src/View/Helper/HtmlElementTrait.php
public function removeClass($class)
    {
        $index = array_search((string) $class, $this->class);
        if ($index !== false) {
            unset($this->class[$index]);
        }
        return $this;
    }
public function removeClass($class)
    {
        $index = array_search((string) $class, $this->class);
        if ($index !== false) {
            unset($this->class[$index]);
        }
        return $this;
    }
public function removeClass ( $ class ) { $ index = array_search ( ( string ) $ class , $ this -> class ) ; if ( $ index !== false ) { unset ( $ this -> class [ $ index ] ) ; } return $ this ; }
Remove a class from this element

@param  string $class
@return self
Remove a class from this element