php利用gd实现图片的边框

 <?php

 //实现两张图片合并  并内图片有一定的边框

 $file = 'image/qr_1047.png';
 $logo = 'image/logo_1047.jpg';
 $code = 'image/ewr.png';

 $file_info = getimagesize( $file );
 $fileTmp = imagecreatefrompng( $file );

 thmbPic( $logo,$file_info[0]*0.26 );
 thmbPic( $logo,$file_info[0]*0.26+6,3 );

 $logo_tmp = imagecreatefromjpeg( $logo );
 $info_logo = getimagesize( $logo );
 $y =$file_info[0] *0.36;
 imagecopymerge($fileTmp, $logo_tmp, $y, $y, 0, 0, $info_logo[0], $info_logo[1],100);
 imagepng($fileTmp,$code);

  function thmbPic($img,$x=0,$y=0){
         //获取图片信息
         $info_logo = getimagesize( $img );
         //新建临时图片
         $img_tmp = imagecreatefromjpeg( $img );
         //新建真彩色图片
         $img_thm = imagecreatetruecolor($x,$x);
         $color = imagecolorallocate($img_thm,255,255,255);
         imagecolortransparent($img_thm,$color);
         imagefill($img_thm,0,0,$color);
         //压缩图片
         if( $y==0 ){
             imagecopyresampled($img_thm, $img_tmp, $y, $y, 0, 0, $x, $x, $info_logo[0], $info_logo[0]);
         }else{
             imagecopy($img_thm, $img_tmp, $y, $y, 0, 0, $info_logo[0], $info_logo[0]);
         }
         //保存图片
         imagejpeg($img_thm,$img);
         //销毁图片
         imagedestroy( $img_tmp );
         imagedestroy( $img_thm );
     }