public function or_where( $column, $equality = '', $value = '', Closure $callback = null ) {
		return $this->where( $column, $equality, $value, $callback, 'or' );
	}
public function or_where( $column, $equality = '', $value = '', Closure $callback = null ) {
		return $this->where( $column, $equality, $value, $callback, 'or' );
	}
public function or_where ( $ column , $ equality = '' , $ value = '' , Closure $ callback = null ) { return $ this -> where ( $ column , $ equality , $ value , $ callback , 'or' ) ; }
Add a OR where clause.

@since 2.0

@param string       $column
@param string|bool  $equality
@param mixed        $value
@param Closure|null $callback Called with $this as the first parameter. Setup for nesting on the new where tag.

@return $this
Add a OR where clause .