t0k4rt / phpqrcode Goto Github PK

this is my problem detail ,can somebody help?
In the PHP error_log，Intermittent occurrence of warning,like this ：
1.imagecreatefromstring(): gd-png: fatal libpng error: [00][00][00][00]: invalid chunk type
2.imagecreatefromstring(): gd-png: fatal libpng error: Read Error: truncated data
3.imagecreatefromstring(): gd-png: fatal libpng error: PLTE: CRC error
4.imagecreatefromstring(): gd warning: one parameter to a memory allocation multiplication is negative or zero
5.imagecreatefromstring(): gd-png: fatal libpng error: IHDR: CRC error

1.Server environment（centos7.2+php7.1 + nginx+gd2.1.0+libpng1.5.13+zlib1.2.7）
2.QPS is somewhere around 100 to 500
3.code like this:
QRcode::png($url, $file_path, $errorCorrectionLevel, $matrixPointSize, $margin);
$QR = imagecreatefromstring(file_get_contents($file_path));

I wonder if the file_put_content need a lock in phpqrcode project ?
This problem has been bothering me for a few days，Jesus，I'm crazy..... help

Hi!

First, thank you for the nice library!

I found a issue in the code. Lines 63 and 70 in /qrvect.php should be
63: $c = round((($fore_color & 0xFF000000) >> 24) / 255, 5);
70: $c = round((($back_color & 0xFF000000) >> 24) / 255, 5);
instead of
63: $c = round((($fore_color & 0xFF000000) >> 16) / 255, 5);
70: $c = round((($back_color & 0xFF000000) >> 16) / 255, 5);

cause of a wrong calculation for cyan-color.

Thank you!

Best regards
Max

can u add support for composer ?

http://getcomposer.org/

Calling QRcode::eps results in:

Fatal error: Call to undefined method QRcode::eps()

This is when using the combined phpqrcode.php file

can you help me on how to put label in qrcode

I have seen the detailed examples in http://phpqrcode.sourceforge.net/examples/index.php?example=211 in this site and created the example as shown in this site. but it saying no method canvas and i searched the entire project there is no canvas support. please tell me if im doing worng or the examples are wrong.

Hi !
I need to display a page with 3 QR Codes : one big, one medium and one small.

After checking the doc, I found this :

$dataText   = 'PHP QR Code :)'; 
    $svgTagId   = 'id-of-svg'; 
    $saveToFile = false; 
    $imageWidth = 250; // px 

    // SVG file format support 
    $svgCode = QRcode::svg($dataText, $svgTagId, $saveToFile, QR_ECLEVEL_L, $imageWidth); 

    echo $svgCode;

But it doesn't work, nothing is displayed...

Can somebody help me ?

Thanks,

Search for if(string == NULL) { it gives off a syntax error

It take 4s or more when I created qrcode with this lib.
here is my code:
include "phpqrcode/qrlib.php"; $text = "http://localhost:8080/Home/Index/index/some_code_value/123456.html"; \QRcode::png($text,false,'H',5,1);
Someone can tell me why?

Hello, very neat plugin. Is there a way to get the background transparent instead of setting a color?

Hello there,

in qrvact.php on line 171:
$output = ...;
and in line 177 new implementation:
$output = ...;

Needless double implemantation i guess.

And in line 183:
!empty($back_color) is false when $back_color = 0x000000, so no background is set when we want a black one.

Encoded Russian text is cropped. For example, original text is
Русский текст
Decoded QR value is
Русски
It's quite similar to wrong detection of the original string length (in bytes, not in chars). QR scanning application works correct (checked)! The default page (index.php) used.

I want To Generate Qr Code with Random Number when i click the generate Qrcode.
And ThaRcode should be unique Every time.

When adding the library via composer and I set my own QR_CACHE_DIR and QR_LOG_DIR constants I have some PHP notices.

This could be related to #4

qrsplit.php line 283, wrong number of parameters

Not knowing a whole lot of php etc...

Have you been able to get or know a way to get your code to use a text box?
For the most part I have it working with the problem I'm having is that the carriage returns are showing up on the text displayed in the phone QRCode reader.

Row1[]
Row2[]

I'm trying to paste the few lines that I changed but github is not allowing me to do so.
I attached a Qcode of what I did. You can see [] on one of the lines.

Thanks for your time to read my message.
Bob

It should read QRbitstream instead of QRbitrtream.
Not critical for users without need for Kanji.

When qrvect.php generates the code for the svg image it uses the php method "dechex" which does not automatically pad the resulting hex color number with zeros, hence the color black is encoded as a simple "#0" rather than the correct "#000000". I'm not sure about other browsers, but google chrome does not automatically expand this. The result is an svg QRcode image that is not visible against a white background.

I made simple fix by surrounding the call to dechex with php's built in str_pad function.

Does anyone else have a better idea to fix this?

whereis is the qrcanvas.js?

i want to create qr code for the links and also permit user to create qr code for them. so can i use the use to do that basicaly i want to provide qr code to my each user for their link on my site

How to remove?
Thanks

The eps() method and the svg() function both return the content generated, instead of outputting it (which png() does), even though the documentation says otherwise. The methods also set the headers for the content they're outputting, so it seems it wasn't meant to just return the data.

I have a patch that changes this, but as there is a BC concern I'd like to discuss whether we actually want to do that. The patch changes the return to a print / echo, which brings behavior in line with png(), but will break applications that retrieves the content and then stores it somewhere else instead. We might handle that by introducing a second method (I'd prefer to implement the different behaviors as different methods anyway, really) that replicates the old functionality, or introduce the "correct" behavior as a new method - this will require updating the documentation and might be confusing later.

For vectors:
https://github.com/t0k4rt/phpqrcode/blob/master/qrvect.php#L37

For images:
https://github.com/t0k4rt/phpqrcode/blob/master/qrimage.php#L36

I'd like to use your library without changing code.
But if I want to generate the same qr code images for the same text as input I have to change the constant QR_FIND_FROM_RANDOM. In my opinion the better solution would be to make it settable, may be by a method like QRmask::setMaskFindingMode() or so.
This would offer the possibility to generate the same qr code images without changing the code everytime you want to change the finding mask mode.

As title, I find this project via GitHub repository search.

It looks good, but it seems this project has been inactive for whiles.

I wonder this project is still maintained?

looks like abandonware here, anyway: see $TITLE

cheers

Hi, is this code (phpqrcode) more up-to-date than on sourceforge?

I'm have two issues with this code from sourceforge:

1. displays broken image

2. cannot modify header information:

I have checked for extra white space before and after starting and ending php file tags.

Any help would be really appreciated!

Thanks,

Kevin

Trying to export the QR code in EPS format with the encoded string in plain text directly below it, to make a label of sorts.

Been meddling around with the code to try and understand the process and see where I can inject this step but I'm not getting far.

Is this even possible or am I asking too much?

Hi,
Is it possible to add logo on generated Qrcode?, I real need this please/.

The parsing of numeric values inside qrsplit.php leads to an excepption.
The function that parse the value as numeric is broke in in PHP >= 7.
Is there a reason why "ord()" is used instead of "is_numeric()" or perhaps a preg_match() ?
I can help to fix if you tell me what I can do and what don't.
Thanks.

how can i add logo to the qr code to create an option to add logo or pic to the qr code

Hi,

I am adding a qr code image to a pdf using DOM:

QRcode::png($qr_code, "qrcodereplace.png", "L", 4, 4); ... $dompdf = new DOMPDF();
Using external libraries from quickchart.io or chart.googleapis.com () qr images was displayed correctly.
But using self generated image png, then image was saved to own server correctly (),
but after inserting it into PDF it is broken ()

I did image analysis of the png images with https://compress-or-die.com/analyze-process
And all not working images have: ColorType Palette
Each working ones have only difference here: ColorType RGB

Is there any way of changing ColorType of generated PNG or do you know any other issue that is causing this behaviour?

Thank you very much for your help.

Best regards,

Thomas

Hello
I insert QR code into my html which I render via phpwkhtlto pdf
The PDF is not rendered and browser just show me QR code and on the page is a few errors.

<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /mnt/databox/www/myweb/pdf/phpqrcode-master/qrvect.php:147) in <b>/mnt/databox/www/myweb/pdf/wkhtmltopdf/mikehaertl/php-tmpfile/src/File.php</b> on line <b>64</b><br />
<br />

page from where it is started:

  <?php
    ini_set("memory_limit", "128M");
    ini_set('display_errors', '1');
    error_reporting(E_ALL);

    require __DIR__ . '/wkhtmltopdf/autoload.php';
    require_once ('phpqrcode-master/qrlib.php');
    use mikehaertl\wkhtmlto\Pdf;

$svg_QR_Code = QRcode::svg('PHP QR Code :)');


    $pdf = new Pdf;
    $pdf->addPage('

    <html>
    <head>
    </head>
     <body>
     <div id="qr-picture">' .$svg_QR_Code. '  </div>
    </body>
    </html>
');

thank You for any help

I have used the lib to create a parameterised PHP page that we can generate QR codes from the params in the url:

include( '/qrlib/qrlib.php' );

if (isset($_GET['fg'])&&!empty($_GET['fg'])) {
    $fore_color = $_GET['fg'];
} else {
    $fore_color = 0x000000;
}
    
if (isset($_GET['bg'])&&!empty($_GET['bg'])) {
    $back_color = $_GET['bg'];
} else {
    $back_color = 0xFFFFFF;
}

QRcode::png($_GET['url'], false, $_GET['err'], $_GET['size'], $_GET['pixel'], false, $back_color, $fore_color);

This works perfectly for url, err, size and pixel but as soon as I try and set the colours from the URL - the respective colour change (fg or bg) just defaults to black.

However, if the variables $fore_color or $back_color are set explicitly (not through the URL and use the else statement then they work. (I should note that if you look at the above they will default to black FG and white BG if the param isn't set).

I have echo'd out the $fore_color and $back_color to check the values are being passed correctly and they are showing up exactly as expected - this behaviour occurs when one or both of the color params are populated in the URL.

I set up a few examples here:

http://rd.exitex.com/qr.php?url=test&size=40&pixel=1&err=L&bg=0xFFFFFF&fg=0x000000

http://rd.exitex.com/qr.php?url=test&size=40&pixel=1&err=L&bg=0xFFFFFF

http://rd.exitex.com/qr.php?url=test&size=40&pixel=1&err=L&fg=0x000000

http://rd.exitex.com/qr.php?url=test&size=40&pixel=1&err=L

Any advice as to this strange behaviour please advise.

Any plans to create a laravel package version of this library?

I render simply inner HTML via phpwkhtmltopdf, but I have a problem with QR code.

<?php
    ini_set("memory_limit", "128M");
    ini_set('display_errors', '1');
    error_reporting(E_ALL);

    require __DIR__ . '/wkhtmltopdf/autoload.php';
    require_once ('phpqrcode-master/qrlib.php');
    use mikehaertl\wkhtmlto\Pdf;

$svg_QR_Code = QRcode::svg('PHP QR Code :)');

    $pdf = new Pdf;
    $pdf->addPage('

    <html>
    <head>
    </head>
     <body>
     <div id="qr-picture">' .$svg_QR_Code. '  </div>
    </body>
    </html>
');

1. problem is, that the QRcode image is rendered even if I not use the variable
2. and unfortunately is rendered the QR image only without my html
   Thank You

    $bg = hexdec('ffffff');
    var_dump($bg);
    if(isset($_GET['bg']))
        $bg = hexdec(trim($_GET['bg']));

    $fg = hexdec('000000');
    if(isset($_GET['fg']))
        $fg = hexdec(trim($_GET['fg']));


    if($vect_format == 'eps'){
        $filename = md5($_GET['data'].'|'.$eccLevel.'|'.$matrixPointSize).'.eps';
        $filepath = $PNG_TEMP_DIR.$filename;
        QRcode::eps($_GET['data'], $filepath, $eccLevel, $matrixPointSize, 2, true, $bg ,$fg); 
    }

the exported eps seems not correct