<?php
if (isset ($_POST['uploadButton']))
{
//echo 'ddddd';
echo imagecreatefromjpeg($_FILES['file_upload']['name']);
print_r(getimagesize($_FILES['file_upload']['name']));
print_r($_FILES['file_upload']);
}
?>
<form action="1.php" method="post" enctype="multipart/form-data">
<input type="file" name="file_upload">
<input type="submit" value="upload" name="uploadButton">
</form>
目的:图片没有保存到指定的文件夹之前,能够获取图片的尺寸