PHP文件上传：如何将文件名中的空格替换为横杠

Hey there! The issue here is that you’re using the original filename directly without modifying any spaces. Let’s fix this easily with PHP’s str_replace() function, which lets you swap spaces for dashes in just one line.

Step-by-Step Fix Breakdown #

The core change is modifying the original filename before using it in your file path and success message. We’ll use str_replace(' ', '-', $_FILES["fileToUpload"]["name"]) to replace every space in the filename with a dash (-).

Modified Full Code #

<?php 
$target_dir = "uploads/"; 
// Create a cleaned filename with spaces replaced by dashes
$clean_filename = str_replace(' ', '-', $_FILES["fileToUpload"]["name"]);
$target_file = $target_dir . date('d_m_Y_H_i_s') . '_'. $clean_filename; 

if($target_file == null) { 
    echo"nada"; 
} 

$uploadOk = 1; 
$imageFileType = pathinfo($target_file, PATHINFO_EXTENSION); 

// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) { 
    $check = getimagesize($_FILES["fileToUpload"]["tmp_name"]); 
    if($check !== false) { 
        $uploadOk = 1; 
    } else { 
        echo "File is not an image."; 
        $uploadOk = 0; 
    } 
} 

// Check if file already exists
if (file_exists($target_file)) { 
    echo "Sorry, file already exists."; 
    $uploadOk = 0; 
} 

// Allow certain file formats
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg" && $imageFileType != "gif" ) { 
    echo "Only JPG, JPEG, PNG & GIF files are allowed."; 
    $uploadOk = 0; 
} 

// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) { 
    echo "Sorry, your file was not uploaded."; 
// if everything is ok, try to upload file
} else { 
    if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) { 
        // Use the cleaned filename in the success message too
        echo "The file ". basename(date('d_m_Y_H_i_s') . '_'. $clean_filename). " has been uploaded."; 
    } else { 
        echo "Sorry, there was an error uploading your file."; 
    } 
} 
?>

Key Changes Explained #

1. Cleaned Filename Variable: We added $clean_filename to store the modified version of the original filename, ensuring all spaces are replaced with dashes.
2. Updated Target Path: $target_file now uses this cleaned filename, so the saved file on your server will have no spaces.
3. Consistent Success Message: The success message uses the same cleaned filename, so the user sees the exact name of the file that was stored.

Bonus Optional Cleanup #

If you want to make filenames even more standardized (like avoiding case-sensitive duplicates), you can add strtolower() to convert the filename to lowercase:

$clean_filename = strtolower(str_replace(' ', '-', $_FILES["fileToUpload"]["name"]));

内容的提问来源于stack exchange，提问作者Gustavo Gbn