror) {
  case 1:
      die("<div align=\"center\">上傳真過PHP設置充許的最大值<a href=\"java script:history.back();\">點擊返回</a></div>");
  break;
  case 2:
   die("<div align=\"center\">上傳超過了表單充許的最大值<a href=\"java script:history.back();\">點擊返回</a></div>");
  break;
  case 3:
   die("<div align=\"center\">文件只有部分被上傳了<a href=\"java script:history.back();\">點擊返回</a></div>");
     break;
  case 4:
   die("<div align=\"center\">文件不有被上傳<a href=\"java script:history.back();\">點擊返回</a></div>");
     break;
}

//檢測擴展是否是充許上傳的文件類型
//取得文件擴展名
$exname=strrchr($upfile,".");
//判斷取得擴展名是否在要求的擴展名內
if(!in_array($exname,$exit_name))
die("<div align=\"center\">文件擴展名不對。只允許上傳jpg gif png的圖片<a href=\"java script:history.back();\">點擊返回</a></div>");

//檢測存放圖片的目錄和子目錄是否存在,如果不存在則建目錄和子目錄,並給目錄最大權限777 對LINUX或unix對WINDOWS沒必要
//大圖
if (!file_exists($bigfolder)){
  mkdir($bigfolder,0777);
  mkdir($bigfolder."/".$fdate,0777);
}else{
  if (!file_exists($bigfolder."/".$fdate)){
   mkdir($bigfolder."/".$fdate,0777);
  }
}
//縮略圖
if (!file_exists($smallfolder)){
  mkdir($smallfolder,0777);
  mkdir($smallfolder."/".$fdate,0777);
}else{
  if (!file_exists($smallfolder."/".$fdate)){
  mkdir($smallfolder."/".$fdate,0777);
  }
}
//創建目錄結束

//得到臨時上傳的文件
$upfiletmp=$_FILES['image']['tmp_name'];
//判斷臨時文件是否存在
if ($uperror==6)
die("<div align=\"center\">找不到臨時上傳文件,上傳失敗<a href=\"java script:history.back();\">點擊返回</a></div>");

//水印部分==========================================
//水印函數開始============
/**      $groundImage    背景圖片,即需要加水印的圖片,暫只支持GIF,JPG,PNG格式;
*      $waterPos       水印位置,有10種狀態,0為隨機位置;
*                      1為頂端居左,2為頂端居中,3為頂端居右;
*                      4為中部居左,5為中部居中,6為中部居右;
*                      7為底端居左,8為底端居中,9為底端居右;
*      $waterImage     圖片水印,即作為水印的圖片,暫只支持GIF,JPG,PNG格式;
*      $waterText      文字水印,即把文字作為為水印,支持ASCII碼,不支持中文;
*      $textFont       文字大小,值為1、2、3、4或5,默認為5;
*      $textColor      文字顏色,值為十六進制顏色值,默認為#FF0000(紅色);
* */

function imageWaterMark($groundImage,$waterPos=0,$waterImage="",$waterText="", $textFont=5,$textColor="#FF0000")
{
    $isWaterImage = FALSE;
    $formatMsg = "暫不支持該文件格式,請用圖片處理軟件將圖片轉換為GIF、JPG、PNG格式。";

    //讀取水印文件
    if(!empty($waterImage) && file_exists($waterImage)) {
        $isWaterImage = TRUE;
        $water_info = getimagesize($waterImage);
        $water_w    = $water_info[0];//取得水印圖片的寬
        $water_h    = $water_info[1];//取得水印圖片的高

        switch($water_info[2])  {   //取得水印圖片的格式 
            case 1:$water_im = imagecreatefromgif($waterImage);break;
            case 2:$water_im = imagecreatefromjpeg($waterImage);break;
            case 3:$water_im = imagecreatefrompng($waterImage);break;
            default:die($formatMsg);
        }
    }

    //讀取背景圖片
    if(!empty($groundImage) && file_exists($groundImage)) {
        $ground_info = getimagesize($groundImage);
        $ground_w    = $ground_info[0];//取得背景圖片的寬
        $ground_h    = $ground_info[1];//取得背景圖片的高

        switch($ground_info[2]) {   //取得背景圖片的格式 
            case 1:$ground_im = imagecreatefromgif($groundImage);break;
            case 2:$ground_im = imagecreatefromjpeg($groundImage);break;
            case 3:$ground_im = imagecreatefrompng($groundImage);break;
            default:die($formatMsg);
        }
    } else {
        die("需要加水印的圖片不存在!");
    }

    //水印位置
    if($isWaterImage) { //圖片水印 
        $w = $water_w;
        $h = $water_h;
        $label = "圖片的";
    } else {  //文字水印
        $temp = imagettfbbox(ceil($textFont*2.5),0,"./cour.ttf",$waterText);//取得使用 TrueType 字體的文本的范圍
        $w = $temp[2] - $temp[6];
        $h = $temp[3] - $temp[7];
        unset($temp);
        $label = "文字區域";
    }
    if( ($ground_w<$w) || ($ground_h<$h) ) {
        echo "需要加水印的圖片的長度或寬度比水印".$label."還小,無法生成水印!";
        return;
    }
    switch($waterPos) {
        case 0://隨機
            $posX = rand(0,($ground_w - $w));
            $posY = rand(0,($ground_h - $h));
            break;
        case 1://1為頂端居左
            $posX = 0;
            $posY = 0;
            break;
        case 2://2為頂端居中
            $posX = ($ground_w - $w) / 2;
            $posY = 0;
            break;
        case 3://3為頂端居右
            $posX = $ground_w - $w;
            $posY = 0;
            break;
        case 4://4為中部居左
            $posX = 0;
            $posY = ($ground_h - $h) / 2;
            break;
        case 5://5為中部居中
            $posX = ($ground_w - $w) / 2;
            $posY = ($ground_h - $h) / 2;
            break;
        case 6://6為中部居右
            $posX = $ground_w - $w;
            $posY = ($ground_h - $h) / 2;
            break;
        case 7://7為底端居左
            $posX = 0;
            $posY = $ground_h - $h;
            break;
        case 8://8為底端居中
            $posX = ($ground_w - $w) / 2;
            $posY = $ground_h - $h;
            break;
        case 9://9為底端居右
            $posX = $ground_w - $w;
            $posY = $ground_h - $h;
            break;
        default://隨機
            $posX = rand(0,($ground_w - $w));
            $posY = rand(0,($ground_h - $h));
            break;    
    }

    //設定圖像的混色模式
    imagealphablending($ground_im, true);

    if($isWaterImage) { //圖片水印
        imagecopy($ground_im, $water_im, $posX, $posY, 0, 0, $water_w,$water_h);//拷貝水印到目標文件        
    } else {//文字水印
        if( !empty($textColor) && (strlen($textColor)==7) ) {
            $R = hexdec(substr($textColor,1,2));
            $G = hexdec(substr($textColor,3,2));
            $B = hexdec(substr($textColor,5));
        } else {
            die("水印文字顏色格式不正確!");
        }
        imagestring ( $ground_im, $textFont, $posX, $posY, $waterText, imagecolorallocate($ground_im, $R, $G, $B));        
    }

    //生成水印後的圖片
    @unlink($groundImage);
    switch($ground_info[2]) {//取得背景圖片的格式
        case 1:imagegif($ground_im,$groundImage);break;
        case 2:imagejpeg($ground_im,$groundImage);break;
        case 3:imagepng($ground_im,$groundImage);break;
        default:die($errorMsg);
    }

    //釋放內存
    if(isset($water_info)) unset($water_info);
    if(isset($water_im)) imagedestroy($water_im);
    unset($ground_info);
    imagedestroy($ground_im);
}
//水印函數完


//存在則移動完在上傳
$goodupfile=@move_uploaded_file($upfiletmp,$bigaddrname.$exname);
if (!$goodupfile){
die("<div align=\"center\">上傳圖片失敗<a href=\"java script:history.back();\">點擊返回</a></div>");
}else{
 
//文字水印
    imageWaterMark($bigaddrname.$exname,5,"",$fontname,5,"#FF0000");

    //圖片水印
    //imageWaterMark($bigaddrname.$exname,5,$imgaddr);
//結束水印部分===================================
  

//縮略圖部分------------------------------------------------------------
//判斷縮略圖大小函數-----
    function ResizeImage($im,$maxwidth,$maxheight,$name){
    $width = imagesx($im);
    $height = imagesy($im);
    if(($maxwidth && $width > $maxwidth) || ($maxheight && $height > $maxheight)){
        if($maxwidth && $width > $maxwidth){
            $widthratio = $maxwidth/$width;
            $RESIZEWIDTH=true;
        }
        if($maxheight && $height > $maxheight){
            $heightratio = $maxheight/$height;
            $RESIZEHEIGHT=true;
        }
        if($RESIZEWIDTH && $RESIZEHEIGHT){
            if($widthratio < $heightratio){
                $ratio = $widthratio;
            }else{
                $ratio = $heightratio;
            }
        }elseif($RESIZEWIDTH){
            $ratio = $widthratio;
        }elseif($RESIZEHEIGHT){
            $ratio = $heightratio;
        }
        $newwidth = $width * $ratio;
        $newheight = $height * $ratio;
        if(function_exists("imagecopyresampled")){
              $newim = imagecreatetruecolor($newwidth, $newheight);
              imagecopyresampled($newim, $im, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
        }else{
            $newim = imagecreate($newwidth, $newheight);
              imagecopyresized($newim, $im, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
        }
        ImageJpeg ($newim,$smalladdrname.$name.".jpg");
        ImageDestroy ($newim);
    }else{
        ImageJpeg ($im,$smalladdrname.$name.".jpg");
    }
    }
    //生成部分
    if($_FILES['image']['size']){
    if($_FILES['image']['type'] == "image/pjpeg"){
        $im = imagecreatefromjpeg($bigaddrname.$exname);
    }elseif($_FILES['image']['type'] == "image/x-png"){
        $im = imagecreatefrompng($bigaddrname.$exname);
    }elseif($_FILES['image']['type'] == "image/gif"){
        $im = imagecreatefromgif($bigaddrname.$exname);
    }
    if($im){
        if(file_exists($smalladdrname.".jpg")){
            unlink($smalladdrname.".jpg");
        }
        ResizeImage($im,$RESIZEWIDTH,$RESIZEHEIGHT,$smalladdrname);
        ImageDestroy ($im);
    }
    }
    echo "<div align='center'><a href='java script:window.history.back()'>上傳成功</a></div>";
}
//縮略圖結束-----------------------------------------------------
 
}
?>

 

 <form action="" method="post" enctype="multipart/form-data" name="form1" id="form1">
  <input type="file" name="image" />
  <input type="hidden" name="MAX_FILE_SIZE" value="<?=1024*100?>">
  <input type="submit" name="Submit" value="上傳圖片" />
</form>

 

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