PHP 生成条形码

<?phpclass BarCode128 { ???const STARTA = 103; ???const STARTB = 104; ???const STARTC = 105; ???const STOP = 106; ???private $unit_width = 2; //单位宽度 缺省1个象素 ???private $is_set_height = false; ???private $width = -1; ???private $heith = 70; ???private $quiet_zone = 6; ???private $font_height = 15; ???private $font_type = 5; ???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 $text =‘‘; ???public function __construct() ???{ ???????????} ???public function setUnitWidth($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); ???????????????} ???????????} ???????} ???????catch(Exception $ex) ???????{ ???????????errorlog(‘die‘,$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 $this->height; ???} ???public function createBarCode($code=‘‘,$text=‘‘,$file_name=null,$type=‘B‘, $image_type =‘png‘) ???{ ???????if (in_array($type,array(‘A‘,‘B‘,‘C‘))) ???????????$this->setType($type); ???????else ???????????$this->setType(‘B‘); ???????if ($code !==‘‘) ???????????$this->setCode($code); ???????if ($text !==‘‘) ???????????$this->setText($text); ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????$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, 1, $ex, 60, $this->color); // 原 ImageFilledRectangle($this->image, $sx, $sy, $ex,$ey, $this->color); $sy 改为1 条形码距离顶部1距离 ???$ey 改为60 条形码高度60 ???????????$sx =$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*$t_x,65,$this->text{$i},$this->color); // 原 imagechar($this->image,$this->font_type,6*$this->unit_width +$t_sx +$i*$t_x,0,$this->text{$i},$this->color); 将0改为65 文本距离顶部65距离 ???????} ???????if (!$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; ???????} ???}}$barcode = new BarCode128();//第一个参数为用来生成条形码的字符串，第二个参数为条形码下面显示的字符内容，第三个为生成的路径文件名称$barcode->createBarCode(‘SP89867‘,‘SP8986712‘,‘test.png‘);?>