如何在php文件上传中更改文件名
如何在php文件上传中更改文件名
提问于 2016-10-11 18:55:41
现在我正在学习如何使用PHP上传照片。我从w3schools.com复制了一个代码，但我猜不出我应该在哪里更改照片的名称。这段代码上传的照片具有它以前的名称，但我想更改它，以便我应该在哪里写入它？
<?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.";
}
}
?>
回答 3
Stack Overflow用户
发布于 2016-10-11 18:58:03
您可以在以下行中更改文件名：
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);做一些事情，比如
$target_file = $target_dir . "heyyyyy." . $imageFileType;Stack Overflow用户
发布于 2018-06-22 03:37:41
为确保扩展名为小写，请替换：
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);通过以下方式：
$imageFileType = strtolower(pathinfo($original_file,PATHINFO_EXTENSION));Stack Overflow用户
发布于 2019-04-21 21:04:50
<form action="" method="POST" enctype="multipart/form-data">
<input type="file" name="fileToUpload" />
<button type="submit">Upload</button>
</form>这是要上传的文件：name="fileToUpload"。这应该可以解决这个问题。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/39975706
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