$imgs = array();

$imgs[0] = '1.jpg';

$imgs[1] = '2.jpg';

$imgs[2] = '3.jpg';

$imgs[3] = '4.jpg';

$target = 'emp.jpg';//背景图片

$target_img = Imagecreatefromjpeg($target);

$source= array();

foreach ($imgs as $k=>$v){

$source[$k]['source'] = Imagecreatefromjpeg($v);

$source[$k]['size'] = getimagesize($v);

}

//imagecopy ($target_img,$source[0]['source'],2,2,0,0,$source[0]['size'][0],$source[0]['size'][1]);

//imagecopy ($target_img,$source[1]['source'],250,2,0,0,$source[1]['size'][0],$source[1]['size'][1]);

$num1=0;

$num=3; //控制列数，一行几列，0为1以此类推。

$tmp=2;

$tmpy=2; //图片之间的间距

for ($i=0; $i<4; $i ){

imagecopy($target_img,$source[$i]['source'],$tmp,$tmpy,0,0,$source[$i]['size'][0],$source[$i]['size'][1]);

$tmp = $tmp $source[$i]['size'][0];

$tmp = $tmp 5;

if($i==$num){

$tmpy = $tmpy $source[$i]['size'][1];

$tmpy = $tmpy 5;

$tmp=2;

$num=$num 3;

}

}

Imagejpeg($target_img,'pin.jpg');

?>