php文件上传入门代码

star870126

php文件上传的入门代码。
<?php
/**
* php 文件上传
* by www.jbxue.com
*/
if(!empty($_FILES["uploadImage"])) {
// get file name
$filename = basename($_FILES['uploadImage']['name']);
// get extension
$ext = substr($filename, strrpos($filename, '.') + 1);
// check for jpg only
if ($ext == "jpg") {
// generate unique file name
$newName = 'images/'.time().'.'.$ext;
// upload files
if ((move_uploaded_file($_FILES['uploadImage']['tmp_name'], $newName))) {
// get height and width for image uploaded
list($width, $height) = getimagesize($newName);
// return json data
echo '{"image" : "'.$newName.'", "height" : "'.$height.'", "width" : "'.$width.'" }';
}
else {
echo '{"error" : "An error occurred while moving the files"}';
}
}
else {
echo '{"error" : "Invalid image format"}';
}
}
?>