bitwiser/exercise1.php

## exercise1.php
<?php

//Excersice 1

function getextension($file){
	$path = pathinfo($file);
	return $path['extension'];
}

$music = "";

if($handle = opendir('songs/')){
	while(false !== ($entry = readdir($handle))){
		if(getextension($entry)=='mp3'){
			$music .= '<li class="mp3item">'.$entry.'</li>';
		}
	}
}
closedir($handle);

?>
<!DOCTYPE html>
<html>
<head>
	<title></title>
</head>
<body>
<ul>
	<?php echo $music;?>
</ul>
</body>
</html>

## exercise2.php
<?php

//Excersice 2

function getextension($file){
	$path = pathinfo($file);
	return $path['extension'];
}

$music = "";
$playlist = "";

if($handle = opendir('songs/')){
	while(false !== ($entry = readdir($handle))){
		$ext = getextension($entry);
		if($ext=='mp3'){
			$music .= '<li class="mp3item">'.$entry.'</li>';
		}else if($ext=='txt'){
			$playlist .= '<li class="playlistitem">'.$entry.'</li>';
		}
	}
}
closedir($handle);

?>
<!DOCTYPE html>
<html>
<head>
	<title></title>
</head>
<body>
<ul>
	<?php echo $music;?>
	<?php echo $playlist;?>
</ul>
</body>
</html>

## exercise4.php
<?php

//Excersice 4

function getFileSize($dir,$file){
 $c = 1024;
 $size = filesize($dir.$file);
 if($size<1024){
  $size = $size." b";
 }else if($size<=1048575){
  $size = ($size/$c);
  $size = sprintf("%.2f kb",$size);
 }else{
  $size = $size/($c*$c);
  $size = sprintf("%.2f mb",$size);
 }
 return $size;
}

function getextension($file){
	$path = pathinfo($file);
	return $path['extension'];
}

$music = "";
$playlist = "";

if($handle = opendir('songs/')){
	while(false !== ($entry = readdir($handle))){
		$ext = getextension($entry);
		if($ext=='mp3'){
			$music .= '<li class="mp3item">'.$entry.' ('.getFileSize('songs/',$entry).')</li>';
		}else if($ext=='txt'){
			$playlist .= '<li class="playlistitem">'.$entry.'</li>';
		}
	}
}
closedir($handle);

?>
<!DOCTYPE html>
<html>
<head>
	<title></title>
</head>
<body>
<ul>
	<?php echo $music;?>
	<?php echo $playlist;?>
</ul>
</body>
</html>
	<?php

	//Excersice 1

	function getextension($file){
	$path = pathinfo($file);
	return $path['extension'];
	}

	$music = "";

	if($handle = opendir('songs/')){
	while(false !== ($entry = readdir($handle))){
	if(getextension($entry)=='mp3'){
	$music .= '<li class="mp3item">'.$entry.'</li>';
	}
	}
	}
	closedir($handle);

	?>
	<!DOCTYPE html>
	<html>
	<head>
	<title></title>
	</head>
	<body>
	<ul>
	<?php echo $music;?>
	</ul>
	</body>
	</html>
	<?php

	//Excersice 2

	function getextension($file){
	$path = pathinfo($file);
	return $path['extension'];
	}

	$music = "";
	$playlist = "";

	if($handle = opendir('songs/')){
	while(false !== ($entry = readdir($handle))){
	$ext = getextension($entry);
	if($ext=='mp3'){
	$music .= '<li class="mp3item">'.$entry.'</li>';
	}else if($ext=='txt'){
	$playlist .= '<li class="playlistitem">'.$entry.'</li>';
	}
	}
	}
	closedir($handle);

	?>
	<!DOCTYPE html>
	<html>
	<head>
	<title></title>
	</head>
	<body>
	<ul>
	<?php echo $music;?>
	<?php echo $playlist;?>
	</ul>
	</body>
	</html>
	<?php

	//Excersice 4

	function getFileSize($dir,$file){
	$c = 1024;
	$size = filesize($dir.$file);
	if($size<1024){
	$size = $size." b";
	}else if($size<=1048575){
	$size = ($size/$c);
	$size = sprintf("%.2f kb",$size);
	}else{
	$size = $size/($c*$c);
	$size = sprintf("%.2f mb",$size);
	}
	return $size;
	}

	function getextension($file){
	$path = pathinfo($file);
	return $path['extension'];
	}

	$music = "";
	$playlist = "";

	if($handle = opendir('songs/')){
	while(false !== ($entry = readdir($handle))){
	$ext = getextension($entry);
	if($ext=='mp3'){
	$music .= '<li class="mp3item">'.$entry.' ('.getFileSize('songs/',$entry).')</li>';
	}else if($ext=='txt'){
	$playlist .= '<li class="playlistitem">'.$entry.'</li>';
	}
	}
	}
	closedir($handle);

	?>
	<!DOCTYPE html>
	<html>
	<head>
	<title></title>
	</head>
	<body>
	<ul>
	<?php echo $music;?>
	<?php echo $playlist;?>
	</ul>
	</body>
	</html>