08c12-1.php

介绍PHP5的给类型函数应用

<?php
// Store a copy of our current file, making sure it uses forward slashes:
$curdir = str_replace('\\', '/', __FILE__);
// Store a copy of document root, ensuring forward slashes:
$root = str_replace('\\', '/', $_SERVER['DOCUMENT_ROOT']);

// As long as we haven't just done Document Root:
while ($root !== $curdir) {
	// Remove one directory level from the current directory
	$curdir = dirname($curdir);

	// Try to include the file, hide any error:
	@include("{$curdir}/header.php");	
}
?>