Относительный Uri в Абсолютные

[lazutov]

function u2a($link, $base)
{
if (!preg_match('~^(http://[^/?#]+)?([^?#]*)?(\?[^#]*)?(#.*)?$~i', $link.'#', $matchesLink)) { 
return false;
}	
if (!empty($matchesLink[1])) {
return $link;
}
if (!preg_match('~^(http://)?([^/?#]+)(/[^?#]*)?(\?[^#]*)?(#.*)?$~i', $base.'#', $matchesBase)) {
return false;
}
if (empty($matchesLink[2])) {
if (empty($matchesLink[3])) {
return 'http://'.$matchesBase[2].$matchesBase[3].$matchesBase[4];;
}
return 'http://'.$matchesBase[2].$matchesBase[3].$matchesLink[3];
}
$pathLink = explode('/', $matchesLink[2]);
if ($pathLink[0] == '') {
return 'http://'.$matchesBase[2].$matchesLink[2].$matchesLink[3];
}
$pathBase = explode('/', preg_replace('~^/~', '', $matchesBase[3]));
if (sizeOf($pathBase) > 0) {
array_pop($pathBase);
}
foreach ($pathLink as $p) {
if ($p == '.') {
continue;
} elseif ($p == '..') {
if (sizeOf($pathBase) > 0) {
array_pop($pathBase);				
}
} else {
array_push($pathBase, $p);			
}
}	
return 'http://'.$matchesBase[2].'/'.implode('/', $pathBase).$matchesLink[3];	
}