用php生成EAN_13标准的条形码
这连天看见有人法帖讨论如很用php生成条形码,所以就用了点时间学了学EAN_13标准.EAN_13标准是广泛使用的条码编码标准,主要运用在商品流通方面,比如我们看到的商品上的条码就是这种编码标准,还有图书上的编码标准也是这种编码标准.
1 v% Z& K) f4 d& G8 m, } 下面的就是我的一段代码生成的是EAN_13标准的条码,需要php+gd 环境5 {+ T0 [4 `0 b+ J5 t8 p
<?
0 b* J" B2 \" e/ D8 n$ B$ xfunction EAN_13($code) {: ~; g7 |+ Y8 E6 \* a
//一个单元的宽度
+ X% t4 L: i, w G8 H. R $lw = 2;1 h! m! ^$ a; L- w h9 n( |
//条码高 ; v6 ~% w7 Q# `8 a. y4 W1 S
$hi = 100;1 k S0 @$ C, ?2 h* o7 q& z" Y4 o
// the guide code is no coding,is used to show the left part coding type//9 n% G2 x/ t/ T3 N
// Array guide is used to record the EAN_13 is left part coding type//
$ B5 ]% s4 w: A9 E, R; g) { $Guide = array(1=>;'AAAAAA','AABABB','AABBAB','ABAABB','ABBAAB','ABBBAA','ABABAB','ABABBA','ABBABA');/ V$ K( }3 X. u& f: p6 z. w
$Lstart ='101';
7 W6 ]/ w/ E8 P4 T# E! O- v $Lencode = array("A" =>; array('0001101','0011001','0010011','0111101','0100011','0110001','0101111','0111011','0110111','0001011'),: u; F }0 }0 q3 Z
"B" =>; array('0100111','0110011','0011011','0100001','0011101','0111001','0000101','0010001','0001001','0010111'));4 |1 T2 E5 y! h, w% w) C
$Rencode = array('1110010','1100110','1101100','1000010','1011100',7 h5 f% T) T' `8 W$ {4 u% Y( s
'1001110','1010000','1000100','1001000','1110100'); 3 z) t3 n0 y+ o, c! s' \& X; v
b6 p& a: F O3 p- p: }8 ? $center = '01010';0 W7 @- e g3 g' t) ~
3 [0 H0 U+ d7 z2 E9 Y; | $ends = '101';8 p* U+ V! i5 V' h$ u8 V8 \/ c
if ( strlen($code) != 13 )
/ |* U) _6 l- t' N! W7 I; F { die("UPC-A Must be 13 digits."); }
9 o$ B; {7 s9 e$lsum =0;5 c) d, m6 |# N9 c2 S4 n; Y
$rsum =0;. w- ?1 v1 z) _2 N- M7 a% v
for($i=0;$i<(strlen($code)-1);$i++)
$ }' t' _ C9 E% [, j {
# ~$ f% a- V8 h* B- p if($i % 2)3 Q5 t- ]. w. ~; Y. l& T, P( m+ O
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// $odd += $ncode[$x]( o$ Z6 X2 I; v. `0 m. Q$ E
$lsum +=(int)$code[$i];
$ T j- ~; m. i# z; {2 _; g }else{
, q3 [. K7 [5 {0 _! F6 W $rsum +=(int)$code[$i];
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$tsum = $lsum*3 + $rsum;
9 I2 m& i0 F* Z [, |- E& a if($code[12] != (10-($tsum % 10)))0 J( j( p0 e. i4 {2 c9 [& j4 Z
{
4 u' H( j" Q+ f die("the code is bad!");
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// echo $Guide[$code[0]];; C) c1 |& _# l. `. n) L$ e* L
$barcode = $Lstart;3 E! E% z3 @: _( ~$ p b
for($i=1;$i<=6;$i++)0 j3 g, k+ h( r* P
{
7 [3 D6 @' s/ q: m3 G$ P $barcode .= $Lencode [$Guide[$code[0]][($i-1)]] [$code[$i]];
- q9 L; t! S) U2 ^% k D# [ }
1 q4 M; A S$ f/ f $barcode .= $center;
$ \# U: M I6 b
( Y, U' Q0 _% Z2 v! C+ r for($i=7;$i<13;$i++)% S# m! L! `8 s) b8 V q+ |9 y
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$barcode .= $Rencode[$code[($i)]] ;1 Z5 N" h$ ]( M* b' j
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$barcode .= $ends;! p' ], ], D8 G; V4 o
# G- v* p. R- p% L $img = ImageCreate($lw*95+60,$hi+30);
0 S' a& c' Q2 ?6 D $fg = ImageColorAllocate($img, 0, 0, 0);4 g* j, N& x/ H% o |' d" D
$bg = ImageColorAllocate($img, 255, 255, 255);
+ r% O/ E* ? ]( B3 T4 [ ImageFilledRectangle($img, 0, 0, $lw*95+60, $hi+30, $bg);
* N% S9 C& w( p& I $shift=10;
. k! O' J/ z3 T* \ for ($x=0;$x<strlen($barcode);$x++) {
h& i; V2 [0 v/ W, L if (($x<4) || ($x>;=45 && $x<50) || ($x >;=92))
( u9 D# {* d; `# @! o! D { x$ |+ H$ Z3 W
$sh=10; ; C5 }6 ]2 A0 X O9 i. }: H
} else { ) I% K5 j: g9 N* l. `1 a
$sh=0;
/ p+ O, X9 ^4 Y+ [ }
( m' ^3 T5 j. L$ J if ($barcode[$x] == '1') # a; `, N+ D6 ]8 U6 V K5 ]
{ ) }0 t j, p# g& |8 y/ C
$color = $fg;
# @) R5 f4 q& A8 t } else {
4 _: R0 ^5 ?& M6 M2 R $color = $bg; 0 [+ I# k! K4 ?& @+ d. s
}
* ~$ ~! ?5 v) z' E: u6 W ImageFilledRectangle($img, ($x*$lw)+30,5,($x+1)*$lw+29,$hi+5+$sh,$color);
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/* Add the Human Readable Label */
- t" ?0 T; _ p: K& N6 S; ]0 Q$ [ ImageString($img,5,20,$hi+5,$code[0],$fg);
" s# E7 ]( [* i! ] for ($x=0;$x<6;$x++) { d; q1 Z( `! c. v
ImageString($img,5,$lw*(8+$x*6)+30,$hi+5,$code[$x+1],$fg);. u6 N% B: H! W/ n; G6 v
ImageString($img,5,$lw*(53+$x*6)+30,$hi+5,$code[$x+7],$fg);
- c* W* L0 ]3 s4 x4 p7 ~- ]$ c }# ?0 ]) B+ }( k% r! r4 _
// ImageString($img,4,$lw*95+17,$hi-5,$code[12],$fg);
' o; L! f6 M% R/ K. _! K% w8 a /* Output the Header and Content. */$ o$ v9 r- W0 v6 B9 b
header("Content-Type: image/png");
( w2 U: U. y# Y' S. P- Y ImagePNG($img);
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7 B5 Z; Q1 \2 N4 S5 F6 V& \& o7 x2 REAN_13('6901028055048');
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+ x5 b4 L- V( |) c) \( w- r?>;
