giuliomoro@15: <?php
giuliomoro@15: 
giuliomoro@15: //http://stackoverflow.com/questions/4444475/transfrom-relative-path-into-absolute-url-using-php
giuliomoro@15: function rel2abs($rel, $base)
giuliomoro@15: {
giuliomoro@15:     /* return if already absolute URL */
giuliomoro@15:     if (parse_url($rel, PHP_URL_SCHEME) != '' || substr($rel, 0, 2) == '//') return $rel;
giuliomoro@15: 
giuliomoro@15:     /* queries and anchors */
giuliomoro@15:     if ($rel[0]=='#' || $rel[0]=='?') return $base.$rel;
giuliomoro@15: 
giuliomoro@15:     /* parse base URL and convert to local variables:
giuliomoro@15:      $scheme, $host, $path */
giuliomoro@15:     extract(parse_url($base));
giuliomoro@15: 
giuliomoro@15:     /* remove non-directory element from path */
giuliomoro@15:     $path = preg_replace('#/[^/]*$#', '', $path);
giuliomoro@15: 
giuliomoro@15:     /* destroy path if relative url points to root */
giuliomoro@15:     if ($rel[0] == '/') $path = '';
giuliomoro@15: 
giuliomoro@15:     /* dirty absolute URL */
giuliomoro@15:     $abs = "$host$path/$rel";
giuliomoro@15: 
giuliomoro@15:     /* replace '//' or '/./' or '/foo/../' with '/' */
giuliomoro@15:     $re = array('#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#');
giuliomoro@15:     for($n=1; $n>0; $abs=preg_replace($re, '/', $abs, -1, $n)) {}
giuliomoro@15: 
giuliomoro@15:     /* absolute URL is ready! */
giuliomoro@15:     return $scheme.'://'.$abs;
giuliomoro@15: }
giuliomoro@15: ?>