php如何生成条形码方法详解Faker安装和使用方法

这篇文章主要介绍了php实现生成code128条形码的方法,结合完整实例形式给出了php条形码生成类的定义与使用方法,需要的朋友可以参考下

本文实例讲述了php实现生成code128条形码的方法。分享给大家供大家参考,具体如下:

效果图:

<?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 ='B';
  private $start_codes =array'A'=>self::STARTA,'B'=>self::STARTB,'C'=>self::STARTC);
  private $code ='';
  private $bin_code ='';
  private $text ='';
  public function __construct$code='',$text='',$type='B')
  {
    if in_array$type,array'A','B','C')))
      $this->setType$type);
    else
      $this->setType'B');
    if $code !=='')
      $this->setCode$code);
    if $text !=='')
      $this->setText$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 !='')
    {
      $this->code= $code;
      if $this->text ==='')
        $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 =='A')
      {
        if $val > 95)
          throw new Exception' illegal barcode character '.$ch.' for code128A in '.__FILE__.' on line '.__LINE__);
        if $val < 32)
          $val += 64;
        else
          $val -=32;
      }
      elseif $this->type =='B')
      {
        if $val < 32 || $val > 127)
          throw new Exception' illegal barcode character '.$ch.' for code128B in '.__FILE__.' on line '.__LINE__);
        else
          $val -=32;
      }
      else
      {
        if !is_numeric$ch) || int)$ch < 0 || int)$ch) > 99)
          throw new Exception' illegal barcode character '.$ch.' for code128C in '.__FILE__.' on line '.__LINE__);
        else
        {
          if strlen$ch) ==1)
            $ch .='0';
          $val = int)$ch);
        }
      }
    }
    catchException $ex)
    {
      errorlog'die',$ex->getMessage));
    }
    return $val;
  }
  private function parseCode)
  {
    $this->type=='C'?$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 ='png',$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 $image_type)
    {
      case 'jpg':
      case 'jpeg':
        Imagejpeg$this->image,$file_name);
        break;
      case 'png':
        Imagepng$this->image,$file_name);
        break;
      case 'gif':
        break;
        Imagegif$this->image,$file_name);
      default:
        Imagepng$this->image,$file_name);
        break;
    }
  }
}
$barcode = new BarCode128'88888888');
$barcode->createBarCode);
?>

附加一个强大的条码生成扩展包:
http://www.barcodebakery.com/

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