php 图片上传类代码

$imgCount = count($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;