PHP indexing

PHP index source code:

<html><head>
<title>Software index</title>
<link type="text/css" rel="stylesheet" href="style.css">
</head>
<body bgcolor="white">
<?php

function output_array($myarray) {
	$beforename="<span class=\"displayme\">";
	$aftername="</span>";
	for($i=0; $i<sizeof($myarray); $i++) {
		echo "$beforename ";
		echo "$myarray[$i] <a href=\"$myarray[$i]\"> [visit]</a>";
		echo " $aftername\n";
		$dirname="/".$myarray[$i]."/";
		print_file('README',$dirname);
	}
}

echo "<center>";
echo "<span class=\"displayme\">Software index</span>\n";
echo "</center>";

$foo=list_dir('.');
sort($foo);
output_array($foo);

?>
</body></html>