regex to eliminate port number from url

Technically, this is a valid URL:
http://username:[email protected]=:40#:yes

So you are better off parsing it with PHP's parse_url function:

PHP Code:

<?php

$url = 'http://username:[email protected]:8080/one/two/three?legal=:40#:yes';

$parsed_url = parse_url( $url );

echo '<pre>';
print_r( $parsed_url );
echo '</pre>';

function reassemble_without_port( $parsed_url )
{
    $url = '';

    if( isset( $parsed_url['scheme'] ) )
        $url .= $parsed_url['scheme'] . '://';

    if( isset( $parsed_url['user'], $parsed_url['pass'] ) )
        $url .= $parsed_url['user'] . ':' . $parsed_url['pass'] . '@';

    $url .= $parsed_url['host'];

    if( isset( $parsed_url['path'] ) )
        $url .= $parsed_url['path'];

    if( isset( $parsed_url['query'] ) )
        $url .= '?' . $parsed_url['query'];

    if( isset( $parsed_url['fragment'] ) )
        $url .= '#' . $parsed_url['fragment'];

    return $url;
}

echo reassemble_without_port( $parsed_url ); 


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