无法从我的上传.php上传 txt，xls 文件

我已经创建了上传.php脚本。我可以上传图像，但无法上传 txt、xls 或视频文件。

我已经在我的脚本中添加了所需的代码，但仍然没有上传。下面是我的upload.php脚本

我已经添加了&& $imageFileType != "txt" && $imageFileType != "xls" )，仍然不允许。这是为什么呢？

<?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 image
if(isset($_POST["submit"])) {
    $check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
    if($check !== false) {
        echo "File is an image - " . $check["mime"] . ".";
        $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.";
    $uploadOk = 0;
}
// Check file size
if ($_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" && $imageFileType != "txt" && $imageFileType != "xls" ) {
    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.";
    }
}
?>

我的网页代码：

<!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>

您的代码工作正常。如果得到错误输出是因为 txt 文件没有 height 和width所以getimagesize()将返回FALSE .

像这样编辑代码：

<?php
    if( isset( $_POST[ "submit" ] ) ) {
        $target_dir = "upload/";
        $target_file = $target_dir . basename( $_FILES[ "fileToUpload" ][ "name" ] );
        $uploadOk = 1;
        $imageFileType = strtolower( pathinfo( $target_file, PATHINFO_EXTENSION ) );
        if( !in_array($imageFileType, ['jpg','png','jpeg','gif','txt','xls']) ) {
            // First check for supported file format
            echo "File format not supported.";
            $uploadOk = 0;
        } else{
            if( in_array($imageFileType, ['jpg','png','jpeg','gif']) ){
                // It coult be an image
                $check = getimagesize( $_FILES[ "fileToUpload" ][ "tmp_name" ] );
                if( $check !== false ) {
                    // Yes, definitely an image
                    echo "File is an image - " . $check[ "mime" ] . ".";
                    $uploadOk = 1;
                }
                else {
                    echo "File is not an image.";
                    $uploadOk = 0;
                }
            }
            if( $uploadOk != 0 && file_exists( $target_file ) ) {
                echo "Sorry, file already exists.";
                $uploadOk = 0;
            }
            if( $uploadOk != 0 && $_FILES[ "fileToUpload" ][ "size" ] > 500000 ) {
                echo "Sorry, your file is too large.";
                $uploadOk = 0;
            }
            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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