文件上传在 php 后端不工作。读取后找不到文件
我在 php 上制作了一个表单，并在那里添加了一个图像输入选项。
<form action="./assets/actions/gallery_post.php" id="upload-form" method="POST">
<input type="text" name="title" placeholder="Image title..." class="form-control" required>
<br>
<input type="text" name="description" placeholder="Image description..." class="form-control">
<br>
<input type="file" name="file", class="form-control" required>
<br>
<button type="submit" name="picture-submit" class="form-control submit">Upload Photo</button>
</form>
以下是我上传文件的 php 代码。
// Check if the button was pressed
if (isset($POST['picture-submit'])) {
echo "Entered";
// Get the inputs
$newfilename = 'gallery';
$title = $_POST['title'];
$description = $_POST['description'];
$file = $_FILES['file'];
if($file){
echo "FILE";
}else{
echo "No File found";
}
console.log($file);
// Obtaining some file information
$fileName = $file['name'];
$fileTmpName = $file['tmp_name'];
$fileError = $file['error'];
$fileType = $file['type'];
// Checking file extensions
$fileExt = explode('.', $fileName);
$fileActualExt = strtolower(end($fileExt));
echo "$fileActualExt";
// Allowed extensions
$allowed = array('jpeg', 'jpg', 'png', 'JPG');
// if extension is allowed
if(in_array($fileActualExt, $allowed)){
// check if any error
if($fileError === 0){
// Creating a unique file name
$fileNew = $newfilename. "." . uniqid('', true) . "." . $fileActualExt;
$fileDest = "assets/images/gallery/" . $fileNew;
// Function to upload file
move_uploaded_file($fileTmpName, $fileDest);
// Making a database connection
include_once ('dbh.php');
}
}
在上面的场景中它甚至没有进入 if 条件。当我删除 if 条件时，我得到“找不到文件”。现在有点被难住了，因为我过去让它工作过。我什至尝试过像这样的基本 HTML 查询格式，mysqli_query($conn, $sql) or die(mysqli_error($conn));但这也不起作用。
qq_遁去的一_11回答
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至尊宝的传说
您的表单标签必须启用enctype="multipart/form-data"。试试这段代码。<!DOCTYPE html><html><body><form action="upload.php" method="post" enctype="multipart/form-data"> Select image to upload: <input type="file" name="fileToUpload" id="fileToUpload"> <input type="submit" value="Upload Image" name="submit"></form></body></html><?php$target_dir = "uploads/";$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);$uploadOk = 1;$imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));// Check if image file is a actual image or fake imageif(isset($_POST["submit"])) { // Check if file already exists if (file_exists($target_file)) { echo "Sorry, file already exists."; $uploadOk = 0; } // Check file size if ($_FILES["fileToUpload"]["size"] > 500000) { echo "Sorry, your file is too large."; $uploadOk = 0; } // Allow certain file formats if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg" && $imageFileType != "gif" ) { echo "Sorry, 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)) { echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded."; } else { echo "Sorry, there was an error uploading your file."; } }}?>
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