php 二维码生成
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生成二维码，有好几种方法，最快捷的方法就是使用Google的api。可惜Google被墙，很多时候并不好使。现在说一种比较好用的方法。
详细的文档和代码，请移步http://phpqrcode.sourceforge.net/。
下面是精简版，根据写入的信息，自动生成二维码。并且保存到指定的目录。
主程序代码
<?php include "./phpqrcode/qrcode.php"; //导入主文件
$PNG_TEMP_DIR = dirname(__FILE__).DIRECTORY_SEPARATOR.'qrcode'.DIRECTORY_SEPARATOR;//文件保存目录
$PNG_WEB_DIR = 'qrcode/';//用于预览
if (!file_exists($PNG_TEMP_DIR))
mkdir($PNG_TEMP_DIR);
$data = "test";//二维码写入内容
$errorCorrectionLevel = 'L';//错误处理级别
$matrixPointSize = 6;//二维码尺寸大小
//md5加密生成文件名，data可以使用数据库id或者其他唯一标识符
$filename = $PNG_TEMP_DIR.md5($data.'|'.$errorCorrectionLevel.'|'.$matrixPointSize).'.png';
//使用QRcode类生成二维码,文件保存在PNG_TEMP_DIR下
QRcode::png($data, $filename, $errorCorrectionLevel, $matrixPointSize, 2);
//图片预览
echo '<img src="/static/imghw/default1.png" data-src="'.$PNG_WEB_DIR.basename($filename).'" class="lazy" / alt="php 二维码生成" ><hr>';
?>登录后复制
不能添加附件，这是逼我贴上下面的代码啊。。。把下面这长代码，复制到新文件中，命名为qrcode.php.运行上面的代码就能生成二维码了。。。。
贴两张生成的二维码
php类文件（来自于http://phpqrcode.sourceforge.net/）
<?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:
*
* http://phpqrcode.sourceforge.net/
* https://sourceforge.net/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
*/
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 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; $a makeMaskNo($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);
}
}
}
}
//----------------------------------------------------------------------
public static function dumpMask($frame)
{
$width = count($frame);
for($y=0;$y
<thead><tr style="border-bottom:1px solid silver"><td colspan="2" style="text-align:center">BENCHMARK</td></tr></thead>
<tbody>';
foreach($GLOBALS['qr_time_bench'] as $markerId=>$thisTime) {
if ($p > 0) {
echo '<tr>
<th style="text-align:right">till '.$markerId.': </th>
<td>'.number_format($thisTime-$lastTime, 6).'s</td>
</tr>';
} else {
$startTime = $thisTime;
}
$p++;
$lastTime = $thisTime;
}
echo '</tbody>
<tfoot>
<tr style="border-top:2px solid black">
<th style="text-align:right">TOTAL: </th>
<td>'.number_format($lastTime-$startTime, 6).'s</td>
</tr>
</tfoot>
';
}
}
//##########################################################################
QRtools::markTime('start');
//---- qrspec.php -----------------------------
/*
* PHP QR Code encoder
*
* QR Code specifications
*
* 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>
*
* The following data / specifications are taken from
* "Two dimensional symbol -- QR-code -- Basic Specification" (JIS X0510:2004)
* or
* "Automatic identification and data capture techniques --
* QR Code 2005 bar code symbology specification" (ISO/IEC 18004:2006)
*
* 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
*/
define('QRSPEC_VERSION_MAX', 40);
define('QRSPEC_WIDTH_MAX', 177);
define('QRCAP_WIDTH', 0);
define('QRCAP_WORDS', 1);
define('QRCAP_REMINDER', 2);
define('QRCAP_EC', 3);
class QRspec {
public static $capacity = array(
array( 0, 0, 0, array( 0, 0, 0, 0)),
array( 21, 26, 0, array( 7, 10, 13, 17)), // 1
array( 25, 44, 7, array( 10, 16, 22, 28)),
array( 29, 70, 7, array( 15, 26, 36, 44)),
array( 33, 100, 7, array( 20, 36, 52, 64)),
array( 37, 134, 7, array( 26, 48, 72, 88)), // 5
array( 41, 172, 7, array( 36, 64, 96, 112)),
array( 45, 196, 0, array( 40, 72, 108, 130)),
array( 49, 242, 0, array( 48, 88, 132, 156)),
array( 53, 292, 0, array( 60, 110, 160, 192)),
array( 57, 346, 0, array( 72, 130, 192, 224)), //10
array( 61, 404, 0, array( 80, 150, 224, 264)),
array( 65, 466, 0, array( 96, 176, 260, 308)),
array( 69, 532, 0, array( 104, 198, 288, 352)),
array( 73, 581, 3, array( 120, 216, 320, 384)),
array( 77, 655, 3, array( 132, 240, 360, 432)), //15
array( 81, 733, 3, array( 144, 280, 408, 480)),
array( 85, 815, 3, array( 168, 308, 448, 532)),
array( 89, 901, 3, array( 180, 338, 504, 588)),
array( 93, 991, 3, array( 196, 364, 546, 650)),
array( 97, 1085, 3, array( 224, 416, 600, 700)), //20
array(101, 1156, 4, array( 224, 442, 644, 750)),
array(105, 1258, 4, array( 252, 476, 690, 816)),
array(109, 1364, 4, array( 270, 504, 750, 900)),
array(113, 1474, 4, array( 300, 560, 810, 960)),
array(117, 1588, 4, array( 312, 588, 870, 1050)), //25
array(121, 1706, 4, array( 336, 644, 952, 1110)),
array(125, 1828, 4, array( 360, 700, 1020, 1200)),
array(129, 1921, 3, array( 390, 728, 1050, 1260)),
array(133, 2051, 3, array( 420, 784, 1140, 1350)),
array(137, 2185, 3, array( 450, 812, 1200, 1440)), //30
array(141, 2323, 3, array( 480, 868, 1290, 1530)),
array(145, 2465, 3, array( 510, 924, 1350, 1620)),
array(149, 2611, 3, array( 540, 980, 1440, 1710)),
array(153, 2761, 3, array( 570, 1036, 1530, 1800)),
array(157, 2876, 0, array( 570, 1064, 1590, 1890)), //35
array(161, 3034, 0, array( 600, 1120, 1680, 1980)),
array(165, 3196, 0, array( 630, 1204, 1770, 2100)),
array(169, 3362, 0, array( 660, 1260, 1860, 2220)),
array(173, 3532, 0, array( 720, 1316, 1950, 2310)),
array(177, 3706, 0, array( 750, 1372, 2040, 2430)) //40
);
//----------------------------------------------------------------------
public static function getDataLength($version, $level)
{
return self::$capacity[$version][QRCAP_WORDS] - self::$capacity[$version][QRCAP_EC][$level];
}
//----------------------------------------------------------------------
public static function getECCLength($version, $level)
{
return self::$capacity[$version][QRCAP_EC][$level];
}
//----------------------------------------------------------------------
public static function getWidth($version)
{
return self::$capacity[$version][QRCAP_WIDTH];
}
//----------------------------------------------------------------------
public static function getRemainder($version)
{
return self::$capacity[$version][QRCAP_REMINDER];
}
//----------------------------------------------------------------------
public static function getMinimumVersion($size, $level)
{
for($i=1; $i= $size)
return $i;
}
return -1;
}
//######################################################################
public static $lengthTableBits = array(
array(10, 12, 14),
array( 9, 11, 13),
array( 8, 16, 16),
array( 8, 10, 12)
);
//----------------------------------------------------------------------
public static function lengthIndicator($mode, $version)
{
if ($mode == QR_MODE_STRUCTURE)
return 0;
if ($version QRSPEC_VERSION_MAX)
return 0;
return self::$versionPattern[$version -7];
}
// Format information --------------------------------------------------
// See calcFormatInfo in tests/test_qrspec.c (orginal qrencode c lib)
public static $formatInfo = array(
array(0x77c4, 0x72f3, 0x7daa, 0x789d, 0x662f, 0x6318, 0x6c41, 0x6976),
array(0x5412, 0x5125, 0x5e7c, 0x5b4b, 0x45f9, 0x40ce, 0x4f97, 0x4aa0),
array(0x355f, 0x3068, 0x3f31, 0x3a06, 0x24b4, 0x2183, 0x2eda, 0x2bed),
array(0x1689, 0x13be, 0x1ce7, 0x19d0, 0x0762, 0x0255, 0x0d0c, 0x083b)
);
public static function getFormatInfo($mask, $level)
{
if($mask 7)
return 0;
if($level 3)
return 0;
return self::$formatInfo[$level][$mask];
}
// Frame ---------------------------------------------------------------
// Cache of initial frames.
public static $frames = array();
/** --------------------------------------------------------------------
* Put a finder pattern.
* @param frame
* @param width
* @param ox,oy upper-left coordinate of the pattern
*/
public static function putFinderPattern(&$frame, $ox, $oy)
{
$finder = array(
"\xc1\xc1\xc1\xc1\xc1\xc1\xc1",
"\xc1\xc0\xc0\xc0\xc0\xc0\xc1",
"\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
"\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
"\xc1\xc0\xc1\xc1\xc1\xc0\xc1",
"\xc1\xc0\xc0\xc0\xc0\xc0\xc1",
"\xc1\xc1\xc1\xc1\xc1\xc1\xc1"
);
for($y=0; $y= 7) {
$vinf = self::getVersionPattern($version);
$v = $vinf;
for($x=0; $x> 1;
}
}
$v = $vinf;
for($y=0; $y> 1;
}
}
}
// and a little bit...
$frame[$width - 8][8] = "\x81";
return $frame;
}
//----------------------------------------------------------------------
public static function debug($frame, $binary_mode = false)
{
if ($binary_mode) {
foreach ($frame as &$frameLine) {
$frameLine = join('<span class="m"> </span>', explode('0', $frameLine));
$frameLine = join('██', explode('1', $frameLine));
}
?>
<style>
.m { background-color: white; }
</style>
<?php echo '<pre class="brush:php;toolbar:false"><tt><br><br><br> ';
echo join("<br> ", $frame);
echo '</tt></deltalab></fukuchi></deltalab></deltalab></fukuchi>登录后复制
'; } else { foreach ($frame as &$frameLine) { $frameLine = join(' ', explode("\xc0", $frameLine)); $frameLine = join('?', explode("\xc1", $frameLine)); $frameLine = join(' ', explode("\xa0", $frameLine)); $frameLine = join('?', explode("\xa1", $frameLine)); $frameLine = join('◇', explode("\x84", $frameLine)); //format 0 $frameLine = join('◆', explode("\x85", $frameLine)); //format 1 $frameLine = join('?', explode("\x81", $frameLine)); //special bit $frameLine = join(' ', explode("\x90", $frameLine)); //clock 0 $frameLine = join('?', explode("\x91", $frameLine)); //clock 1 $frameLine = join(' ', explode("\x88", $frameLine)); //version $frameLine = join('?', explode("\x89", $frameLine)); //version $frameLine = join('?', explode("\x01", $frameLine)); $frameLine = join('?', explode("\0", $frameLine)); } ?> "; echo join("
", $frame); echo ""; } } //---------------------------------------------------------------------- public static function serial($frame) { return gzcompress(join("\n", $frame), 9); } //---------------------------------------------------------------------- public static function unserial($code) { return explode("\n", gzuncompress($code)); } //---------------------------------------------------------------------- public static function newFrame($version) { if($version QRSPEC_VERSION_MAX) return null; if(!isset(self::$frames[$version])) { $fileName = QR_CACHE_DIR.'frame_'.$version.'.dat'; if (QR_CACHEABLE) { if (file_exists($fileName)) { self::$frames[$version] = self::unserial(file_get_contents($fileName)); } else { self::$frames[$version] = self::createFrame($version); file_put_contents($fileName, self::serial(self::$frames[$version])); } } else { self::$frames[$version] = self::createFrame($version); } } if(is_null(self::$frames[$version])) return null; return self::$frames[$version]; } //---------------------------------------------------------------------- public static function rsBlockNum($spec) { return $spec[0] + $spec[3]; } public static function rsBlockNum1($spec) { return $spec[0]; } public static function rsDataCodes1($spec) { return $spec[1]; } public static function rsEccCodes1($spec) { return $spec[2]; } public static function rsBlockNum2($spec) { return $spec[3]; } public static function rsDataCodes2($spec) { return $spec[4]; } public static function rsEccCodes2($spec) { return $spec[2]; } public static function rsDataLength($spec) { return ($spec[0] * $spec[1]) + ($spec[3] * $spec[4]); } public static function rsEccLength($spec) { return ($spec[0] + $spec[3]) * $spec[2]; } } //---- qrimage.php ----------------------------- /* * PHP QR Code encoder * * Image output of code using GD2 * * PHP QR Code is distributed under LGPL 3 * Copyright (C) 2010 Dominik Dzienia
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