PHP add watermark to picture three

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function setmasktxtpct ($n)
{
$this->mask_txt_pct = (int) $n;
}

/**
* Set thumbnail border
*
* @param (type) (parameter name) (description)
*/
function Setdstimgborder ($size =1, $color = "#000000")
{
$this->img_border_size = (int) $size;
$this->img_border_color = $color;
}

/**
* Flip Horizontally
*/
function Fliph ()
{
$this->_flip_x++;
}

/**
* Flip Vertically
*/
function FLIPV ()
{
$this->_flip_y++;
}

/**
* Set the Cut type
*
* @param (type) (parameter name) (description)
*/
function Setcuttype ($type)
{
$this->cut_type = (int) $type;
}

/**
* Set Picture Cut
*
* @param integer $width rectangular Shearing
*/
function Setrectanglecut ($width, $height)
{
$this->fill_w = (int) $width;
$this->fill_h = (int) $height;
}

/**
* Set the source diagram to cut the starting coordinate point
*
* @param (type) (parameter name) (description)
*/
function Setsrccutposition ($x, $y)
{
$this->src_x = (int) $x;
$this->src_y = (int) $y;
}

/**
* Create picture, main function
* @param integer $a this parameter is used as a percentage when the second parameter is missing.
* Otherwise as width value
* @param integer $b The height of the picture after scaling
*/
function createimg ($a, $b =null)
{
$num = Func_num_args ();
if (1 = $num)
{
$r = (int) $a;
if ($r < 1)
{
Die ("Picture scaling must not be less than 1");
}
$this->img_scale = $r;
$this->_setnewimgsize ($R);
}

if (2 = $num)
{
$w = (int) $a;
$h = (int) $b;
if (0 = $w)
{
Die ("target width cannot be 0");
}
if (0 = $h)
{
Die ("target height cannot be 0");
}
$this->_setnewimgsize ($w, $h);
}

if ($this->_flip_x%2!=0)
{
$this->_fliph ($this->h_src);
}

if ($this->_flip_y%2!=0)
{
$this-&GT;_FLIPV ($this->h_src);
}
$this->_createmask ();
$this->_output ();

Release
if (Imagedestroy ($this->h_src) && Imagedestroy ($this->h_dst))
{
return true;
}
Else
{
return false;
}
}

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