code: public static function addSemiColons($content, $caller)
      {
          $validComments = call_user_func(array($caller, 'getValidComments'));
          $validSubst = call_user_func(array($caller, 'getValidStringSurrogates'));
          $validHtml = call_user_func(array($caller, 'getHtmlCodes'));
          $beforeSemiColon = '('.$validSubst.'|\+\+|--|[a-zA-Z0-9_\x7f-\xff]!|[a-zA-Z0-9_\x7f-\xff]~|!!|[a-zA-Z0-9_\x7f-\xff\)\]])(?<!<\?php|<\?)';
  
          return array(
              '#'.$beforeSemiColon.'(\s*(?:'.$validComments.'\s*)*[\n\r]+\s*(?:'.$validComments.'\s*)*)(?=[a-zA-Z0-9_\x7f-\xff\$\}]|$)#U' => '$1;$2',
  
              '#'.$beforeSemiColon.'(\s*(?:'.$validComments.'\s*)*)$#U' => '$1;$2',
  
              '#'.$beforeSemiColon.'(\s*(?:'.$validComments.'\s*)*\?>)$#U' => '$1;$2',
  
              '#'.$beforeSemiColon.'(\s*(?:'.$validComments.'\s*)*'.$validHtml.')$#U' => '$1;$2',
  
              '#('.$validSubst.'|\+\+|--|[a-zA-Z0-9_\x7f-\xff]!|[a-zA-Z0-9_\x7f-\xff]~|!!|\]|\))(\s*\n\s*\()#U' => '$1;$2',
          );
      }
docs: ***************************