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济南IT培训丨PHP基础课程PHP如何生成二维码

发布：济南IT培训
来源：互联网
时间：2018-02-26 14:28

    各位朋友大家好!
    今天给大家带来的基础教程是 PHP如何生成二维码!
    这里需要运用到一个PHP的二维码生成类库!
    由于源码比较长,需要的朋友可以评论或者私聊小编哦!
    下面就是类库的源码!
    <?php
    /*
    * PHP QR Code encoder
    *
    * This file contains MERGED version of PHP QR Code library.
    * It was auto-generated from full version for your convenience.
    *
    * This merged version was configured to not requre any external files,
    * with disabled cache, error loging and weker but faster mask matching.
    * If you need tune it up please use non-merged version.
    *
    * For full version, documentation, examples of use please visit:
    *
    * #/
    * #/projects/phpqrcode/
    *
    * 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
    */
    /*
    * Version: 1.1.4
    * Build: 2010100721
    */
    //---- qrconst.php -----------------------------
    /*
    * PHP QR Code encoder
    *
    * Common constants
    *
    * Based on libqrencode C library distributed under LGPL 2.1
    * Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@#>
    *
    * 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
    */
    // Encoding modes
    define('QR_MODE_NUL', -1);
    define('QR_MODE_NUM', 0);
    define('QR_MODE_AN', 1);
    define('QR_MODE_8', 2);
    define('QR_MODE_KANJI', 3);
    define('QR_MODE_STRUCTURE', 4);
    // Levels of error correction.
    define('QR_ECLEVEL_L', 0);
    define('QR_ECLEVEL_M', 1);
    define('QR_ECLEVEL_Q', 2);
    define('QR_ECLEVEL_H', 3);
    // Supported output formats
    define('QR_FORMAT_TEXT', 0);
    define('QR_FORMAT_PNG', 1);
    class qrstr {
    public static function set(&$srctab, $x, $y, $repl, $replLen = false) {
    $srctab[$y] = substr_replace($srctab[$y], ($replLen !== false)?substr($repl,0,$replLen):$repl, $x, ($replLen !== false)?$replLen:strlen($repl));
    }
    }
    //---- merged_config.php -----------------------------
    /*
    * PHP QR Code encoder
    *

* Config file, tuned-up for merged verion

济南IT培训

    */
    define('QR_CACHEABLE', false); // use cache - more disk reads but less CPU power, masks and format templates are stored there
    define('QR_CACHE_DIR', false); // used when QR_CACHEABLE === true
    define('QR_LOG_DIR', false); // default error logs dir
    define('QR_FIND_BEST_MASK', true); // if true, estimates best mask (spec. default, but extremally slow; set to false to significant performance boost but (propably) worst quality code
    define('QR_FIND_FROM_RANDOM', 2); // if false, checks all masks available, otherwise value tells count of masks need to be checked, mask id are got randomly
    define('QR_DEFAULT_MASK', 2); // when QR_FIND_BEST_MASK === false
    define('QR_PNG_MAXIMUM_SIZE', 1024); // maximum allowed png image width (in pixels), tune to make sure GD and PHP can handle such big images
    //---- qrtools.php -----------------------------
    /*
    * PHP QR Code encoder
    *
    * Toolset, handy and debug utilites.
    *
    * 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
    */
    class QRtools {
    //----------------------------------------------------------------------
    public static function binarize($frame)
    {
    $len = count($frame);
    foreach ($frame as &$frameLine) {
    for($i=0; $i<$len; $i++) {
    $frameLine[$i] = (ord($frameLine[$i])&1)?'1':'0';
    }
    }
    return $frame;
    }
    //----------------------------------------------------------------------
    public static function tcpdfBarcodeArray($code, $mode = 'QR,L', $tcPdfVersion = '4.5.037')
    {
    $barcode_array = array();
    if (!is_array($mode))
    $mode = explode(',', $mode);
    $eccLevel = 'L';
    if (count($mode) > 1) {
    $eccLevel = $mode[1];
    }
    $qrTab = QRcode::text($code, false, $eccLevel);
    $size = count($qrTab);
    $barcode_array['num_rows'] = $size;
    $barcode_array['num_cols'] = $size;
    $barcode_array['bcode'] = array();
    foreach ($qrTab as $line) {
    $arrAdd = array();
    foreach(str_split($line) as $char)
    $arrAdd[] = ($char=='1')?1:0;
    $barcode_array['bcode'][] = $arrAdd;
    }
    return $barcode_array;
    }
    //----------------------------------------------------------------------
    public static function clearCache()
    {
    self::$frames = array();
    }
    //----------------------------------------------------------------------
    public static function buildCache()
    {
    QRtools::markTime('before_build_cache');
    $mask = new QRmask();
    for ($a=1; $a <= QRSPEC_VERSION_MAX; $a++) {
    $frame = QRspec::newFrame($a);
    if (QR_IMAGE) {
    $fileName = QR_CACHE_DIR.'frame_'.$a.'.png';
    QRimage::png(self::binarize($frame), $fileName, 1, 0);
    }
    $width = count($frame);
    $bitMask = array_fill(0, $width, array_fill(0, $width, 0));
    for ($maskNo=0; $maskNo<8; $maskNo++)
    $mask->makeMaskNo($maskNo, $width, $frame, $bitMask, true);
    }
    QRtools::markTime('after_build_cache');
    }
    //----------------------------------------------------------------------
    public static function log($outfile, $err)
    {
    if (QR_LOG_DIR !== false) {
    if ($err != '') {
    if ($outfile !== false) {
    file_put_contents(QR_LOG_DIR.basename($outfile).'-errors.txt', date('Y-m-d H:i:s').': '.$err, FILE_APPEND);
    } else {
    file_put_contents(QR_LOG_DIR.'errors.txt', date('Y-m-d H:i:s').': '.$err, FILE_APPEND);
    }
    }
    }
    }
    //----------------------------------------------------------------------
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