php生成code128条形码

php生成code128条形码

效果图:
<?php <br /> <br> class BarCode128 {<br>     const STARTA = 103;<br>     const STARTB = 104;<br>     const STARTC = 105;<br>     const STOP = 106;<br>     private $unit_width = 1; //单位宽度 缺省1个象素<br>     private $is_set_height = false;<br>     private $width = -1;<br>     private $heith = 35;<br>     private $quiet_zone = 6;<br>     private $font_height = 15;<br>     private $font_type = 4;<br>     private $color =0x000000;<br>     private $bgcolor =0xFFFFFF;<br>     private $image = null;<br>     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");<br>     private $valid_code = -1;<br>     private $type ='B';<br>     private $start_codes =array('A'=>self::STARTA,'B'=>self::STARTB,'C'=>self::STARTC);<br>     private $code ='';<br>     private $bin_code ='';<br>     private $text ='';<br> <br>     public function __construct($code='',$text='',$type='B')<br>     {<br>         if (in_array($type,array('A','B','C')))<br>             $this->setType($type);<br>         else<br>             $this->setType('B');<br>         if ($code !=='')<br>             $this->setCode($code);<br>         if ($text !=='')<br>             $this->setText($text);<br>     }<br>     public function setUnitWidth($unit_width)<br>     {<br>         $this->unit_width = $unit_width;<br>         $this->quiet_zone = $this->unit_width*6;<br>         $this->font_height = $this->unit_width*15;<br>         if (!$this->is_set_height)<br>         {<br>             $this->heith = $this->unit_width*35;<br>         }<br>     }<br>     public function setFontType($font_type)<br>     {<br>         $this->font_type = $font_type;<br>     }<br>     public function setBgcolor($bgcoloe)<br>     {<br>         $this->bgcolor = $bgcoloe;<br>     }<br>     public function setColor($color)<br>     {<br>         $this->color = $color;<br>     }<br>     public function setCode($code)<br>     {<br>         if ($code !='')<br>         {<br>             $this->code= $code;<br>             if ($this->text ==='')<br>                 $this->text = $code;<br>         }<br>     }<br>     public function setText($text)<br>     {<br>         $this->text = $text;<br>     }<br> <br>     public function setType($type)<br>     {<br>         $this->type = $type;<br>     }<br>     public function setHeight($height)<br>     {<br>         $this->height = $height;<br>         $this->is_set_height = true;<br>     }<br> <br>     private function getValueFromChar($ch)<br>     {<br>         $val = ord($ch);<br>         try<br>         {<br>             if ($this->type =='A')<br>             {<br>                 if ($val > 95)<br>                     throw new Exception(' illegal barcode character '.$ch.' for code128A in '.__FILE__.' on line '.__LINE__);<br>                 if ($val                      $val += 64;<br>                 else<br>                     $val -=32;<br>             }<br>             elseif ($this->type =='B')<br>             {<br>                 if ($val  127)<br>                     throw new Exception(' illegal barcode character '.$ch.' for code128B in '.__FILE__.' on line '.__LINE__);<br>                 else<br>                     $val -=32;<br>             }<br>             else<br>             {<br>                 if (!is_numeric($ch) || (int)$ch  99)<br>                     throw new Exception(' illegal barcode character '.$ch.' for code128C in '.__FILE__.' on line '.__LINE__);<br>                 else<br>                 {<br>                     if (strlen($ch) ==1)<br>                         $ch .='0';<br>                     $val = (int)($ch);<br>                 }<br>             }<br>         }<br>         catch(Exception $ex)<br>         {<br>             errorlog('die',$ex->getMessage());<br>         }<br>         return $val;<br>     }<br>     private function parseCode()<br>     {<br>         $this->type=='C'?$step=2:$step=1;<br>         $val_sum = $this->start_codes[$this->type];<br>         $this->width = 35;<br>         $this->bin_code = $this->codes[$val_sum];<br>         for($i =0;$i<strlen>code);$i+=$step)<br>         {<br>             $this->width +=11;<br>             $ch = substr($this->code,$i,$step);<br>             $val = $this->getValueFromChar($ch);<br>             $val_sum += $val;<br>             $this->bin_code .= $this->codes[$val];<br>         }<br>         $this->width *=$this->unit_width;<br>         $val_sum = $val_sum%103;<br>         $this->valid_code = $val_sum;<br>         $this->bin_code .= $this->codes[$this->valid_code];<br>         $this->bin_code .= $this->codes[self::STOP];<br>     }<br>     public function getValidCode()<br>     {<br>         if ($this->valid_code == -1)<br>             $this->parseCode();<br>         return $this->valid_code;<br>     }<br>     public function getWidth()<br>     {<br>         if ($this->width ==-1)<br>             $this->parseCode();<br>         return $this->width;<br>     }<br> <br>     public function getHeight()<br>     {<br>         if ($this->width ==-1)<br>             $this->parseCode();<br>         return $this->height;<br>     }<br> <br>     public function createBarCode($image_type ='png',$file_name=null)<br>     {<br>         $this->parseCode();<br>         $this->image = ImageCreate($this->width+2*$this->quiet_zone,$this->heith + $this->font_height);<br>         $this->bgcolor = imagecolorallocate($this->image,$this->bgcolor >> 16,($this->bgcolor >> 8)&0x00FF,$this->bgcolor & 0xFF);<br>         $this->color = imagecolorallocate($this->image,$this->color >> 16,($this->color >> 8)&0x00FF,$this->color & 0xFF);<br>         ImageFilledRectangle($this->image, 0, 0, $this->width + 2*$this->quiet_zone,$this->heith + $this->font_height, $this->bgcolor);<br>         $sx = $this->quiet_zone;<br>         $sy = $this->font_height -1;<br>         $fw = 10; //編號為2或3的字體的寬度為10，為4或5的字體寬度為11<br>         if ($this->font_type >3)<br>         {<br>             $sy++;<br>             $fw=11;<br>         }<br>         $ex = 0;<br>         $ey = $this->heith + $this->font_height - 2;<br>         for($i=0;$i<strlen>bin_code);$i++)<br>         {<br>             $ex = $sx + $this->unit_width*(int) $this->bin_code{$i} -1;<br>             if ($i%2==0)<br>                 ImageFilledRectangle($this->image, $sx, $sy, $ex,$ey, $this->color);<br>             $sx =$ex + 1;<br>         }<br>         $t_num = strlen($this->text);<br>         $t_x = $this->width/$t_num;<br>         $t_sx = ($t_x -$fw)/2;        //目的为了使文字居中平均分布<br>         for($i=0;$i         {<br>             imagechar($this->image,$this->font_type,6*$this->unit_width +$t_sx +$i*$t_x,0,$this->text{$i},$this->color);<br>         }<br>         if (!$file_name)<br>         {<br>             header("Content-Type: image/".$image_type);<br>         }<br>         switch ($image_type)<br>         {<br>             case 'jpg':<br>             case 'jpeg':<br>                 Imagejpeg($this->image,$file_name);<br>                 break;<br>             case 'png':<br>                 Imagepng($this->image,$file_name);<br>                 break;<br>             case 'gif':<br>                 break;<br>                 Imagegif($this->image,$file_name);<br>             default:<br>                 Imagepng($this->image,$file_name);<br>                 break;<br>         }<br>     }<br> }<br> <br> $barcode = new BarCode128('88888888');<br> $barcode->createBarCode();<br> 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