在上载php时重命名图像文件

我有一个上传图片的表格。index.html将数据提交到resizer.php。编码如下

index.html

<form action="resizer.php" method="post" enctype="multipart/form-data">
    Image: <input type="file" name="file" />
    <input type="submit" name="submit" value="upload" />
</form>

图片：

resizer.php

<?php
require_once('imageresizer.class.php');
$imagename = "myimagename";

//Path To Upload Directory
$dirpath = "uploaded/";

//MAX WIDTH AND HEIGHT OF IMAGE
$max_height = 100;
$max_width = 100;

//Create Image Control Object - Parameters(file name, file tmp name, file type, directory path)
$resizer = new ImageResizer($_FILES['file']['name'],$_FILES['file']['tmp_name'],$dirpath);

//RESIZE IMAGE - Parameteres(max height, max width)
$resizer->resizeImage($max_height,$max_width);

//Display Image
$resizer->showResizedImage();


?>

<?php

    class ImageResizer{
        public $file_name;
        public $tmp_name;
        public $dir_path;




        //Set variables
        public function __construct($file_name,$tmp_name,$dir_path){
            $this->file_name = $file_name;
            $this->tmp_name = $tmp_name;
            $this->dir_path = $dir_path;
            $this->getImageInfo();
            $this->moveImage();
        }
        //Move the uploaded image to the new directory and rename
        public function moveImage(){
            if(!is_dir($this->dir_path)){
                mkdir($this->dir_path,0777,true);
            }
            if(move_uploaded_file($this->tmp_name,$this->dir_path.$this->file_name)){
                $this->setFileName($this->dir_path.$this->file_name);
            }

        }

        //Define the new filename
        public function setFileName($file_name){
            $this->file_name = $file_name;
            return $this->file_name;
        }

        //Resize the image function with new max height and width
        public function resizeImage($max_height,$max_width){
            $this->max_height = $max_height;
            $this->max_width = $max_width;

            if($this->height > $this->width){
                $ratio = $this->height / $this->max_height;
                $new_height = $this->max_height;
                $new_width = ($this->width / $ratio);
            }
            elseif($this->height < $this->width){
                $ratio = ($this->width / $this->max_width);
                $new_width = $this->max_width;
                $new_height = ($this->height / $ratio);
            }
            else{
                $new_width = $this->max_width;
                $new_height = $this->max_height;
            }


            $thumb = imagecreatetruecolor($new_width, $new_height);

            switch($this->file_type){
                case 1:
                    $image = imagecreatefromgif($this->file_name);
                    break;
                case 2:
                    $image = imagecreatefromjpeg($this->file_name);
                    break;
                case 3:
                    $image = imagecreatefrompng($this->file_name);
                    break;
                case 4:
                    $image = imagecreatefromwbmp($this->file_name);
            }

            imagecopyresampled($thumb, $image, 0, 0, 0, 0, $new_width, $new_height, $this->width, $this->height);

            switch($this->file_type){
                case 1:
                    imagegif($thumb,$this->file_name);
                    break;
                case 2:
                    imagejpeg($thumb,$this->file_name,100);
                    break;
                case 3:
                    imagepng($thumb,$this->file_name,0);
                    break;
                case 4:
                    imagewbmp($thumb,$this->file_name);
            }

            imagedestroy($image);
            imagedestroy($thumb);
        }

        public function getImageInfo(){
            list($width, $height, $type) = getimagesize($this->tmp_name);
            $this->width = $width;
            $this->height = $height;
            $this->file_type = $type;

        }

        public function showResizedImage(){
            echo "<img src='".$this->file_name." />";
        }


        public function onSuccess(){
            header("location: index.php");
        }

    }
?>

imageresizer.class.php

<?php
require_once('imageresizer.class.php');
$imagename = "myimagename";

//Path To Upload Directory
$dirpath = "uploaded/";

//MAX WIDTH AND HEIGHT OF IMAGE
$max_height = 100;
$max_width = 100;

//Create Image Control Object - Parameters(file name, file tmp name, file type, directory path)
$resizer = new ImageResizer($_FILES['file']['name'],$_FILES['file']['tmp_name'],$dirpath);

//RESIZE IMAGE - Parameteres(max height, max width)
$resizer->resizeImage($max_height,$max_width);

//Display Image
$resizer->showResizedImage();


?>

<?php

    class ImageResizer{
        public $file_name;
        public $tmp_name;
        public $dir_path;




        //Set variables
        public function __construct($file_name,$tmp_name,$dir_path){
            $this->file_name = $file_name;
            $this->tmp_name = $tmp_name;
            $this->dir_path = $dir_path;
            $this->getImageInfo();
            $this->moveImage();
        }
        //Move the uploaded image to the new directory and rename
        public function moveImage(){
            if(!is_dir($this->dir_path)){
                mkdir($this->dir_path,0777,true);
            }
            if(move_uploaded_file($this->tmp_name,$this->dir_path.$this->file_name)){
                $this->setFileName($this->dir_path.$this->file_name);
            }

        }

        //Define the new filename
        public function setFileName($file_name){
            $this->file_name = $file_name;
            return $this->file_name;
        }

        //Resize the image function with new max height and width
        public function resizeImage($max_height,$max_width){
            $this->max_height = $max_height;
            $this->max_width = $max_width;

            if($this->height > $this->width){
                $ratio = $this->height / $this->max_height;
                $new_height = $this->max_height;
                $new_width = ($this->width / $ratio);
            }
            elseif($this->height < $this->width){
                $ratio = ($this->width / $this->max_width);
                $new_width = $this->max_width;
                $new_height = ($this->height / $ratio);
            }
            else{
                $new_width = $this->max_width;
                $new_height = $this->max_height;
            }


            $thumb = imagecreatetruecolor($new_width, $new_height);

            switch($this->file_type){
                case 1:
                    $image = imagecreatefromgif($this->file_name);
                    break;
                case 2:
                    $image = imagecreatefromjpeg($this->file_name);
                    break;
                case 3:
                    $image = imagecreatefrompng($this->file_name);
                    break;
                case 4:
                    $image = imagecreatefromwbmp($this->file_name);
            }

            imagecopyresampled($thumb, $image, 0, 0, 0, 0, $new_width, $new_height, $this->width, $this->height);

            switch($this->file_type){
                case 1:
                    imagegif($thumb,$this->file_name);
                    break;
                case 2:
                    imagejpeg($thumb,$this->file_name,100);
                    break;
                case 3:
                    imagepng($thumb,$this->file_name,0);
                    break;
                case 4:
                    imagewbmp($thumb,$this->file_name);
            }

            imagedestroy($image);
            imagedestroy($thumb);
        }

        public function getImageInfo(){
            list($width, $height, $type) = getimagesize($this->tmp_name);
            $this->width = $width;
            $this->height = $height;
            $this->file_type = $type;

        }

        public function showResizedImage(){
            echo "<img src='".$this->file_name." />";
        }


        public function onSuccess(){
            header("location: index.php");
        }

    }
?>

试试这个：

    public function moveImage(){
        global $imagename;
        if(!is_dir($this->dir_path)){
            mkdir($this->dir_path,0777,true);
        }
        if(move_uploaded_file($this->tmp_name,$this->dir_path.$imagename)){
            $fileParts = explode('.', $this->tmp_name);
            $this->setFileName($this->dir_path.$imagename.'.'.$fileParts[count($fileParts)-1]);
        }

    }

编辑：为您添加了扩展；-）
 

class ImageResizer{
    public $file_name;
    public $tmp_name;
    public $dir_path;

    //Set variables
    public function __construct($file_name,$tmp_name,$dir_path){
        $this->file_name =$foto = $dir.rand(00,999).date("-Y-m-d_H-i-s").$file_name;
        $this->tmp_name = $tmp_name;
        $this->dir_path = $dir_path;
        $this->getImageInfo();
        $this->moveImage();
        $sql="insert into foto (foto) values ('".$this->file_name."')";
        mysql_query($sql);
    }
    //Move the uploaded image to the new directory and rename
    public function moveImage(){
        if(!is_dir($this->dir_path)){
            mkdir($this->dir_path,0777,true);
        }
        if(move_uploaded_file($this->tmp_name,$this->dir_path.$this->file_name)){
            $this->setFileName($this->dir_path.$this->file_name);
            rename($this->file_name, $imagename );
        }

    }

    //Define the new filename
    public function setFileName($file_name){
        $this->file_name = $file_name;
        return $this->file_name;
    }

    //Resize the image function with new max height and width
    public function resizeImage($max_height,$max_width){
        $this->max_height = $max_height;
        $this->max_width = $max_width;

        if($this->height > $this->width){
            $ratio = $this->height / $this->max_height;
            $new_height = $this->max_height;
            $new_width = ($this->width / $ratio);
        }
        elseif($this->height < $this->width){
            $ratio = ($this->width / $this->max_width);
            $new_width = $this->max_width;
            $new_height = ($this->height / $ratio);
        }
        else{
            $new_width = $this->max_width;
            $new_height = $this->max_height;
        }


        $thumb = imagecreatetruecolor($new_width, $new_height);

        switch($this->file_type){
            case 1:
                $image = imagecreatefromgif($this->file_name);
                break;
            case 2:
                $image = imagecreatefromjpeg($this->file_name);
                break;
            case 3:
                $image = imagecreatefrompng($this->file_name);
                break;
            case 4:
                $image = imagecreatefromwbmp($this->file_name);
        }

        imagecopyresampled($thumb, $image, 0, 0, 0, 0, $new_width, $new_height, $this->width, $this->height);

        switch($this->file_type){
            case 1:
                imagegif($thumb,$this->file_name);
                break;
            case 2:
                imagejpeg($thumb,$this->file_name,100);
                break;
            case 3:
                imagepng($thumb,$this->file_name,0);
                break;
            case 4:
                imagewbmp($thumb,$this->file_name);
        }

        imagedestroy($image);
        imagedestroy($thumb);
    }

    public function getImageInfo(){
        list($width, $height, $type) = getimagesize($this->tmp_name);
        $this->width = $width;
        $this->height = $height;
        $this->file_type = $type;

    }

    public function showResizedImage(){
        echo "<img src='".$this->file_name." />";


    }


    public function onSuccess(){
        header("location: index.php");
    }

}

类图像大小调整器{
公共$文件名；
公共$tmp_名称；
公共$dir_path；
//设置变量
公共函数构造（$file\u name、$tmp\u name、$dir\u path）{
$this->file\u name=$foto=$dir.rand（00999）.date（“-Y-m-d\u H-i-s”）。$file\u name；
$this->tmp\u name=$tmp\u name；
$this->dir\u path=$dir\u path；
$this->getImageInfo（）；
$this->moveImage（）；
$sql=“插入foto（foto）值（“$this->file_name.”）；
mysql_查询（$sql）；
}
//将上载的图像移动到新目录并重命名
公共功能图像（）{
如果（！is_dir（$this->dir_path））{
mkdir（$this->dir\u path，0777，true）；
}
如果（移动上传的文件（$this->tmp\u name，$this->dir\u path.$this->file\u name））{
$this->setFileName（$this->dir\u path.$this->file\u name）；
重命名（$this->file\u name，$imagename）；
}
}
//定义新文件名
公共函数setFileName（$file\u name）{
$this->file\u name=$file\u name；
返回$this->file\u name；
}
//使用新的最大高度和宽度调整图像功能的大小
公共函数大小图像（$max\u height，$max\u width）{
$this->max\u height=$max\u height；
$this->max\u width=$max\u width；
如果（$this->height>$this->width）{
$ratio=$this->height/$this->max\u height；
$new\u height=$this->max\u height；
$new_width=（$this->width/$ratio）；
}
elseif（$this->height<$this->width）{
$ratio=（$this->width/$this->max_width）；
$new\u width=$this->max\u width；
$new_height=（$this->height/$ratio）；
}
否则{
$new\u width=$this->max\u width；
$new\u height=$this->max\u height；
}
$thumb=ImageCreateTureColor（$new\u宽度，$new\u高度）；
开关（$this->file\u type）{
案例1：
$image=imagecreatefromformgif（$this->file\u name）；
打破
案例2：
$image=imagecreatefromjpeg（$this->file\u name）；
打破
案例3：
$image=imagecreatefrompng（$this->file\u name）；
打破
案例4：
$image=imagecreatefromwbmp（$this->file\u name）；
}
imagecopyresampled（$thumb，$image，0，0，0，0，$new\u width，$new\u height，$this->width，$this->height）；
开关（$this->file\u type）{
案例1：
imagegif（$thumb，$this->file\u name）；
打破
案例2：
imagejpeg（$thumb，$this->file\u name，100）；
打破
案例3：
imagepng（$thumb，$this->file\u name，0）；
打破
案例4：
imagewbmp（$thumb，$this->file\u name）；
}
图像销毁（$图像）；
（拇指）；
}
公共函数getImageInfo（）{
列表（$width，$height，$type）=getimagesize（$this->tmp_name）；
$this->width=$width；
$this->height=$height；
$this->file_type=$type；
}
公共函数showResizedImage（）{
回显“文件名”。/>；
}
公共函数onSuccess（）{
标题（“location:index.php”）；
}
}

因此，您甚至不能用另一个变量替换此代码中的一个变量？可能您需要先花一些时间来理解此代码？是的..此上载文件，但没有扩展名不应提及扩展名，因为它还支持其他格式..出于好奇，您为什么评论自己的答案有效？它是如果你能描述一下最初的问题是什么，以及你是如何解决的，那就更好了，这样其他人就可以利用这篇文章来帮助他们解决类似的问题。