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    MediaWiki/valid user

    < MediaWiki(Redirected from Mediawiki/valid user)

    <HighlightSyntax> /**

            * Is the input a valid username?
            *
            * Checks if the input is a valid username, we don't want an empty string,
            * an IP address, anything that containins slashes (would mess up subpages),
            * is longer than the maximum allowed username size or doesn't begin with
            * a capital letter.
            *
            * @param string $name
            * @return bool
            * @static
            */
           static function isValidUserName( $name ) {
                   global $wgContLang, $wgMaxNameChars;
    
                   if ( $name == 
                   || User::isIP( $name )
                   || strpos( $name, '/' ) !== false
                   || strlen( $name ) > $wgMaxNameChars
                   || $name != $wgContLang->ucfirst( $name ) )
                           return false;
    
                   // Ensure that the name can't be misresolved as a different title,
                   // such as with extra namespace keys at the start.
                   $parsed = Title::newFromText( $name );
                   if( is_null( $parsed )
                           || $parsed->getNamespace()
                           || strcmp( $name, $parsed->getPrefixedText() ) )
                           return false;
    
                   // Check an additional blacklist of troublemaker characters.
                   // Should these be merged into the title char list?
                   $unicodeBlacklist = '/[' .
                           '\x{0080}-\x{009f}' . # iso-8859-1 control chars
                           '\x{00a0}' .          # non-breaking space
                           '\x{2000}-\x{200f}' . # various whitespace
                           '\x{2028}-\x{202f}' . # breaks and control chars
                           '\x{3000}' .          # ideographic space
                           '\x{e000}-\x{f8ff}' . # private use
                           ']/u';
                   if( preg_match( $unicodeBlacklist, $name ) ) {
                           return false;
                   }
    
                   return true;
           }
    


    </HighlightSyntax>

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