php文件上传。

<?php
if ((($_FILES["file"]["type"]=="image/ipeg")
    || ($_FILES["file"]["type"]=="image/gif")
	|| ($_FILES["file"]["type"]=="image/pjpeg"))
	&& ($_FILES["file"]["size"]<=10000000)) {
	if (($_FILES["file"]["error"])>0) {
		echo  "Error: ".$_FILES["file"]["error"]."<br />";
	}
	else {
		echo "Upload: ".$_FILES["file"]["name"]."<br />";
		echo "Type: ".$_FILES["file"]["type"]."<br />";
		echo "Size: ".($_FILES["file"]["size"]/1024)." kb<br />";
		echo "Temp file: ".$_FILES["file"]["tmp_name"]."<br />";
		if (file_exists("upload/".$_FILES["file"]["name"])) {
			echo $_FILES["file"]["name"]." already exists.";
		}
		else {
			// move_uploaded_file uploads the file to the server
			move_uploaded_file($_FILES["file"]["tmp_name"],"upload/".$_FILES["file"]["name"]);
			echo "Store in: "."upload/".$_FILES["file"]["name"];
		}
	}

}
else {
	echo "Invalid error!"."<br />";
} 
?>