upload image file in php

album.php

<?php 
	$page = $_SERVER['PHP_SELF'];

	$column = 5;
	$base = "data";
	$thumbs = "thumbs";

	$get_album = $_GET['album'];

	if (!$get_album) {
		echo "<b>Select an album: </b><p />";
		$handle = opendir($base);
		while (($file = readdir($handle)) !== FALSE) {
			if (is_dir($base."/".$file) && $file != "." && $file != "..") {
				echo "<a href='$page?album=$file'>$file</a>"."<br>";
			}
		}
	}
	else{
		if (!is_dir($base."/".$get_album)) {
			echo "album doesnt exist.";
		}else{
			echo "<b>$get_album</b><p />";
			$handle = opendir($base."/".$get_album);
			while (($file = readdir($handle)) !== FALSE) {
				if ($file != "." && $file != "..") {	
					echo "<img src='$base/$get_album/$file'><br>";
				}
			}
		}
	}
 ?>

multipleUpload.php

<?php 
if (isset($_FILES['upload']) === true) {
	$file = $_FILES['upload'];

	for ($i = 0; $i < count($file['name']) ; $i++) { 
		$file_name     = $file['name'][$i];
		$file_tmp      = $file['tmp_name'][$i];

		move_uploaded_file($file_tmp, 'images/'.$file_name);
	}
}
?>

<form action="" method="POST" enctype="multipart/form-data">
	<p>
		<input type="file" name="upload[]" multiple />
		<input type="submit" value="Upload"/>
	</p>
</form>

upload.php

<?php 
if (isset($_FILES['image'])) {
	$errors = array();
	$allowed_ext = array('jpg','jpeg','png','gif');

	$file_name = $_FILES['image']['name'];
	$file_ext  = strtolower(end(explode(".", $file_name)));
	$file_size = $_FILES['image']['size'];
	$file_tmp  = $_FILES['image']['tmp_name'];

	if (in_array($file_ext, $allowed_ext) === false ) {
		$errors[] = 'Extenstion not allowed';
	}
	if ($file_size > 2097152) {
		$errors[] = 'File size must be under 2mb';
	}
	if (empty($errors)) {
		if(move_uploaded_file($file_tmp, 'images/'.$file_name)){
			echo "File Uploaded";
		}
	}else{
		foreach ($errors as $error) {
			echo $error , '<br>';
		}
	}
}
?>

<form action="" method="POST" enctype="multipart/form-data">
	<p>
		<input type="file" name="image" />
		<input type="submit" value="Upload"/>
	</p>
</form>