Question

目前我正在研究如何使用PHP上传照片。我从w3schools.com复制了一个代码，但我不知道应该在哪里更改照片的名称。这段代码使用之前的名称上传照片，但我想更改它以便我应该将其写入？

＆＃13;

<?php
$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$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) {
        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" ) {
    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.";
    }
}
?>

＆＃13;

Answer 1

您可以在此行中更改文件名：

$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);

执行类似

的操作

$target_file = $target_dir . "heyyyyy." . $imageFileType;

Answer 2

为了确保扩展名是小写，请替换：

$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);

使用：

$imageFileType = strtolower(pathinfo($original_file,PATHINFO_EXTENSION));

Answer 3

    <form action="" method="POST" enctype="multipart/form-data">
    <input type="file" name="fileToUpload" />
    <button type="submit">Upload</button>
    </form>

以下是要上传的文件：name="fileToUpload"。这应该可以解决。

如何在php文件上传中更改文件名

3 个答案: