php產生code128條碼的方法-php教程-PHP中文網

首頁

後端開發

php教程

php產生code128條碼的方法

墨辰丷

May 19, 2018 am 11:01 AM

php條碼

這篇文章主要介紹了php實作產生code128條碼的方法,結合完整實例形式給出了php條碼產生類別的定義與使用方法,需要的朋友可以參考下

本文實例講述了php實作產生code128條碼的方法。分享給大家供大家參考，具體如下：

效果圖:

<?php
class BarCode128 {
  const STARTA = 103;
  const STARTB = 104;
  const STARTC = 105;
  const STOP = 106;
  private $unit_width = 1; //单位宽度 缺省1个象素
  private $is_set_height = false;
  private $width = -1;
  private $heith = 35;
  private $quiet_zone = 6;
  private $font_height = 15;
  private $font_type = 4;
  private $color =0x000000;
  private $bgcolor =0xFFFFFF;
  private $image = null;
  private $codes = array("212222","222122","222221","121223","121322","131222","122213","122312","132212","221213","221312","231212","112232","122132","122231","113222","123122","123221","223211","221132","221231","213212","223112","312131","311222","321122","321221","312212","322112","322211","212123","212321","232121","111323","131123","131321","112313","132113","132311","211313","231113","231311","112133","112331","132131","113123","113321","133121","313121","211331","231131","213113","213311","213131","311123","311321","331121","312113","312311","332111","314111","221411","431111","111224","111422","121124","121421","141122","141221","112214","112412","122114","122411","142112","142211","241211","221114","413111","241112","134111","111242","121142","121241","114212","124112","124211","411212","421112","421211","212141","214121","412121","111143","111341","131141","114113","114311","411113","411311","113141","114131","311141","411131","211412","211214","211412","2331112");
  private $valid_code = -1;
  private $type =&#39;B&#39;;
  private $start_codes =array(&#39;A&#39;=>self::STARTA,&#39;B&#39;=>self::STARTB,&#39;C&#39;=>self::STARTC);
  private $code =&#39;&#39;;
  private $bin_code =&#39;&#39;;
  private $text =&#39;&#39;;
  public function __construct($code=&#39;&#39;,$text=&#39;&#39;,$type=&#39;B&#39;)
  {
    if (in_array($type,array(&#39;A&#39;,&#39;B&#39;,&#39;C&#39;)))
      $this->setType($type);
    else
      $this->setType(&#39;B&#39;);
    if ($code !==&#39;&#39;)
      $this->setCode($code);
    if ($text !==&#39;&#39;)
      $this->setText($text);
  }
  public function setUnitWidth($unit_width)
  {
    $this->unit_width = $unit_width;
    $this->quiet_zone = $this->unit_width*6;
    $this->font_height = $this->unit_width*15;
    if (!$this->is_set_height)
    {
      $this->heith = $this->unit_width*35;
    }
  }
  public function setFontType($font_type)
  {
    $this->font_type = $font_type;
  }
  public function setBgcolor($bgcoloe)
  {
    $this->bgcolor = $bgcoloe;
  }
  public function setColor($color)
  {
    $this->color = $color;
  }
  public function setCode($code)
  {
    if ($code !=&#39;&#39;)
    {
      $this->code= $code;
      if ($this->text ===&#39;&#39;)
        $this->text = $code;
    }
  }
  public function setText($text)
  {
    $this->text = $text;
  }
  public function setType($type)
  {
    $this->type = $type;
  }
  public function setHeight($height)
  {
    $this->height = $height;
    $this->is_set_height = true;
  }
  private function getValueFromChar($ch)
  {
    $val = ord($ch);
    try
    {
      if ($this->type ==&#39;A&#39;)
      {
        if ($val > 95)
          throw new Exception(&#39; illegal barcode character &#39;.$ch.&#39; for code128A in &#39;.__FILE__.&#39; on line &#39;.__LINE__);
        if ($val < 32)
          $val += 64;
        else
          $val -=32;
      }
      elseif ($this->type ==&#39;B&#39;)
      {
        if ($val < 32 || $val > 127)
          throw new Exception(&#39; illegal barcode character &#39;.$ch.&#39; for code128B in &#39;.__FILE__.&#39; on line &#39;.__LINE__);
        else
          $val -=32;
      }
      else
      {
        if (!is_numeric($ch) || (int)$ch < 0 || (int)($ch) > 99)
          throw new Exception(&#39; illegal barcode character &#39;.$ch.&#39; for code128C in &#39;.__FILE__.&#39; on line &#39;.__LINE__);
        else
        {
          if (strlen($ch) ==1)
            $ch .=&#39;0&#39;;
          $val = (int)($ch);
        }
      }
    }
    catch(Exception $ex)
    {
      errorlog(&#39;die&#39;,$ex->getMessage());
    }
    return $val;
  }
  private function parseCode()
  {
    $this->type==&#39;C&#39;?$step=2:$step=1;
    $val_sum = $this->start_codes[$this->type];
    $this->width = 35;
    $this->bin_code = $this->codes[$val_sum];
    for($i =0;$i<strlen($this->code);$i+=$step)
    {
      $this->width +=11;
      $ch = substr($this->code,$i,$step);
      $val = $this->getValueFromChar($ch);
      $val_sum += $val;
      $this->bin_code .= $this->codes[$val];
    }
    $this->width *=$this->unit_width;
    $val_sum = $val_sum%103;
    $this->valid_code = $val_sum;
    $this->bin_code .= $this->codes[$this->valid_code];
    $this->bin_code .= $this->codes[self::STOP];
  }
  public function getValidCode()
  {
    if ($this->valid_code == -1)
      $this->parseCode();
    return $this->valid_code;
  }
  public function getWidth()
  {
    if ($this->width ==-1)
      $this->parseCode();
    return $this->width;
  }
  public function getHeight()
  {
    if ($this->width ==-1)
      $this->parseCode();
    return $this->height;
  }
  public function createBarCode($image_type =&#39;png&#39;,$file_name=null)
  {
    $this->parseCode();
    $this->image = ImageCreate($this->width+2*$this->quiet_zone,$this->heith + $this->font_height);
    $this->bgcolor = imagecolorallocate($this->image,$this->bgcolor >> 16,($this->bgcolor >> 8)&0x00FF,$this->bgcolor & 0xFF);
    $this->color = imagecolorallocate($this->image,$this->color >> 16,($this->color >> 8)&0x00FF,$this->color & 0xFF);
    ImageFilledRectangle($this->image, 0, 0, $this->width + 2*$this->quiet_zone,$this->heith + $this->font_height, $this->bgcolor);
    $sx = $this->quiet_zone;
    $sy = $this->font_height -1;
    $fw = 10; //編號為2或3的字體的寬度為10，為4或5的字體寬度為11
    if ($this->font_type >3)
    {
      $sy++;
      $fw=11;
    }
    $ex = 0;
    $ey = $this->heith + $this->font_height - 2;
    for($i=0;$i<strlen($this->bin_code);$i++)
    {
      $ex = $sx + $this->unit_width*(int) $this->bin_code{$i} -1;
      if ($i%2==0)
        ImageFilledRectangle($this->image, $sx, $sy, $ex,$ey, $this->color);
      $sx =$ex + 1;
    }
    $t_num = strlen($this->text);
    $t_x = $this->width/$t_num;
    $t_sx = ($t_x -$fw)/2;    //目的为了使文字居中平均分布
    for($i=0;$i<$t_num;$i++)
    {
      imagechar($this->image,$this->font_type,6*$this->unit_width +$t_sx +$i*$t_x,0,$this->text{$i},$this->color);
    }
    if (!$file_name)
    {
      header("Content-Type: image/".$image_type);
    }
    switch ($image_type)
    {
      case &#39;jpg&#39;:
      case &#39;jpeg&#39;:
        Imagejpeg($this->image,$file_name);
        break;
      case &#39;png&#39;:
        Imagepng($this->image,$file_name);
        break;
      case &#39;gif&#39;:
        break;
        Imagegif($this->image,$file_name);
      default:
        Imagepng($this->image,$file_name);
        break;
    }
  }
}
$barcode = new BarCode128(&#39;88888888&#39;);
$barcode->createBarCode();
?>

##相關推薦：

PHP基於phpqrcode類產生二維碼步驟詳解

#PHP中opcode快取使用詳解

CodeIgniter使用redis步驟詳解

以上是php產生code128條碼的方法的詳細內容。更多資訊請關注PHP中文網其他相關文章！

陳述

本文內容由網友自願投稿，版權歸原作者所有。本站不承擔相應的法律責任。如發現涉嫌抄襲或侵權的內容，請聯絡admin@php.cn

PHP的目的：構建動態網站Apr 15, 2025 am 12:18 AM

PHP用於構建動態網站，其核心功能包括：1.生成動態內容，通過與數據庫對接實時生成網頁；2.處理用戶交互和表單提交，驗證輸入並響應操作；3.管理會話和用戶認證，提供個性化體驗；4.優化性能和遵循最佳實踐，提升網站效率和安全性。

PHP：處理數據庫和服務器端邏輯Apr 15, 2025 am 12:15 AM

PHP在數據庫操作和服務器端邏輯處理中使用MySQLi和PDO擴展進行數據庫交互，並通過會話管理等功能處理服務器端邏輯。 1）使用MySQLi或PDO連接數據庫，執行SQL查詢。 2）通過會話管理等功能處理HTTP請求和用戶狀態。 3）使用事務確保數據庫操作的原子性。 4）防止SQL注入，使用異常處理和關閉連接來調試。 5）通過索引和緩存優化性能，編寫可讀性高的代碼並進行錯誤處理。

您如何防止PHP中的SQL注入？（準備的陳述，PDO）Apr 15, 2025 am 12:15 AM

在PHP中使用預處理語句和PDO可以有效防範SQL注入攻擊。 1)使用PDO連接數據庫並設置錯誤模式。 2)通過prepare方法創建預處理語句，使用佔位符和execute方法傳遞數據。 3)處理查詢結果並確保代碼的安全性和性能。

PHP和Python：代碼示例和比較Apr 15, 2025 am 12:07 AM

PHP和Python各有優劣，選擇取決於項目需求和個人偏好。 1.PHP適合快速開發和維護大型Web應用。 2.Python在數據科學和機器學習領域佔據主導地位。

PHP行動：現實世界中的示例和應用程序Apr 14, 2025 am 12:19 AM

PHP在電子商務、內容管理系統和API開發中廣泛應用。 1)電子商務：用於購物車功能和支付處理。 2)內容管理系統：用於動態內容生成和用戶管理。 3)API開發：用於RESTfulAPI開發和API安全性。通過性能優化和最佳實踐，PHP應用的效率和可維護性得以提升。

PHP：輕鬆創建交互式Web內容Apr 14, 2025 am 12:15 AM

PHP可以輕鬆創建互動網頁內容。 1)通過嵌入HTML動態生成內容，根據用戶輸入或數據庫數據實時展示。 2)處理表單提交並生成動態輸出，確保使用htmlspecialchars防XSS。 3)結合MySQL創建用戶註冊系統，使用password_hash和預處理語句增強安全性。掌握這些技巧將提升Web開發效率。