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//按照宽高缩放图片
public static function zoom($filename,$nw,$nh){ if(!file_exists(EXT.'qrcode/zoom/')){ mkdir(EXT.'qrcode/zoom/',0777,true); } $ing_path = $filename; $ext = getimagesize($filename); $src_img = null; list($width, $height) = getimagesize($filename); $new=imagecreatetruecolor($nw, $nh); switch ($ext['mime']) { case 'image/jpeg': $img = imagecreatefromjpeg($filename); $path = EXT.'qrcode/zoom/'.rand(0,100000).'.jpg'; imagecopyresized($new, $img,0, 0,0, 0,$nw, $nh, $width, $height); imagejpeg($new,$path,100); break; case 'image/png': $img = imagecreatefrompng($filename); $path = EXT.'qrcode/zoom/'.rand(0,100000).'.png'; imagecopyresized($new, $img,0, 0,0, 0,$nw, $nh, $width, $height); imagepng($new,$path,2); break; } if(file_exists($filename)) unlink($ing_path); return $path; }
//整成袁大头 public static function yuan_img($imgpath) { if(!file_exists(EXT.'qrcode/zoom/')){ mkdir(EXT.'qrcode/zoom/',0777,true); } $src_img = null; $src_img = imagecreatefromjpeg($imgpath); $wh = getimagesize($imgpath); $w = $wh[0]; $h = $wh[1]; $w = min($w, $h); $h = $w; $img = imagecreatetruecolor($w, $h); //这一句一定要有 imagesavealpha($img, true); //拾取一个完全透明的颜色,最后一个参数127为全透明 $bg = imagecolorallocatealpha($img, 255, 255, 255, 127); imagefill($img, 0, 0, $bg); $r = $w / 2; //圆半径 $y_x = $r; //圆心X坐标 $y_y = $r; //圆心Y坐标 for ($x = 0; $x < $w; $x++) { for ($y = 0; $y < $h; $y++) { $rgbColor = imagecolorat($src_img, $x, $y); if (((($x - $r) * ($x - $r) + ($y - $r) * ($y - $r)) < ($r * $r))) { imagesetpixel($img, $x, $y, $rgbColor); } } } $path = EXT.'qrcode/zoom/'.rand(0,100000).'.jpg'; imagejpeg($img,$path,100); imagedestroy($img); if(file_exists($imgpath)) unlink($imgpath); return $path; }
//合并图片 public static function exclusive_photo($back,$code){ if(!file_exists(EXT.'qrcode/qrcodepic/')){ mkdir(EXT.'qrcode/qrcodepic/',0777,true); } $code_path = $code; //获取水印图片的宽度和高度 list($c_w,$c_h) = getimagesize($code);//二维码 //创建背景图片的资源 $back = imagecreatefrompng($back);//背景图 //创建水印图片的资源 $code = imagecreatefromjpeg($code); $c_x = 177; $c_y = 581; //合并二维码 imagecopy($back, $code, $c_x, $c_y, 0, 0, $c_w, $c_h); //保存带有水印图片的背景图片 $outfile = EXT.'qrcode/qrcodepic/'.time().rand(0,9999).'.jpg'; imagejpeg($back,$outfile,100); //销毁资源 imagedestroy($back); imagedestroy($code); if(file_exists($code_path)) unlink($code_path); return $outfile; }