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{ //no-op else { return $base.$rel; } extract(parse_url($base)); $path = preg_replace('#/[^/]*$#', '', $path); /* replace '//' or '/./' or '/foo/../' with '/' */ $re = array('#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#'); for($n=1; $n>0; $abs=preg_replace($re, '/', $abs, -1, $n)) {} /* absolute URL is ready! */ } /* replace '//' or '/./' or '/foo/../' with '/' */ for($n=1; $n>0; $abs=preg_replace($re, '/', $abs, -1, $n.

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