從遠程服務器和本地主機上的 PHP 目錄中刪除圖像文件

Question

我試圖弄清楚，如何從遠程服務器和本地主機上的目錄文件夾中正確刪除帶有summernote的圖像文件。

因此，圖像從 Summernote 編輯器成功上傳並按目錄路徑定位：

C:/xampp/htdocs/user/blog/uploads/img-uploads/154_20220702.png

和C:\xampp\htdocs\user\blog\admin\editor-delete.php代碼：

<?php
    $src  = $_POST['src']; 
    $path = "../uploads/img-uploads/";
    $dir = basename($path);
    $file_name = str_replace($dir, '', $src);
    unlink($file_name);
    if ($file_name) {          
        echo 'File Delete Successfully';
    }
?>

或者

$src  = $_POST['src'];
$dir = "../uploads/img-uploads/";
$file_name = str_replace($dir, '', $src);
unlink($file_name);
if ($file_name) {
    echo 'File Delete Successfully';
}

警告：unlink(): http 不允許在 C:\xampp\htdocs\user\blog\admin\editor-delete.ZE1BFD762321E409CEE364AC0B6E8491 中取消鏈接

$src  = $_POST['src'];
$dir = "../uploads/img-uploads/";
$file_name = str_replace($dir, '', $src);
unlink($_SERVER['DOCUMENT_ROOT'] . $file_name);
if ($file_name) {
    echo 'File Delete Successfully';
} 

本地主機正確路徑必須是C:/xampp/htdocs/blog/uploads/img-uploads/154_20220702.png ，但使用unlink($_SERVER['DOCUMENT_ROOT'].'/'. $file_name); 該路徑包含額外的http://localhost/user/在C:/xampp/htdocs/http://localhost/user/blog/uploads/img-uploads/154_20220702.png

警告：取消鏈接（C:/xampp/htdocshttp://localhost/user/blog/uploads/img-uploads/154_20220702.png）：C:\xampp\htdocs\user\blog\admin\editor 中沒有這樣的文件或目錄-delete.php

文件刪除成功

jquery-3.6.0.min.js:5177 XHR 完成加載：POST “http://localhost/user/blog/admin/editor-delete.php”。

Answer 1

我無法完全測試這一點，但我認為您可以像這樣更改editor-delete.php腳本。 從問題中引用的路徑來看，您需要通過將遍歷文件結構的管理目錄留給uploads/img-uploads來構建絕對路徑，因此chdir和getcwd是兩個有用的功能。 代碼中的注釋說明了我的意思。

顯示File Delete Successfully的代碼段基於始終為真（有效）的變量，而不是實際unlink操作的更有意義的結果，因此您應該使用該返回值來分叉您的程序邏輯。

<?php

    /* 
        C:\xampp\htdocs\user\blog\admin\editor-delete.php
        
        so:
        
        chdir('../') leads to C:\xampp\htdocs\user\blog\
        chdir('../uploads/img-uploads') should lead to C:\xampp\htdocs\user\blog\uploads\img-uploads
    */
    
    
    if( isset( $_POST['src'] ) ){
    
        # Change working directory for current script operations
        # - go up one level out of "admin" and into the uploads folder.
        
        chdir('../uploads/img-uploads');
        
        
        # default value for use later in output message
        $status=false;
        
        # construct the full path to local file using getcwd() to find working directory.
        $path=sprintf( '%s/%s', getcwd(), basename( $_POST['src'] ) );
        
        # if the file exists - delete it or warn ( inspect the path! )
        if( file_exists( $path ) )$status=@unlink( $path );
        else exit( sprintf( 'Unable to find file: "%s"', $path ) );
        
        # prevent cached results tainting file checks
        clearstatcache();
        
        
        echo $status ? 'File deleted successfully' : 'Sorry, that file could not be deleted';
    }
?>