如何更改上傳文件的名稱而不更改擴展名

Question

我想將上傳文件的名稱更改爲md5（file_name）.ext，其中ext是上傳文件的擴展名。有什麼功能可以幫助我做到嗎？

Answer 1

$filename = basename($_FILES['file']['name']); 
$extension = pathinfo($filename, PATHINFO_EXTENSION); 
$new  = md5($filename).'.'.$extension; 

if (move_uploaded_file($_FILES['file']['tmp_name'], "/path/{$new}")) 
{ 
    // other code 
} 

Answer 2

使用此功能可以更改文件名MD5有相同的分機

function convert_filename_to_md5($filename) { 
    $filename_parts = explode('.',$filename); 
    $count = count($filename_parts); 
    if($count> 1) { 
     $ext = $filename_parts[$count-1]; 
     unset($filename_parts[$count-1]); 
     $filename_to_md5 = implode('.',$filename_parts); 
     $newName = md5($filename_to_md5). '.' . $ext ; 
    } else { 
     $newName = md5($filename); 
    }   
    return $newName; 
} 

Answer 3

找到下面的PHP代碼獲取文件擴展名更改文件名

<?php 
if(isset($_FILES['upload_Image']['name']) && $_FILES['upload_Image']['name']!=='') { 
    $ext = substr($_FILES['upload_Image']['name'], strpos($_FILES['upload_Image']['name'],'.'), strlen($_FILES['upload_Image']['name'])-1);  
    $imageName = time().$ext; 
    $normalDestination = "Photos/Orignal/" . $imageName; 
    move_uploaded_file($_FILES['upload_Image']['tmp_name'], $normalDestination); 
} 
?> 

Answer 4

這一個工作

<?php 

// Your file name you are uploading 
$file_name = $HTTP_POST_FILES['ufile']['name']; 

// random 4 digit to add to our file name 
// some people use date and time in stead of random digit 
$random_digit=rand(0000,9999); 

//combine random digit to you file name to create new file name 
//use dot (.) to combile these two variables 

$new_file_name=$random_digit.$file_name; 

//set where you want to store files 
//in this example we keep file in folder upload 
//$new_file_name = new upload file name 
//for example upload file name cartoon.gif . $path will be upload/cartoon.gif 
$path= "upload/".$new_file_name; 
if($ufile !=none) 
{ 
if(copy($HTTP_POST_FILES['ufile']['tmp_name'], $path)) 
{ 
echo "Successful<BR/>"; 

//$new_file_name = new file name 
//$HTTP_POST_FILES['ufile']['size'] = file size 
//$HTTP_POST_FILES['ufile']['type'] = type of file 
echo "File Name :".$new_file_name."<BR/>"; 
echo "File Size :".$HTTP_POST_FILES['ufile']['size']."<BR/>"; 
echo "File Type :".$HTTP_POST_FILES['ufile']['type']."<BR/>"; 
} 
else 
{ 
echo "Error"; 
} 
} 
?> 

Answer 5

<?php 
    $filename = $_FILES['file']['name']; 
    $extension = pathinfo($filename, PATHINFO_EXTENSION); 
    $new  = rand(0000,9999); 
    $newfilename=$new.$filename.$extension; 

    if (move_uploaded_file($_FILES['file']['tmp_name'],$newfilename)) 
    { 
     //advanced code 
    } 
    ?>