majiameng / QrCode-php

src/Gateways/qrcode/QRimage.php

<?php
/*
* PHP QR Code encoder
*
* Image output of code using GD2
*
* PHP QR Code is distributed under LGPL 3
* Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
namespace tinymeng\code\Gateways\qrcode;

define('QR_IMAGE', true);

class QRimage {

    //----------------------------------------------------------------------
    public static function png($frame, $filename = false, $pixelPerPoint = 4, $outerFrame = 4,$saveandprint=FALSE)
    {
        $image = self::image($frame, $pixelPerPoint, $outerFrame);

        if ($filename === false) {
            Header("Content-type: image/png");
            ImagePng($image);
        } else {
            if($saveandprint===TRUE){
                ImagePng($image, $filename);
                header("Content-type: image/png");
                ImagePng($image);
            }else{
                ImagePng($image, $filename);
            }
        }

        ImageDestroy($image);
    }

    //----------------------------------------------------------------------
    public static function jpg($frame, $filename = false, $pixelPerPoint = 8, $outerFrame = 4, $q = 85)
    {
        $image = self::image($frame, $pixelPerPoint, $outerFrame);

        if ($filename === false) {
            Header("Content-type: image/jpeg");
            ImageJpeg($image, null, $q);
        } else {
            ImageJpeg($image, $filename, $q);
        }

        ImageDestroy($image);
    }

    //----------------------------------------------------------------------
    private static function image($frame, $pixelPerPoint = 4, $outerFrame = 4)
    {
        $h = count($frame);
        $w = strlen($frame[0]);

        $imgW = $w + 2*$outerFrame;
        $imgH = $h + 2*$outerFrame;

        $base_image =ImageCreate($imgW, $imgH);

        $col[0] = ImageColorAllocate($base_image,255,255,255);

$col was never initialized. Although not strictly required by PHP, it is generally a good practice to add $col = array(); before regardless.

        $col[1] = ImageColorAllocate($base_image,0,0,0);

        imagefill($base_image, 0, 0, $col[0]);

        for($y=0; $y<$h; $y++) {
            for($x=0; $x<$w; $x++) {
                if ($frame[$y][$x] == '1') {
                    ImageSetPixel($base_image,$x+$outerFrame,$y+$outerFrame,$col[1]);
                }
            }
        }

        $target_image =ImageCreate($imgW * $pixelPerPoint, $imgH * $pixelPerPoint);
        ImageCopyResized($target_image, $base_image, 0, 0, 0, 0, $imgW * $pixelPerPoint, $imgH * $pixelPerPoint, $imgW, $imgH);
        ImageDestroy($base_image);

        return $target_image;
    }
}