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- function add_query_arg() {
- $ret = '';
- if ( is_array( func_get_arg(0) ) ) {
- if ( @func_num_args() < 2 || false === @func_get_arg( 1 ) )
- if ( get_bloginfo('url') != '' )
- $uri = get_bloginfo('url') . $_SERVER['REQUEST_URI'];
- else
- $uri = $_SERVER['REQUEST_URI'];
- else
- $uri = @func_get_arg( 1 );
- } else {
- if ( @func_num_args() < 3 || false === @func_get_arg( 2 ) )
- if ( get_bloginfo('url') != '' )
- $uri = get_bloginfo('url') . $_SERVER['REQUEST_URI'];
- else
- $uri = $_SERVER['REQUEST_URI'];
- else
- $uri = @func_get_arg( 2 );
- }
- if ( $frag = strstr( $uri, '#' ) )
- $uri = substr( $uri, 0, -strlen( $frag ) );
- else
- $frag = '';
- if ( preg_match( '|^https?://|i', $uri, $matches ) ) {
- $protocol = $matches[0];
- $uri = substr( $uri, strlen( $protocol ) );
- } else {
- $protocol = '';
- }
- if ( strpos( $uri, '?' ) !== false ) {
- $parts = explode( '?', $uri, 2 );
- if ( 1 == count( $parts ) ) {
- $base = '?';
- $query = $parts[0];
- } else {
- $base = $parts[0] . '?';
- $query = $parts[1];
- }
- } elseif ( !empty( $protocol ) || strpos( $uri, '=' ) === false ) {
- $base = $uri . '?';
- $query = '';
- } else {
- $base = '';
- $query = $uri;
- }
- wp_parse_str( $query, $qs );
- $qs = urlencode_deep( $qs ); // this re-URL-encodes things that were already in the query string
- if ( is_array( func_get_arg( 0 ) ) ) {
- $kayvees = func_get_arg( 0 );
- $qs = array_merge( $qs, $kayvees );
- } else {
- $qs[func_get_arg( 0 )] = func_get_arg( 1 );
- }
- foreach ( (array) $qs as $k => $v ) {
- if ( $v === false )
- unset( $qs[$k] );
- }
- $homeurl = str_replace(( is_ssl() ? 'https://' : 'http://' ), '', get_bloginfo('url'));
- $ret = build_query( $qs );
- $ret = trim( $ret, '?' );
- $ret = preg_replace( '#=(&|$)#', '$1', $ret );
- $ret = $protocol . $base . $ret . $frag;
- $ret = rtrim( $ret, '?' );
- $ret = str_replace($_SERVER['HTTP_HOST'], $homeurl, $ret);
- return $ret;
- }
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