PHP identification QR Code (reproduced)

Near paragraph need to write a PHP to identify the QR code function, on-line search for a long time to solve the problem. To record the way to solve the problem.

The first way to find is a called php-zbarcode extension, the installation of their own according to the network installed ImageMagick and zbar , but the compile php-zbarcode error, and later replaced by the center OS system or error, due to the limited technology will give up.

Then we found a extension on GitHub called Php-qrcode-detector-decoder, and the installation method and usage are as follows, but only two-dimensional images can be identified after the installation is complete. But the QR code in a picture is not recognized (only a small part of the graph is a QR code). Did not meet my needs and continue to look for some.

//在控台执行安装composer require khanamiryan/qrcode-detector-decoder//使用方法require __DIR__ . "/vendor/autoload.php";  $qrcode = new QrReader('path/to_image');$text = $qrcode->text();         //返回二维码的内容

Finally, I found out that Php-qrcode-detector-decoder is based on? Zxing Library (Google launched to identify a variety of format bar code Open source project), and I also successfully found the Zxing library GitHub address, which includes a lot of language QR code recognition, interested can see for themselves. Below we use the php-zxing extension.

Introduce the extension in the composer file and then composer update{"require": {"dsiddharth2/php-zxing": "Dev-master"}}//code use in PHP  Phpzxing\phpzxingdecoder; $config = Array (' try_harder ' = = true,//When you do not know the location of the QR code is set to True ' multiple_bar_codes ' = True,//when to identify multiple QR codes is set to true ' crop ' = ' 100,200,300,300 ',//Set approximate location of QR code; $decoder = new Phpzxingdecoder ($confi  g); $decoder->setjavapath ('/your/path/to/java '); Set the installation path for the JDK, which is in Java and requires a JDK. If you set the environment variable for the JDK, you do not need to set $decodeddata = current ($decoder->decode ('. /images/code128barcode.jpg '));            The path requires an absolute path or relative path, cannot be a url/** * returned object type * The Zxingimage object that is returned when the recognition succeeds includes the contents of the * getimagevalue QR code * GetFormat Format of encoded image * GetType gets the type of decoded image, for example: Url,text etc * Getimagepath get image Path * not recognized in picture QR Code returns zxingbarnotfound object includes * Getimageerrorcode error code to get the image not found * geterrormessage error message * Geti  Magepath gets the path of the image/**//such as $decodeddata->getimagevalue (); Two-dimensional code content

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PHP identification QR Code (reproduced)