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Specific steps to generate QR code using yii2

王林

Mar 15, 2021 am 10:22 AM

yii2 QR code

Specific steps to generate QR code using yii2

The specific steps to generate the QR code are as follows:

1. Download the class library from the official website

After downloading the class library from the official website, make sure The current PHP environment supports GD2, and then we only need to use phpqrcode.php to generate QR codes.

phpqrcode.php provides a key png() method, in which the

parameter $text represents the generated two-digit information text;
The parameter $outfile indicates whether to output a QR code image file, the default is no;
The parameter $level indicates the fault tolerance rate, that is, the covered area can still be recognized , respectively L (QR_ECLEVEL_L, 7%), M (QR_ECLEVEL_M, 15%), Q (QR_ECLEVEL_Q, 25%), H (QR_ECLEVEL_H, 30%);
Parameter $size Indicates the size of the generated image, the default is 3; the parameter $margin indicates the spacing value of the blank area of ??the border around the QR code;
The parameter $saveandprint indicates whether to save the QR code and display it.

2. After downloading, place the decompressed phpqrcode folder under the extensions folder, as shown below:

Specific steps to generate QR code using yii2

3. Introduce class

Yii::$enableIncludePath = false;
Yii::import (&#39;application.extensions.phpqrcode.phpqrcode&#39;, 1 );

4, specific code

public function actionQrcode(){
        $this->breadcrumbs=array_merge($this->breadcrumbs,array(
                &#39;生成二維碼&#39;
        ));
        $qrcode_path=&#39;&#39;;
        $file_tmp_name=&#39;&#39;;
        $errors=array();
        if(!empty($_POST)){
            $content = trim($_POST[&#39;content&#39;]); //二維碼內(nèi)容
            $contentSize=$this->getStringLength($content);
            if($contentSize>290){
                $errors[]=&#39;字?jǐn)?shù)過長(zhǎng)，不能多于150個(gè)字符！&#39;;
            }
            Yii::$enableIncludePath = false;
            Yii::import (&#39;application.extensions.phpqrcode.phpqrcode&#39;, 1 );
            if(isset($_FILES[&#39;upimage&#39;][&#39;tmp_name&#39;]) && $_FILES[&#39;upimage&#39;][&#39;tmp_name&#39;] && is_uploaded_file($_FILES[&#39;upimage&#39;][&#39;tmp_name&#39;])){
                if($_FILES[&#39;upimage&#39;][&#39;size&#39;]>512000){
                    $errors[]="你上傳的文件過大，最大不能超過500K。";
                }
                $file_tmp_name=$_FILES[&#39;upimage&#39;][&#39;tmp_name&#39;];
                $fileext = array("image/pjpeg","image/jpeg","image/gif","image/x-png","image/png");
                if(!in_array($_FILES[&#39;upimage&#39;][&#39;type&#39;],$fileext)){
                    $errors[]="你上傳的文件格式不正確，僅支持 png, jpg, gif格式。";
                }
            }
            $tpgs=$_POST[&#39;tpgs&#39;];//圖片格式
            $bas_path=dirname ( Yii::app ()->BasePath );
            $qrcode_bas_path=$bas_path.&#39;/upload/qrcode/&#39;;
            if(!is_dir($qrcode_bas_path)){
                mkdir($qrcode_bas_path, 0777, true);
            }
            $uniqid_rand=date("Ymdhis").uniqid(). rand(1,1000);
            $qrcode_path=$qrcode_bas_path.$uniqid_rand. "_1.".$tpgs;
            $qrcode_path_new=$qrcode_bas_path.$uniqid_rand."_2.".$tpgs;
            if(Helper::getOS()==&#39;Linux&#39;){

                $mv = move_uploaded_file($file_tmp_name, $qrcode_path);
            }else{
                //解決windows下中文文件名亂碼的問題
                $save_path = Helper::safeEncoding($qrcode_path,&#39;GB2312&#39;);
                if(!$save_path){
                    $errors[]=&#39;上傳失敗，請(qǐng)重試！&#39;;
                }
                $mv = move_uploaded_file($file_tmp_name, $qrcode_path);
            }
            if(empty($errors)){
                $errorCorrectionLevel = $_POST[&#39;errorCorrectionLevel&#39;];//容錯(cuò)級(jí)別
                $matrixPointSize = $_POST[&#39;matrixPointSize&#39;];//生成圖片大小
                $matrixMarginSize = $_POST[&#39;matrixMarginSize&#39;];//邊距大小
                //生成二維碼圖片
                QRcode::png($content,$qrcode_path_new, $errorCorrectionLevel, $matrixPointSize, $matrixMarginSize);
                $QR = $qrcode_path_new;//已經(jīng)生成的原始二維碼圖
                $logo = $qrcode_path;//準(zhǔn)備好的logo圖片
                if (file_exists($logo)) {
                    $QR = imagecreatefromstring(file_get_contents($QR));
                    $logo = imagecreatefromstring(file_get_contents($logo));
                    $QR_width = imagesx($QR);//二維碼圖片寬度
                    $QR_height = imagesy($QR);//二維碼圖片高度
                    $logo_width = imagesx($logo);//logo圖片寬度
                    $logo_height = imagesy($logo);//logo圖片高度
                    $logo_qr_width = $QR_width / 5;
                    $scale = $logo_width/$logo_qr_width;
                    $logo_qr_height = $logo_height/$scale;
                    $from_width = ($QR_width - $logo_qr_width) / 2;
                    //重新組合圖片并調(diào)整大小
                    imagecopyresampled($QR, $logo, $from_width, $from_width, 0, 0, $logo_qr_width,
                    $logo_qr_height, $logo_width, $logo_height);
                    //輸出圖片
//                     header("Content-type: image/png");
                    imagepng($QR,$qrcode_path);
                    imagedestroy($QR);
                }else{
                    $qrcode_path=$qrcode_path_new;
                }
                $qrcode_path=str_replace($bas_path,&#39;&#39;, $qrcode_path);
            }else{
                $qrcode_path=&#39;&#39;;
            }
        }
        $data=array(&#39;data&#39;=>array(&#39;errors&#39;=>$errors,&#39;qrcode_path&#39;=>$qrcode_path));
        $this->render ( &#39;qrcode&#39;,$data);
    }

Free video tutorial sharing: php video tutorial

4, front-end upload interface

<?php
$vars = get_defined_vars ();
$data = $vars [&#39;data&#39;];
$content=Yii::app ()->request->hostInfo;
$matrixPointSize=6;
$matrixMarginSize=2;
$errorCorrectionLevel=&#39;M&#39;;
$tpgs=&#39;gif&#39;;
if(!empty($_POST)){
    $content=$_POST[&#39;content&#39;];
    $matrixPointSize=$_POST[&#39;matrixPointSize&#39;];
    $matrixMarginSize=$_POST[&#39;matrixMarginSize&#39;];
    $errorCorrectionLevel=$_POST[&#39;errorCorrectionLevel&#39;];
    $tpgs=$_POST[&#39;tpgs&#39;];
}
$arrayCorrectionLevel=array(&#39;L&#39;=>&#39;L - Low (7%)&#39;,&#39;M&#39;=>&#39;M - Medium (15%)&#39;,&#39;Q&#39;=>&#39;Q - Quartile (25%)&#39;,&#39;H&#39;=>&#39;H - High (30%)&#39;);
$arrayTpgs=array(&#39;gif&#39;=>&#39;gif格式&#39;,&#39;png&#39;=>&#39;png格式&#39;,&#39;jpg格式&#39;);
?>
<div class="col-md-12">
    <div class="form-horizontal panel panel-default margin-t-10 b-img">
        <div class="panel-heading">
            <div class="pull-left">
                <span class="g-bg glyphicon glyphicon-wrench margin-r-2"
                    aria-hidden="true"></span>在線生成二維碼
            </div>
            <div class="clearfix"></div>
        </div>
<?php
$form = $this->beginWidget ( &#39;CActiveForm&#39;, array (
        &#39;id&#39; => &#39;qrcode-form&#39;,
        &#39;htmlOptions&#39; => array (
                &#39;id&#39; => &#39;view_table&#39;,
                &#39;class&#39; => &#39;add-form padding-10&#39;,
                &#39;enctype&#39; => &#39;multipart/form-data&#39;
        ),
        &#39;enableAjaxValidation&#39; => false
) );
?>
    <div class="form-group">
            <label class="col-lg-2 control-label">尺寸大小</label>
            <div class="col-lg-3">
                <select class="form-control" id="matrixPointSize"
                    name="matrixPointSize">
                    <?php for ($i=1;$i<21;$i++):?>
    <option value="<?php echo $i;?>" <?php echo $i==$matrixPointSize?&#39;selected&#39;:&#39;&#39;;?>><?php echo $i;?></option>
                    <?php endfor;?>
                    </select>
            </div>
        </div>
        <div class="form-group">
            <label class="col-lg-2 control-label">邊距大小</label>
            <div class="col-lg-3">
                <select class="form-control" id="matrixMarginSize"
                    name="matrixMarginSize">
                    <?php for ($i=0;$i<21;$i++):?>
    <option value="<?php echo $i;?>" <?php echo $i==$matrixMarginSize?&#39;selected&#39;:&#39;&#39;;?>><?php echo $i;?></option>
                    <?php endfor;?>
                </select>
            </div>
        </div>
        <div class="form-group">
            <label class="col-lg-2 control-label">容錯(cuò)級(jí)別</label>
            <div class="col-lg-3">
            <?php echo CHtml::dropDownList(&#39;errorCorrectionLevel&#39;,$errorCorrectionLevel, $arrayCorrectionLevel,array(&#39;class&#39;=>&#39;form-control&#39;));?>
            </div>
        </div>
        <div class="form-group">
            <label class="col-lg-2 control-label">保存格式</label>
            <div class="col-lg-3">
            <?php echo CHtml::dropDownList(&#39;tpgs&#39;,$tpgs, $arrayTpgs,array(&#39;class&#39;=>&#39;form-control&#39;));?>
            </div>
        </div>
        <div class="form-group">
            <label class="col-lg-2 control-label">二維碼內(nèi)容</label>
            <div class="col-lg-5">
                <?php echo CHtml::textField(&#39;content&#39;,$content,array(&#39;class&#39;=>&#39;form-control&#39;,&#39;maxlength&#39;=>150));?>
            </div>
        </div>
        <div class="form-group">
            <label class="col-lg-2 control-label">二維碼logo圖片</label>
            <div class="col-lg-5">
                <div class="col-md-6">
                        <input id="upimage" type="file" name="upimage" class="hidden">
                        <input id="tmp_file" class="form-control" type="text" value="gif，png，jpg">
                    </div>
                <div class="col-md-6"><a class="btn btn-default" onclick="$(&#39;input[id=upimage]&#39;).click();">選擇文件</a></div>
            </div>
        </div>
        <div class="list_back">
            <input type="submit" value="生成二維碼" class="btn btn-success">
        </div>
    </div>
<?php $this->endWidget(); ?>
    <div class="panel panel-default margin-t-10 b-img">
        <div class="panel-heading">
            <span class="g-bg glyphicon glyphicon-wrench margin-r-2" aria-hidden="true"></span>二維碼
        </div>
        <div class="panel-body">
        <?php if(empty($_POST)):?>
        <?php echo CHtml::image(&#39;/static/tool/qrcode/qrcode.gif&#39;,&#39;二維碼&#39;);?>
        <?php endif;?>
        <?php if(!empty($data[&#39;errors&#39;])):?>
            <label class="col-lg-2 text-right">生成失敗</label>
            <div class="col-lg-5">
            <?php foreach ($data[&#39;errors&#39;] as $e):?>
            <?php echo $e;?><br>
            <?php endforeach;?>
            </div>
        <?php endif;?>
        <?php if(!empty($data[&#39;qrcode_path&#39;])):?>
            <?php echo CHtml::image($data[&#39;qrcode_path&#39;],&#39;二維碼&#39;);?>
            <a class="btn btn-success color-f" href="<?php echo $data[&#39;qrcode_path&#39;];?>" target="_blank"><span aria-hidden="true" class="glyphicon glyphicon-download-alt margin-r-2"></span>右鍵另存為二維碼</a>
        <?php endif;?>
        </div>
    </div>
<?php $this->renderPartial(&#39;/component/duoshuo_common&#39;);?>
</div>

The final effect is as follows:

Specific steps to generate QR code using yii2

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Specific steps to generate QR code using yii2

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