public function start($name, $mode = ViewBlock::OVERRIDE)
    {
        if (array_key_exists($name, $this->_active)) {
            throw new Exception(sprintf("A view block with the name '%s' is already/still open.", $name));
        }
        $this->_active[$name] = $mode;
        ob_start();
    }
public function start($name, $mode = ViewBlock::OVERRIDE)
    {
        if (array_key_exists($name, $this->_active)) {
            throw new Exception(sprintf("A view block with the name '%s' is already/still open.", $name));
        }
        $this->_active[$name] = $mode;
        ob_start();
    }
public function start ( $ name , $ mode = ViewBlock :: OVERRIDE ) { if ( array_key_exists ( $ name , $ this -> _active ) ) { throw new Exception ( sprintf ( "A view block with the name '%s' is already/still open." , $ name ) ) ; } $ this -> _active [ $ name ] = $ mode ; ob_start ( ) ; }
Start capturing output for a 'block'

Blocks allow you to create slots or blocks of dynamic content in the layout.
view files can implement some or all of a layout's slots.

You can end capturing blocks using View::end(). Blocks can be output
using View::get();

@param string $name The name of the block to capture for.
@param string $mode If ViewBlock::OVERRIDE existing content will be overridden by new content.
If ViewBlock::APPEND content will be appended to existing content.
If ViewBlock::PREPEND it will be prepended.
@throws \Cake\Core\Exception\Exception When starting a block twice
@return void
Start capturing output for a block