网站建设课程设计的必要性发稿平台
最近因项目需求，需要对qrcode 进行一些简单修改，发现一些问题，顺便记录一下
目前最新的版本是4.2，在环境是 PHP8 ，laravel11 的版本默认下载基本是4.0以上的
如下列代码
QrCode::format('png')->generate('test');
这样会提示需要安装 imagick 的 PHP扩展，如果我们只是单单需要个普通的qrcode ，可以去掉 format(‘png’)，并修改前端代码使用
<img src="data:image/svg+xml;base64,{!! xxxxxx !!}" style="width: 200px" />
如果需要对qrcode 进行复杂一点的操作，比如在qrcode 中需要添加logo，根据开发文档，就一定需要png 格式，这样就必须在服务器上安装 imagick 扩展了！
因为不想安装 imagick 扩展，于是想找其他办法。无意间发现就版本是不需要 imagick ，然后安装 旧版本
"simplesoftwareio/simple-qrcode": "1.3.*"
使用旧版本，就不会提示安装imagick且生成png 图片
以下是旧版本文档部分
<a id="docs-ideas"></a>
## Simple Ideas#### Print ViewOne of the main items that we use this package for is to have QrCodes in all of our print views. This allows our customers to return to the original page after it is printed by simply scanning the code. We achieved this by adding the following into our footer.blade.php file.<div class="visible-print text-center">{!! QrCode::size(100)->generate(Request::url()); !!}<p>Scan me to return to the original page.</p></div>#### Embed A QrCodeYou may embed a qrcode inside of an e-mail to allow your users to quickly scan. The following is an example of how to do this with Laravel.//Inside of a blade template.<img src="{!!$message->embedData(QrCode::format('png')->generate('Embed me into an e-mail!'), 'QrCode.png', 'image/png')!!}"><a id="docs-usage"></a>
## Usage#### Basic UsageUsing the QrCode Generator is very easy. The most basic syntax is:QrCode::generate('Make me into a QrCode!');This will make a QrCode that says "Make me into a QrCode!"#### Generate`Generate` is used to make the QrCode.QrCode::generate('Make me into a QrCode!');>Heads up! This method must be called last if using within a chain.`Generate` by default will return a SVG image string. You can print this directly into a modern browser within Laravel's Blade system with the following:{!! QrCode::generate('Make me into a QrCode!'); !!}The `generate` method has a second parameter that will accept a filename and path to save the QrCode.QrCode::generate('Make me into a QrCode!', '../public/qrcodes/qrcode.svg');#### Format Change>QrCode Generator is setup to return a SVG image by default.>Watch out! The `format` method must be called before any other formatting options such as `size`, `color`, `backgroundColor`, and `margin`.Three formats are currently supported; PNG, EPS, and SVG. To change the format use the following code:QrCode::format('png'); //Will return a PNG imageQrCode::format('eps'); //Will return a EPS imageQrCode::format('svg'); //Will return a SVG image#### Size Change>QrCode Generator will by default return the smallest size possible in pixels to create the QrCode.You can change the size of a QrCode by using the `size` method. Simply specify the size desired in pixels using the following syntax:QrCode::size(100);#### Color Change>Be careful when changing the color of a QrCode. Some readers have a very difficult time reading QrCodes in color.All colors must be expressed in RGB (Red Green Blue). You can change the color of a QrCode by using the following:QrCode::color(255,0,255);Background color changes are also supported and be expressed in the same manner.QrCode::backgroundColor(255,255,0);#### Margin ChangeThe ability to change the margin around a QrCode is also supported. Simply specify the desired margin using the following syntax:QrCode::margin(100);#### Error CorrectionChanging the level of error correction is easy. Just use the following syntax:QrCode::errorCorrection('H');The following are supported options for the `errorCorrection` method.| Error Correction | Assurance Provided |
| --- | --- |
| L | 7% of codewords can be restored. |
| M | 15% of codewords can be restored. |
| Q | 25% of codewords can be restored. |
| H | 30% of codewords can be restored. |>The more error correction used; the bigger the QrCode becomes and the less data it can store. Read more about [error correction](http://en.wikipedia.org/wiki/QR_code#Error_correction).#### EncodingChange the character encoding that is used to build a QrCode. By default `ISO-8859-1` is selected as the encoder. Read more about [character encoding](http://en.wikipedia.org/wiki/Character_encoding) You can change this to any of the following:QrCode::encoding('UTF-8')->generate('Make me a QrCode with special symbols ♠♥!!');| Character Encoder |
| --- |
| ISO-8859-1 |
| ISO-8859-2 |
| ISO-8859-3 |
| ISO-8859-4 |
| ISO-8859-5 |
| ISO-8859-6 |
| ISO-8859-7 |
| ISO-8859-8 |
| ISO-8859-9 |
| ISO-8859-10 |
| ISO-8859-11 |
| ISO-8859-12 |
| ISO-8859-13 |
| ISO-8859-14 |
| ISO-8859-15 |
| ISO-8859-16 |
| SHIFT-JIS |
| WINDOWS-1250 |
| WINDOWS-1251 |
| WINDOWS-1252 |
| WINDOWS-1256 |
| UTF-16BE |
| UTF-8 |
| ASCII |
| GBK |
| EUC-KR |>An error of `Could not encode content to ISO-8859-1` means that the wrong character encoding type is being used. We recommend `UTF-8` if you are unsure.#### MergeThe `merge` method merges an image over a QrCode. This is commonly used to placed logos within a QrCode.QrCode::merge($filename, $percentage, $absolute);//Generates a QrCode with an image centered in the middle.QrCode::format('png')->merge('path-to-image.png')->generate();//Generates a QrCode with an image centered in the middle. The inserted image takes up 30% of the QrCode.QrCode::format('png')->merge('path-to-image.png', .3)->generate();//Generates a QrCode with an image centered in the middle. The inserted image takes up 30% of the QrCode.QrCode::format('png')->merge('http://www.google.com/someimage.png', .3, true)->generate();>The `merge` method only supports PNG at this time.
>The filepath is relative to app base path if `$absolute` is set to `false`. Change this variable to `true` to use absolute paths.>You should use a high level of error correction when using the `merge` method to ensure that the QrCode is still readable. We recommend using `errorCorrection('H')`.#### Advance UsageAll methods support chaining. The `generate` method must be called last and any `format` change must be called first. For example you could run any of the following:QrCode::size(250)->color(150,90,10)->backgroundColor(10,14,244)->generate('Make me a QrCode!');QrCode::format('png')->size(399)->color(40,40,40)->generate('Make me a QrCode!');You can display a PNG image without saving the file by providing a raw string and encoding with `base64_encode`.<img src="data:image/png;base64, {!! base64_encode(QrCode::format('png')->size(100)->generate('Make me into an QrCode!')) !!} "><a id="docs-helpers"></a>
## Helpers#### What are helpers?Helpers are an easy way to create QrCodes that cause a reader to perform a certain action when scanned. #### E-MailThis helper generates an e-mail qrcode that is able to fill in the e-mail address, subject, and body.QrCode::email($to, $subject, $body);//Fills in the to addressQrCode::email('foo@bar.com');//Fills in the to address, subject, and body of an e-mail.QrCode::email('foo@bar.com', 'This is the subject.', 'This is the message body.');//Fills in just the subject and body of an e-mail.QrCode::email(null, 'This is the subject.', 'This is the message body.');#### GeoThis helper generates a latitude and longitude that a phone can read and open the location up in Google Maps or similar app.QrCode::geo($latitude, $longitude);QrCode::geo(37.822214, -122.481769);#### Phone NumberThis helper generates a QrCode that can be scanned and then dials a number.QrCode::phoneNumber($phoneNumber);QrCode::phoneNumber('555-555-5555');QrCode::phoneNumber('1-800-Laravel');#### SMS (Text Messages)This helper makes SMS messages that can be prefilled with the send to address and body of the message.QrCode::SMS($phoneNumber, $message);//Creates a text message with the number filled in.QrCode::SMS('555-555-5555');//Creates a text message with the number and message filled in.QrCode::SMS('555-555-5555', 'Body of the message');#### WiFiThis helpers makes scannable QrCodes that can connect a phone to a WiFI network.QrCode::wiFi(['encryption' => 'WPA/WEP','ssid' => 'SSID of the network','password' => 'Password of the network','hidden' => 'Whether the network is a hidden SSID or not.']);//Connects to an open WiFi network.QrCode::wiFi(['ssid' => 'Network Name',]);//Connects to an open, hidden WiFi network.QrCode::wiFi(['ssid' => 'Network Name','hidden' => 'true']);//Connects to an secured, WiFi network.QrCode::wiFi(['ssid' => 'Network Name','encryption' => 'WPA','password' => 'myPassword']);>WiFi scanning is not currently supported on Apple Products.<a id="docs-common-usage"></a>
##Common QrCode UsageYou can use a prefix found in the table below inside the `generate` section to create a QrCode to store more advanced information:QrCode::generate('http://www.simplesoftware.io');| Usage | Prefix | Example |
| --- | --- | --- |
| Website URL | http:// | http://www.simplesoftware.io |
| Secured URL | https:// | https://www.simplesoftware.io |
| E-mail Address | mailto: | mailto:support@simplesoftware.io |
| Phone Number | tel: | tel:555-555-5555 |
| Text (SMS) | sms: | sms:555-555-5555 |
| Text (SMS) With Pretyped Message | sms: | sms::I am a pretyped message |
| Text (SMS) With Pretyped Message and Number | sms: | sms:555-555-5555:I am a pretyped message |
| Geo Address | geo: | geo:-78.400364,-85.916993 |
| MeCard | mecard: | MECARD:Simple, Software;Some Address, Somewhere, 20430;TEL:555-555-5555;EMAIL:support@simplesoftware.io; |
| VCard | BEGIN:VCARD | [See Examples](https://en.wikipedia.org/wiki/VCard) |
| Wifi | wifi: | wifi:WEP/WPA;SSID;PSK;Hidden(True/False) |<a id="docs-outside-laravel"></a>
##Usage Outside of LaravelYou may use this package outside of Laravel by instantiating a new `BaconQrCodeGenerator` class.use SimpleSoftwareIO\QrCode\BaconQrCodeGenerator;$qrcode = new BaconQrCodeGenerator;$qrcode->size(500)->generate('Make a qrcode without Laravel!');