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PHP生成一張含有二維碼的圖片(文章末尾附程式碼下載連結)

PHP生成一張圖片用到的類有QRcode,QRencode ,QRtools , QRimage這四個類是主要的。
主導類:QRcode
輔助類:QRencode, QRimage ,QRtools .
請看下圖, 直接貼原始碼!!!

1、直接呼叫函式(引數賦值,返回圖片);

//QRcode
public static function png($text, $outfile = false, $level = QR_ECLEVEL_L, $size = 3, $margin = 4, $saveandprint=false) 
{
    $enc = QRencode::factory($level
, $size, $margin); // var_dump($enc); return $enc->encodePNG($text, $outfile, $saveandprint=false); }

2、轉碼過程,進行工廠模式轉化;

//QRencode
public static function factory($level = QR_ECLEVEL_L, $size = 3, $margin = 4)
{
    // echo "run Qrencode::factory....<br/>";
    $enc = new QRencode();
    $enc
->size = $size; $enc->margin = $margin; switch ($level.'') { case '0': case '1': case '2': case '3': $enc->level = $level; break; case 'l': case 'L': $enc->level = QR_ECLEVEL_L; break
; case 'm': case 'M': $enc->level = QR_ECLEVEL_M; break; case 'q': case 'Q': $enc->level = QR_ECLEVEL_Q; break; case 'h': case 'H': $enc->level = QR_ECLEVEL_H; break; } return $enc; }

3、記錄過程資訊

//QRencode
public function encodePNG($intext, $outfile = false, $saveandprint=false) 
{
    // echo "run Qrencode::encodePNG....<br/>";
    try {

        ob_start();
        $tab = $this->encode($intext);
        $err = ob_get_contents();   //獲取物件內容
        ob_end_clean();             //清除

        if ($err != '')
            QRtools::log($outfile, $err);  //記錄錯誤

        $maxSize = (int)(QR_PNG_MAXIMUM_SIZE / (count($tab)+2*$this->margin));
        // echo "run Qrencode::maxSize....".$maxSize."<br/>".QR_PNG_MAXIMUM_SIZE."<br/>";

        QRimage::png($tab, $outfile, min(max(1, $this->size), $maxSize), $this->margin,$saveandprint);

    } catch (Exception $e) {
        //記錄資訊
        QRtools::log($outfile, $e->getMessage());
    }
}

4、生成二維碼

//QRencode
public function encode($intext, $outfile = false) 
{
     //echo "run Qrencode::encode....<br/>";
    $code = new QRcode();
    if($this->eightbit) {
        $code->encodeString8bit($intext, $this->version, $this->level);
    } else {
        $code->encodeString($intext, $this->version, $this->level, $this->hint, $this->casesensitive);
    }
    // QRtools::markTime('after_encode');

    $binarized = QRtools::binarize($code->data);
    if ($outfile!== false) {
        file_put_contents($outfile, join("\n", $binarized));
    }

    return $binarized;
}

5、輸出圖片

//QRimage
 public static function png($frame, $filename = false, $pixelPerPoint = 4, $outerFrame = 4,$saveandprint=FALSE) 
  {
       $image = self::image($frame, $pixelPerPoint, $outerFrame);

       if ($filename === false) {
           Header("Content-type: image/png");
           ImagePng($image);
       } else {
           if($saveandprint===TRUE){
               ImagePng($image, $filename);
               header("Content-type: image/png");
               ImagePng($image);
           }else{
               ImagePng($image, $filename);
           }
       }

       ImageDestroy($image);
   }