< ?php
/**
* 打印机打印效果
* @ param $text String 需要打印的文字
* @ param $color color|#16进制颜色 
* @ param $fontsize int 字体大小
**/
 
function gif_print($text,$color='red',$fontsize = 40)
{
    $ani = new Imagick();
    $ani->setFormat('gif');
    $textcolor = new ImagickPixel($color);
    $bgcolor = new ImagickPixel('white');
 
    //定义画笔
    $draw = new ImagickDraw();
    $draw->setFontSize($fontsize);
    $draw->setFillColor($textcolor);
    $draw->setGravity(imagick::GRAVITY_WEST);
 
    //获取画笔写字的属性
    $fontprop = $ani->queryFontMetrics($draw,$text);
    $width = (int)$fontprop['textWidth'] + 8;
    $height = (int)$fontprop['textHeight']  ;
 
    //创建打印机的待机效果
 
    $ani->newImage($width,$height,$bgcolor);
    $draw->line(3,8,3,$height);
    $ani->drawimage($draw);
    $ani->setImageDelay(30);
    $ani->newImage($width,$height,$bgcolor);
    $ani->setImageDelay(30);
    $ani->newImage($width,$height,$bgcolor);
 
    $ani->drawimage($draw);
    $ani->setImageDelay(30);
 
    $textstrlen = strlen($text);
 
    //创建打印机打印效果
    for($i = 0;$i < = $textstrlen;$i++)
    {
        $single = substr($text,0,$i);
        $ani->newImage($width,$height,$bgcolor);
        $ani->setGravity(imagick::GRAVITY_WEST);
        $ani->annotateImage($draw,0,0,0,$single);
        $ani->setImageDelay(20);
    }
 
    header("Content-Type:image/gif");
    echo $ani->getImagesBlob();
}
gif_print('Welcome to Paitoubing.cn','blue',30);