src/thinkextend/image/driver/Gif.php
public function GIFAddHeader()
    {

        if (ord($this->BUF[0]{10}) & 0x80) {
            $cmap = 3 * (2 << (ord($this->BUF[0]{10}) & 0x07));

            $this->GIF .= substr($this->BUF[0], 6, 7);
            $this->GIF .= substr($this->BUF[0], 13, $cmap);
            $this->GIF .= "!\377\13NETSCAPE2.0\3\1" . self::GIFWord($this->LOP) . "\0";
        }
    }
public function GIFAddHeader()
    {

        if (ord($this->BUF[0]{10}) & 0x80) {
            $cmap = 3 * (2 << (ord($this->BUF[0]{10}) & 0x07));

            $this->GIF .= substr($this->BUF[0], 6, 7);
            $this->GIF .= substr($this->BUF[0], 13, $cmap);
            $this->GIF .= "!\377\13NETSCAPE2.0\3\1" . self::GIFWord($this->LOP) . "\0";
        }
    }
/*
:::::::::::::::::::::::::::::::::::::::::::::::::::
::
::    GIFAddHeader...
::