- parse_str: documentation ( source)
- parse_url: documentation ( source)
<?php
$str = "http://www.domain.com/map.aspx?isTrafficAlert=true&lat=51.529900&lon=-0.785384";
parse_str(parse_url($str, PHP_URL_QUERY), $latlon);
echo "lat => ".$latlon['lat']."\n";
echo "lon => ".$latlon['lon'];