Home >Backend Development >PHP Tutorial >How to safely upload images in PHP, _PHP tutorial
How to safely upload images in PHP, _PHP tutorial
- WBOYOriginal
- 2016-07-13 10:02:03968browse
How to upload images safely with PHP,
This article describes the method of uploading images safely with PHP. Share it with everyone for your reference. The specific analysis is as follows:
This code is used to upload images. It can detect whether the image is safe based on the image type, not simply detecting the extension
<?php // upload.php
echo <<<_END
<html><head><title>PHP Form Upload</title></head><body>
<form method='post' action='upload2.php' enctype='multipart/form-data'>
Select a JPG, GIF, PNG or TIF File:
<input type='file' name='filename' size='10' />
<input type='submit' value='Upload' /></form>
_END;
if ($_FILES)
{
$name = $_FILES['filename']['name'];
switch($_FILES['filename']['type'])
{
case 'image/jpeg': $ext = 'jpg'; break;
case 'image/gif': $ext = 'gif'; break;
case 'image/png': $ext = 'png'; break;
case 'image/tiff': $ext = 'tif'; break;
default: $ext = ''; break;
}
if ($ext)
{
$n = "image.$ext";
move_uploaded_file($_FILES['filename']['tmp_name'], $n);
echo "Uploaded image '$name' as '$n':<br />";
echo "<img src='$n' />";
}
else echo "'$name' is not an accepted image file";
}
else echo "No image has been uploaded";
echo "</body></html>";
?>
I hope this article will be helpful to everyone’s PHP programming design.
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：How to add spaces to each paragraph in php, add spaces to paragraphs in php_PHP tutorialNext article：How to add spaces to each paragraph in php, add spaces to paragraphs in php_PHP tutorial