original_string: private function escape_column_name($column_names){
          $columns = [];
          foreach( explode(',', $column_names) as $column_name ){
              // trim
              $column_name = trim($column_name);
              // Remove special chars
              $columns[] = preg_replace('/[`\'";\n\r\\\\\\0]/u', '', $column_name);
          }
          return implode(', ', $columns);
      }
code: private function escape_column_name($column_names){
          $columns = [];
          foreach( explode(',', $column_names) as $column_name ){
              // trim
              $column_name = trim($column_name);
              // Remove special chars
              $columns[] = preg_replace('/[`\'";\n\r\\\\\\0]/u', '', $column_name);
          }
          return implode(', ', $columns);
      }
code_tokens: private function escape_column_name ( $ column_names ) { $ columns = [ ] ; foreach ( explode ( ',' , $ column_names ) as $ column_name ) { // trim $ column_name = trim ( $ column_name ) ; // Remove special chars $ columns [ ] = preg_replace ( '/[`\'";\n\r\\\\\\0]/u' , '' , $ column_name ) ; } return implode ( ', ' , $ columns ) ; }
docstring: Wrap table name with backtick
  
  @param string $column_names
  @return string
docstring_tokens: Wrap table name with backtick