php 图片上传类代码

  先来个简单的:

  

复制代码 代码如下:

  <?

  //http://www.glzy8.com

  class upLoad{

  public $length; //限定文件大小

  public $file; //判断此类是用于图片上传还是文件上传

  public $fileName; //文件名

  public $fileTemp; //上传临时文件

  public $fileSize; //上传文件大小

  public $error; //上传文件是否有错,php4没有

  public $fileType; //上传文件类型

  public $directory; //

  public $maxLen;

  public $errormsg;

  function __construct($length,$file=true,$directory)

  {

  $this->maxLen=$length;

  $this->length=$length*1024;

  $this->file=$file; //true为一般文件,false为图片的判断

  $this->directory=$directory;

  }

  public function upLoadFile($fileField)

  {

  $this->fileName=$fileField['name'];

  $this->fileTemp=$fileField['tmp_name'];

  $this->error=$fileField['error'];

  $this->fileType=$fileField['type'];

  $this->fileSize=$fileField['size'];

  $pathSign = DIRECTORY_SEPARATOR; // /

  if($this->file) //一般文件上传

  {

  $path = $this->_isCreatedDir($this->directory);//取得路径

  if($path)//http://www.glzy8.com

  {

  $createFileType = $this->_getFileType($this->fileName);//设置文件类别

  $createFileName=uniqid(rand()); //随机产生文件名

  $thisDir=$this->directory.$pathSign.$createFileName.".".$createFileType;

  if(@move_uploaded_file($this->fileTemp,$thisDir)) //把临时文件移动到规定的路径下

  {

  return $thisDir;

  }

  }

  }else{ //图片上传

  $path = $this->_isCreatedDir($this->directory);//取得路径

  if($path)//路径存在//http://www.glzy8.com

  {

  $createFileType = $this->_getFileType($this->fileName);//设置文件类别

  $createFileName=uniqid(rand());

  return @move_uploaded_file($this->fileTemp,$this->directory.$pathSign.$createFileName.".".$createFileType) ? true : false;

  }

  }

  }

  public function _isBig($length,$fsize) //返回文件是否超过规定大小

  {

  return $fsize>$length ? true : false;

  }

  public function _getFileType($fileName) //获得文件的后缀

  {

  return end(explode(".",$fileName));

  }

  public function _isImg($fileType) //上传图片类型是否允许

  {

  $type=array("jpeg","gif","jpg","bmp");

  $fileType=strtolower($fileType);

  $fileArray=explode("/",$fileType);

  $file_type=end($fileArray);

  return in_array($file_type,$type);//http://www.glzy8.com

  }

  public function _isCreatedDir($path) //路径是否存在,不存在就创建

  {

  if(!file_exists($path))

  {

  return @mkdir($path,0755)?true:false; //权限755//

  }

  else

  {

  return true;

  }

  }

  public function showError() //显示错误信息

  {//http://www.glzy8.com

  echo "<Script Language ='JavaScript'>\n history.back();\n alert(' $this->errormsg');\n </Script> \n";

  exit();

  }

  }

  class multiUpLoad extends upLoad{

  public $FILES;

  function __construct($arrayFiles,$length,$file=true,$directory)

  {

  $this->FILES=$arrayFiles;

  parent::__construct($length,$file,$directory);

  }

  function upLoadMultiFile()

  {

  $arr=array();

  if($this->_judge()||$this->_judge()=="no") //文件全部符合规格,就开始上传

  {

  foreach($this->FILES as $key=>$value)

  {

  $strDir=parent::upLoadFile($this->FILES[$key]);

  array_push($arr, $strDir);

  }

  //http://www.glzy8.com

  return $arr;

  }else

  {

  return false;

  }

  }

  function _judge()

  {

  if($this->file)

  {

  foreach($this->FILES as $key=>$value)

  {

  if($this->_isBig($this->length,$value['size']))

  {

  $this->errormsg="文件超过 $this->maxLen K";

  parent::showError();

  }

  if($value['error']=UPLOAD_ERR_NO_FILE)

  {

  //$this->errormsg="上传文件出现错误";

  //parent::showError();

  return "no";

  }

  }

  return true;

  }else

  {

  //http://www.glzy8.com

  foreach($this->FILES as $key=>$value)

  {

  if($this->_isBig($this->length,$value['size']))

  {

  $this->errormsg="图片超过$this->maxLen";

  parent::showError();

  }

  if($value['error']!=0)

  {

  $this->errormsg="上传图片出现错误";

  parent::showError();

  }

  if(!$this->_isImg($value['type']))

  {

  $this->errormsg="图片格式不对";

  parent::showError();

  }

  }

  return true;

  }

  }

  }

  ?>

  再来个复杂点的,可以自动生成缩略图的功能的php上传类

  开始第一步:

  创建文件夹,布局:

  annex:附件(该目录下存放上传的原图片)

  |— smallimg:存放缩略图片

  |— mark:存放水印图片

  include:存放类文件,字体(本程序代码使用的是:04B_08__.TTF)

  |— upfile.php:集成简单上传,生成缩略图及水印的类文件信息

  |— 04B_08__.TTF:字体文件

  test.php:测试文件

  第二步上传类

  upfile.php

  

复制代码 代码如下:

  <?php

  class UPImages {

  var $annexFolder = "annex";//附件存放点,默认为:annex

  var $smallFolder = "smallimg";//缩略图存放路径,注:必须是放在 $annexFolder下的子目录,默认为:smallimg

  var $markFolder = "mark";//水印图片存放处

  var $upFileType = "jpg gif png";//上传的类型,默认为:jpg gif png rar zip

  var $upFileMax = 1024;//上传大小限制,单位是“KB”,默认为:1024KB

  var $fontType;//字体

  var $maxWidth = 500; //图片最大宽度

  var $maxHeight = 600; //图片最大高度

  function UPImages($annexFolder,$smallFolder,$includeFolder) {

  $this->annexFolder = $annexFolder;

  $this->smallFolder = $smallFolder;

  $this->fontType = $includeFolder."/04B_08__.TTF";

  }

  function upLoad($inputName) {

  $imageName = time();//设定当前时间为图片名称

  if(@empty($_FILES[$inputName]["name"])) die(error("没有上传图片信息,请确认"));

  $name = explode(".",$_FILES[$inputName]["name"]);//将上传前的文件以“.”分开取得文件类型

  $imgCount = count($name);//获得截取的数量

  $imgType = $name[$imgCount-1];//取得文件的类型

  if(strpos($this->upFileType,$imgType) === false) die(error("上传文件类型仅支持 ".$this->upFileType." 不支持 ".$imgType));

  $photo = $imageName.".".$imgType;//写入数据库的文件名

  $uploadFile = $this->annexFolder."/".$photo;//上传后的文件名称

  $upFileok = move_uploaded_file($_FILES[$inputName]["tmp_name"],$uploadFile);

  if($upFileok) {

  $imgSize = $_FILES[$inputName]["size"];

  $kSize = round($imgSize/1024);

  if($kSize > ($this->upFileMax*1024)) {

  @unlink($uploadFile);

  die(error("上传文件超过 ".$this->upFileMax."KB"));

  }

  } else {

  die(error("上传图片失败,请确认你的上传文件不超过 $upFileMax KB 或上传时间超时"));

  }

  return $photo;

  }

  function getInfo($photo) {

  $photo = $this->annexFolder."/".$photo;

  $imageInfo = getimagesize($photo);

  $imgInfo["width"] = $imageInfo[0];

  $imgInfo["height"] = $imageInfo[1];

  $imgInfo["type"] = $imageInfo[2];

  $imgInfo["name"] = basename($photo);

  return $imgInfo;

  }

  function smallImg($photo,$width=128,$height=128) {

  $imgInfo = $this->getInfo($photo);

  $photo = $this->annexFolder."/".$photo;//获得图片源

  $newName = substr($imgInfo["name"],0,strrpos($imgInfo["name"], "."))."_thumb.jpg";//新图片名称

  if($imgInfo["type"] == 1) {

  $img = imagecreatefromgif($photo);

  } elseif($imgInfo["type"] == 2) {

  $img = imagecreatefromjpeg($photo);

  } elseif($imgInfo["type"] == 3) {

  $img = imagecreatefrompng($photo);

  } else {

  $img = "";

  }

  if(empty($img)) return False;

  $width = ($width > $imgInfo["width"]) ? $imgInfo["width"] : $width;

  $height = ($height > $imgInfo["height"]) ? $imgInfo["height"] : $height;

  $srcW = $imgInfo["width"];

  $srcH = $imgInfo["height"];

  if ($srcW * $width > $srcH * $height) {

  $height = round($srcH * $width / $srcW);

  } else {

  $width = round($srcW * $height / $srcH);

  }

  if (function_exists("imagecreatetruecolor")) {

  $newImg = imagecreatetruecolor($width, $height);

  ImageCopyResampled($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);

  } else {

  $newImg = imagecreate($width, $height);

  ImageCopyResized($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);

  }

  if ($this->toFile) {

  if (file_exists($this->annexFolder."/".$this->smallFolder."/".$newName)) @unlink($this->annexFolder."/".$this->smallFolder."/".$newName);

  ImageJPEG($newImg,$this->annexFolder."/".$this->smallFolder."/".$newName);

  return $this->annexFolder."/".$this->smallFolder."/".$newName;

  } else {

  ImageJPEG($newImg);

  }

  ImageDestroy($newImg);

  ImageDestroy($img);

  return $newName;

  }

  function waterMark($photo,$text) {

  $imgInfo = $this->getInfo($photo);

  $photo = $this->annexFolder."/".$photo;

  $newName = substr($imgInfo["name"], 0, strrpos($imgInfo["name"], ".")) . "_mark.jpg";

  switch ($imgInfo["type"]) {

  case 1:

  $img = imagecreatefromgif($photo);

  break;

  case 2:

  $img = imagecreatefromjpeg($photo);

  break;

  case 3:

  $img = imagecreatefrompng($photo);

  break;

  default:

  return False;

  }

  if (empty($img)) return False;

  $width = ($this->maxWidth > $imgInfo["width"]) ? $imgInfo["width"] : $this->maxWidth;

  $height = ($this->maxHeight > $imgInfo["height"]) ? $imgInfo["height"] : $this->maxHeight;

  $srcW = $imgInfo["width"];

  $srcH = $imgInfo["height"];

  if ($srcW * $width > $srcH * $height) {

  $height = round($srcH * $width / $srcW);

  } else {

  $width = round($srcW * $height / $srcH);

  }

  if (function_exists("imagecreatetruecolor")) {

  $newImg = imagecreatetruecolor($width, $height);

  ImageCopyResampled($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);

  } else {

  $newImg = imagecreate($width, $height);

  ImageCopyResized($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);

  }

  $white = imageColorAllocate($newImg, 255, 255, 255);

  $black = imageColorAllocate($newImg, 0, 0, 0);

  $alpha = imageColorAllocateAlpha($newImg, 230, 230, 230, 40);

  ImageFilledRectangle($newImg, 0, $height-26, $width, $height, $alpha);

  ImageFilledRectangle($newImg, 13, $height-20, 15, $height-7, $black);

  ImageTTFText($newImg, 4.9, 0, 20, $height-14, $black, $this->fontType, $text[0]);

  ImageTTFText($newImg, 4.9, 0, 20, $height-6, $black, $this->fontType, $text[1]);

  if($this->toFile) {

  if (file_exists($this->annexFolder."/".$this->markFolder."/".$newName)) @unlink($this->annexFolder."/".$this->markFolder."/".$newName);

  ImageJPEG($newImg,$this->annexFolder."/".$this->markFolder."/".$newName);

  return $this->annexFolder."/".$this->markFolder."/".$newName;

  } else {

  ImageJPEG($newImg);

  }

  ImageDestroy($newImg);

  ImageDestroy($img);

  return $newName;

  }

  }

  ?>

  第三步:测试上传类

  test.php

  

复制代码 代码如下:

  <?php

  $annexFolder = "annex";

  $smallFolder = "smallimg";

  $markFolder = "mark";

  $includeFolder = "include";

  require("./".$includeFolder."/upfile.php");

  $img = new UPImages($annexFolder,$smallFolder,$includeFolder);

  $text = array("www.glzy8.com","all rights reserved");

  if(@$_GET["go"]) {

  $photo = $img->upLoad("upfile");

  $img->maxWidth = $img->maxHeight = 350;//设置生成水印图像值

  $img->toFile = true;

  $newSmallImg = $img->smallImg($photo);

  $newMark = $img->waterMark($photo,$text);

  echo "<img src='".$newSmallImg."' border='0'><br><br>";

  echo "<img src='".$newMark."' border='0'><br><br>";

  echo "<a href='./test.php'>继续上传</a>";

  } else {

  ?>

  <form method="post" action="./test.php?go=go" enctype="multipart/form-data">

  <input type="file" name="upfile"><br><br>

  <input type="submit" value="上传">

  </form>

  <?php

  }

  ?>