Question

我不擅长php编码，有人可以帮我解决这个php上传代码。

我有上传文件的php文件到服务器工作完美但我的问题是它将取代旧文件。我不想替换旧的，例如，如果文件存在上传文件重命名（文件到file_1）。

<?php

$target_path1 = "uploads/";
/* Add the original filename to our target path. Result is "uploads/filename.extension" */
$target_path1 = $target_path1 . basename($_FILES['uploaded_file']['name']);

if (move_uploaded_file($_FILES['uploaded_file']['tmp_name'], $target_path1)) {

    echo "The first file " . basename($_FILES['uploaded_file']['name']) . " has been uploaded.";
} else {
    echo "There was an error uploading the file, please try again!";
    echo "filename: " . basename($_FILES['uploaded_file']['name']);
    echo "target_path: " . $target_path1;
}

?>

我将非常感谢你的帮助......

Answer 1

你可以试试这个

if(!file_exists("folder/".$_FILES["file"]["name"])){
       $file = "folder/".$_FILES["file"]["name"];
       if(move_uploaded_file($tmp_name, $file));{
        "your message"
       }
 } else {
        $file = "your folder/01_".$_FILES["file"]["name"];
        if(move_uploaded_file($tmp_name, $file));{
         "your message"
    }
   }

你也可以使用rand（）函数重命名

Answer 2

使用上传文件时的if或while检查条件 if (file_exists("YOUR-FOLDER/" . $_FILES["file"]["name"])){ //code to rename your file name. Use time() or rand() etc... }

Answer 3

使用php函数isfile

检查您的文件

if (!is_file('uploads/'.$_FILES['uploaded_file']['tmp_name'])) {
    move_uploaded_file($_FILES['uploaded_file']['tmp_name'], $target_path1);
}

OR 您可以使用rename

uniqueid您的文件名

Answer 4

我认为有两种解决方案如果您只想要新文件名，可以在文件名末尾添加时间

if( isset($_FILES['uploaded_file']['name']) && !empty($_FILES['uploaded_file']['name']) ){
    $tFile = $_FILES['uploaded_file'];
    $fileName=time().$tFile['name'];
    $mn_dir='your folder location'.$fileName ;
    if( !@move_uploaded_file( $tFile['tmp_name'] , $mn_dir) ){
        return true
    }else{
        return false
    }
}

但如果要检查文件是否存在

if( file_exists("Your Folder/".$_FILES['uploaded_file']['name']) ){
    // you can add number to file , I think you should add tile because file_1 and file_2 , ... may be exist

    $tFile = $_FILES['uploaded_file'];
    $fileName=time().$tFile['name'];
    $mn_dir='your folder location'.$fileName ;
    if( !@move_uploaded_file( $tFile['tmp_name'] , $mn_dir) ){
        return true
    }else{
        return false
    }

}else{
    // upload the file
}

Answer 5

制作类似

的功能

public function getUniqueName($path, $name) {
    $name = str_replace(" ", "_", mb_eregi_replace('\s+', ' ', $name));

    $i = 0;
    $uniqueName = $name;
    while (file_exists("{$path}/{$uniqueName}")) {
        $i++;
        $uniqueName =  $name . $i;
    }
    return $uniqueName;
}

在上传文件之前，请通过该功能获取唯一名称。希望它有所帮助。

php文件上传不要替换旧文件

5 个答案: