php生成条形码就是必须生成图片了,在php生成图片我们就必须用到gd库来实现了,所以你得找到你的将php.ini文件找到extension=php_gd2.dll 去掉前面的;,你就可以使用些实例了.

php生成条形码代码如下:

1. class cd_barra
2. {
3. var $file;
4. var $into;
5. var $cd_barras = array(0=>"00110",1=>"10001",2=>"01001",3=>"11000",4=>"00101",
6. 5=>"10100",6=>"01100",7=>"00011",8=>"10010",9=>"01010"
7. );
8. function cd_barra($value,$files,$into=1) {
9. $lower = 1 ; $hight = 55;
10. $this->into = $into;
11. for($count1=9;$count1>=0;$count1--){
12. for($count2=9;$count2>=0;$count2--){
13. $count = ($count1 * 10) + $count2 ;
14. $text = "" ;
15. for($i=1;$i<6;$i++){
16. $text .= substr($this->cd_barras[$count1],($i-1),1) . substr($this->cd_barras[$count2],($i-1),1);
17. }
18. $this->cd_barras[$count] = $text;
19. }
20. }
21. //$img = imagecreate($lower*95+300,$hight+30);
22. $img = imagecreate(145,55);
23. //$img = imagecreate(395,73);
24. $cl_black = imagecolorallocate($img, 0, 0, 0);
25. $cl_white = imagecolorallocate($img, 255, 255, 255);
26. imagefilledrectangle($img, 0, 0, $lower*95+1000, $hight+30, $cl_white);
27. imagefilledrectangle($img, 1,1,1,53,$cl_black);
28. imagefilledrectangle($img, 2,1,2,53,$cl_white);
29. imagefilledrectangle($img, 3,1,3,53,$cl_black);
30. imagefilledrectangle($img, 4,1,4,53,$cl_white);
31. $thin = 1 ;
32. if(substr_count(strtoupper($_server['server_software']),"win32")){
33. //o tamanho para windows tem que ser 3
34. // for windows, the wide bar has = 3
35. $wide = 3;
36. } else {
37. $wide = 2.72;
38. }
39. $pos = 5 ;
40. $text = $value ;
41. if((strlen($text) % 2) <> 0){
42. $text = "0" . $text;
43. }
44. while (strlen($text) > 0) {
45. $i = round($this->barra_left($text,2));
46. $text = $this->barra_right($text,strlen($text)-2);
47. $f = $this->cd_barras[$i];
48. for($i=1;$i<11;$i+=2){
49. if (substr($f,($i-1),1) == "0") {
50. $f1 = $thin ;
51. }else{
52. $f1 = $wide ;
53. }
54. imagefilledrectangle($img, $pos,1,$pos-1+$f1,53,$cl_black) ;
55. $pos = $pos + $f1 ;
56. if (substr($f,$i,1) == "0") {
57. $f2 = $thin ;
58. }else{
59. $f2 = $wide ;
60. }
61. imagefilledrectangle($img, $pos,1,$pos-1+$f2,53,$cl_white) ;
62. $pos = $pos + $f2 ;
63. }
64. }
65. imagefilledrectangle($img, $pos,1,$pos-1+$wide,53,$cl_black);
66. $pos=$pos+$wide;
67. imagefilledrectangle($img, $pos,1,$pos-1+$thin,53,$cl_white);
68. $pos=$pos+$thin;
69. imagefilledrectangle($img, $pos,1,$pos-1+$thin,53,$cl_black);
70. $pos=$pos+$thin;
71. $this->put_img($img,$files);
72. }
73. function barra_left($input,$comp){
74. return substr($input,0,$comp);
75. }
76. function barra_right($input,$comp){
77. return substr($input,strlen($input)-$comp,$comp);
78. }
79. function put_img($image,$file){
80. if($this->into){
81. imagegif($image,$file);
82. }
83. else {//开源代码phpfensi.com
84. header("content-type: image/gif");
85. imagegif($image);
86. }
87. imagedestroy($image);
88. }
89. }

调用方法,代码如下:

1. <?php
2. include("codes.php");
3. $new_code = new cd_barra("1234567890","a.gif",1);
4. ?>
5. <img src="a.gif" />