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| Not my code, but a handy function which takes an absolute URL and a relative URL and combines the two to make a new absolute path.
The function has been modified to ignore an absolute URL passed as relative ( basically anything that includes a schema ). |
<?php
$url = "http://www.goat.com/money/dave.html";
$rel = "../images/cheese.jpg";
$com = InternetCombineURL($url,$rel);
// Returns http://www.goat.com/images/cheese.jpg
function InternetCombineUrl($absolute, $relative) {
$p = parse_url($relative);
if($p["scheme"])return $relative;
extract(parse_url($absolute));
$path = dirname($path);
if($relative{0} == '/') {
$cparts = array_filter(explode("/", $relative));
}
else {
$aparts = array_filter(explode("/", $path));
$rparts = array_filter(explode("/", $relative));
$cparts = array_merge($aparts, $rparts);
foreach($cparts as $i => $part) {
if($part == '.') {
$cparts[$i] = null;
}
if($part == '..') {
$cparts[$i - 1] = null;
$cparts[$i] = null;
}
}
$cparts = array_filter($cparts);
}
$path = implode("/", $cparts);
$url = "";
if($scheme) {
$url = "$scheme://";
}
if($user) {
$url .= "$user";
if($pass) {
$url .= ":$pass";
}
$url .= "@";
}
if($host) {
$url .= "$host/";
}
$url .= $path;
return $url;
}
?>
|
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