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无限级树状图可以说是无限级栏目的一个显著特征,我们接下来就来看看两种不同的写法。
: z$ \9 X0 ~6 N% |2 a6 Y一.数据库设计; B7 c } p' f% [- [" s
- CREATE TABLE `bg_cate` (" ^7 @- Z7 n* A) C. F# ]
- `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,7 {" w$ Q. v$ b# ~8 J
- `cate_ParentId` int(30) unsigned DEFAULT '0',
( M: a' { g7 W3 d/ E6 ` - `cate_Name` varchar(100) NOT NULL,
, }, R. k+ m3 v( }; d+ A - `cate_Intro` varchar(500) DEFAULT NULL,
$ Y R! w t, a; p2 H; W* d J - `cate_Order` int(30) unsigned DEFAULT '0',5 V9 `5 y; Y9 ^) u4 r* S
- `cate_Icon` varchar(100) DEFAULT NULL,
' Z) ] U i3 B3 I7 m9 D7 x - PRIMARY KEY (`cate_Id`)
$ O8 o' _ P$ Q; A$ B: c* z - ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;
% @4 z3 j8 i: n" t+ J& Q - --
t/ i! [, l2 ?" w/ O! F$ y - -- 导出表中的数据 `bg_cate`
! T2 U$ X |1 s. c1 m - --
7 s7 C ] ], i; ?1 Z- ` - INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES# {. Q5 T. D" y/ P" b
- (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'),
+ f2 V4 P- x0 U/ t7 H& G3 j' K0 u - (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif'),
6 d+ v/ f: R7 r% b; ~/ c - (2, 0, '技术学习', '平时学习的一些笔记,欢迎批评指正。', 0, 'icons/18.gif'),
5 W; v A v# J3 V5 i; O7 k - (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'),
2 j3 F* o t+ n - (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),
9 P+ e# Y, V1 c7 `8 C F& e7 M, n - (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),) a; D( b* D) ~4 N
- (8, 2, 'html', 'html学习', 0, 'icons/1.gif'),
1 ~, @5 A \( ^/ ?5 [' K1 F - (9, 2, 'css', 'css学习', 0, 'icons/1.gif')," x! q7 {' @! d0 j1 B3 R( O
- (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),2 ?( q u$ m$ Z4 y5 E) i+ }4 S
- (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),
3 A2 o3 g6 `8 _ - (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),
4 i0 {0 W1 \9 P - (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),$ D% F n& d* s: E
- (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif'),9 _9 p3 u% K. }/ B. W: J
- (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'),
7 N( e" t' Z! [) @) ]* R - (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),
- m9 F7 B/ q6 W& |" f: | - (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),
3 p& n. l2 }6 v; C& ], ^: Z - (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif'),: w2 N1 K* Z2 h( e0 P
- (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'),. w1 [1 g) ^2 d1 ]9 p+ I0 A
- (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif'),) J$ q% f) v7 k& |+ y
- (21, 19, '学习', '学习', 0, 'icons/1.gif'),9 m& x% a. E5 [$ \+ L# J9 o# C
- (22, 19, '运动', '运动', 0, 'icons/16.gif'),) O# \; U& w. q8 @' v0 {* y
- (23, 19, '旅游', '旅游', 0, 'icons/24.gif'),
5 g# z; F) J) e2 e8 U3 Y - (24, 22, '排球', '排球', 0, 'icons/9.gif'),
" ?: }5 D* `2 H+ ^) l: u2 ? - (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),
L, A' L! A: f - (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),/ N3 t4 o. f! ?* E8 L0 h
- (27, 22, '乒乓球', '乒乓球', 0, 'icons/9.gif');
复制代码 二.到数据库取数据,放到数组。
& Y: ^! v; b6 d- Q/ B8 I- require_once './classes/MyDB.php';
3 {, H7 l! u! x: p: ? - $con = MyDB::singleton();
' E" c" M7 j' Q3 Q) ]7 w - $sql = <<<SQL+ I& T. U4 m( J9 {# V( I
- select * from bg_cate cate" {: I. F1 ^ [8 b: k
- SQL;6 L% a( S6 z, J7 J$ q% K) q
- $data = $con->getAll($sql);* j1 |$ H5 r9 O# c' l- }
- //print_r($data);
复制代码 数据库操作我用的是pear类库。
0 G5 V4 j" y; |' |0 x6 C最后的$data的数据格式如下:, p8 F3 K$ \4 \9 H
- Array9 z+ `: I; I% i6 d8 L- g
- ($ I: T& S; X. e" z3 q
- [0] => Array
1 l: O1 k4 M2 n# ? - (
) s9 f1 `% a3 ^+ E - [cate_Id] => 4& J2 ]' A/ Z/ y
- [cate_ParentId] => 0
$ m; D" ]3 q P( r' ~/ J' ? - [cate_Name] => 往事如风
8 X' c- v. h5 q% }1 B0 l" [6 C) f - [cate_Intro] => 记录往事
& y8 A. _/ V8 ^2 Y, v! X - [cate_Order] => 08 U: A, S3 n" l" Y% g
- [cate_Icon] => icons/6.gif! ]+ ~! S/ C( z+ r
- )
% M, U% w8 X: B A; P6 z4 c - [1] => Array
! A/ C) q. [7 ]+ c3 D7 u - (
: A$ A% d% w a - [cate_Id] => 5
`% H$ C8 y% f8 [+ h8 P - [cate_ParentId] => 0
0 k& O: D& S5 M0 @4 t - [cate_Name] => 水煮三国: c2 B/ y, G+ x" d' O- H* A6 }
- [cate_Intro] => 品位三国智慧* {6 ^ T2 _+ K( j0 |
- [cate_Order] => 0/ E& Z/ U! o$ _0 f7 j# K2 M8 v) |
- [cate_Icon] => icons/3.gif
5 l( D1 s9 o2 b7 n t2 D( E - )
复制代码 三.把上一步的数据转为树型状的数组& ?/ h V3 U+ Y- U
代码如下:8 W+ W) l+ j6 w
- function getTree($data, $pId)
9 M4 M: l' f5 z! A$ V' Z - {# y/ [5 A4 [! l1 e
- $tree = '';0 k& l: B6 q* w+ p( O" E
- foreach($data as $k => $v)/ L4 R0 p7 k! }# r. |
- {& Z) [3 P* Y* O! }7 f! m2 J* Z
- if($v['cate_ParentId'] == $pId)
! F" [: c& d& |) a5 z/ v - { //父亲找到儿子4 N& ^0 t9 D; {" t. `: {* i
- $v['cate_ParentId'] = getTree($data, $v['cate_Id']);1 I2 m% g8 Y0 i; b# W- E
- $tree[] = $v;
# F) z# w% a$ q' q5 F$ ~# K - //unset($data[$k]);
0 Q% ]) \! q2 m# Q - }
' l" t% {: d9 J1 b - }; o4 `9 X/ X" T# ^7 s
- return $tree;
6 _7 A& _/ D* h6 r' D i$ { - }
2 |* _7 Q e8 b. g+ ? - $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:# _1 ?% s/ D, H9 e; W _
- Array) U% Y+ y- b7 y
- (2 R, X# g% h: j* P0 M
- [0] => Array
# o4 e; } B/ X) G - (( n, X* v; p- ]* C9 j" c. A# L& c
- [cate_Id] => 4; @- i8 ] n* v% G
- [cate_ParentId] =>( T l1 a+ g: E: z7 G( R& }
- [cate_Name] => 往事如风
# u. x+ x1 f7 Z, K; D3 H$ S( n - [cate_Intro] => 记录往事
) J" }, J! Z0 y! z2 d$ h; p - [cate_Order] => 0$ q+ {: c& h! q
- [cate_Icon] => icons/6.gif
1 j# V- }7 u' n6 n$ Z, R - )3 j2 n7 [: V( Z+ p" O
- [1] => Array4 j. R G7 z$ }
- (- l: O3 Z9 Q V0 X
- [cate_Id] => 5+ i' M& W' h0 ]: S
- [cate_ParentId] =>
* I' D& d% \* u! n8 m n; [ - [cate_Name] => 水煮三国
7 {& @; I! q& l - [cate_Intro] => 品位三国智慧: e5 x6 B2 Z. f# q
- [cate_Order] => 0
1 V6 b' W1 W1 A- [; L9 O - [cate_Icon] => icons/3.gif
# m, [) y& ~9 p# M8 B# T5 h% k - )
4 S1 I! R+ ^; S+ J, B# o - [2] => Array/ F' w; u: l9 M& i
- (/ n3 f+ h/ W) K6 m3 n
- [cate_Id] => 2& o9 V' f* D( }: S: H
- [cate_ParentId] => Array* F. D1 }/ _5 d7 V
- (
' U8 {% b) o: V9 K( j/ [ - [0] => Array
: R" R3 h: F K2 R, N/ c - (
+ n9 o1 p: P$ B7 [. F- Y - [cate_Id] => 8
9 V& q! v* o* [9 E* F2 t o - [cate_ParentId] =>
( m! @ F3 O r$ | - [cate_Name] => html+ n6 ~1 z0 C& u6 E" c
- [cate_Intro] => html学习
% K2 E S! P: F& E/ H - [cate_Order] => 0
) d% g- e2 Y0 `6 q. X - [cate_Icon] => icons/1.gif: @6 Y5 m9 {8 x& r" P0 \3 Z* h% e
- )
复制代码 四.把树型状数组转为html1 Y3 M( C% {. y4 C
代码如下:
8 k, B3 u! ^ Z) k- function procHtml($tree)
, |7 }1 Y- s$ T9 `3 Z - {
" F5 h; c& r o) l2 P( y/ Q. y8 H - $html = '';. O4 Y8 {& {& H: \; L
- foreach($tree as $t)
) Q2 K: {' |: N; P3 I4 A- P - {, D# z) a- c& @ g- l) V3 {( g
- if($t['cate_ParentId'] == '')
3 s9 C" n/ J2 J, a9 o/ B - {' B4 D* D* `- G- e4 ^9 f
- $html .= "<li>{$t['cate_Name']}</li>";
* ?: ?# b* ~. r4 D - }- i) R% d9 w( H7 U# p+ K
- else0 \- ?8 e5 i$ l0 X
- {
* @+ L6 k1 g+ ^" t2 ~ - $html .= "<li>".$t['cate_Name'];6 `; M. p" D/ h( E
- $html .= procHtml($t['cate_ParentId']);
6 L0 K, k- d' f. B/ R/ t1 D8 g. A - $html = $html."</li>"; s" C; M6 R7 I; Q; }) s. p/ p
- }# D& J4 u. \. X6 N3 n& a- q
- }, t, M/ I5 k- d2 I2 Y1 F* F
- return $html ? '<ul>'.$html.'</ul>' : $html ;
' W% [" s- L: Y5 v8 R - }
. h' d [) \7 ? - echo procHtml($tree);
复制代码 输出的html的代码格式为:
" \$ l- Z* v. }+ h0 ?9 c N" v( q- <ul>) M9 ^0 ?# _* q$ p' R" M
- <li>往事如风</li>1 ?- |$ G. U1 Q* G& b2 Z5 Z
- <li>水煮三国</li>
& s/ n! z) F3 Y* p3 T4 u- e/ W - <li>技术学习
+ Q5 s6 C$ {- O8 a6 b7 [6 {. k - <ul>
! {2 Z" `9 |. o - <li>html</li>8 k4 w/ k; e" A( i0 |! p: _
- <li>css</li>
; {" W% u2 r( _4 _; z Y - <li>php
7 p" U6 w/ r' C - <ul>
H8 [- f. F( {/ a7 t4 N r - <li>php基础知识</li>3 p. n# I; t% c$ k
- <li>oop</li>
" Y; ~& _! M4 N - <li>php安全</li>
复制代码 五.代码整合
! w0 g+ N$ m: r: ?7 K& r- function getTree($data, $pId)! _$ J6 r! d, g' u4 U+ q+ @- A
- {
2 v3 u4 [* O9 U D; N: }4 j0 A - $html = '';' ~+ f" A. [6 G% Z0 J
- foreach($data as $k => $v)
0 d; G/ y j9 {4 G! U9 ` - {: H7 ?$ Y$ M; n2 ? p& s" F( T4 J
- if($v['cate_ParentId'] == $pId)
2 F( j( L6 @/ y* I9 K - { //父亲找到儿子3 H G2 i( M. s; o
- $html .= "<li>".$v['cate_Name'];
1 ]3 X3 F, s% M, o - $html .= getTree($data, $v['cate_Id']);4 R% b6 Z& _" i7 P& z
- $html = $html."</li>";+ `$ y( m1 A9 t, {
- }! f. t3 R+ U0 v3 R) p2 K
- }3 V8 [; U% I, c+ P0 ?0 G
- return $html ? '<ul>'.$html.'</ul>' : $html ;
8 ?' n4 l5 g7 {. N7 @) S" V4 M' i/ h. E - }6 i; ]" j7 r, v8 ]0 k
- echo getTree($data, 0);
复制代码 六.增加CSS样式
- T" b* f# g# F5 ?; ]
& U% P3 O5 s0 M. P
& e! I% c$ V+ B% Y( N6 u第二种是从开源网站上看到的,非常非常的简介。
3 y6 ?- H2 n2 X4 }2 g- <?php4 j, {+ z+ J( e- t# C
-
1 O( ?0 |0 i% ~) c% H - function genTree5($items) { ) Z6 n5 i5 r0 ?% e6 A j# z
- foreach ($items as $item)
6 E" ?. H9 _7 ?: w9 ] w4 @. G - $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']]; 9 C& T9 G( F4 q, ?; j. T
- return isset($items[0]['son']) ? $items[0]['son'] : array(); & o: u7 u/ v8 y& P
- } 4 J N! |) _- O
-
8 p! |3 K2 U7 Y j, T - /*** @. D# X( i* ]$ Y+ \
- * 将数据格式化成树形结构 a: v0 C5 N2 D3 e5 y5 ?/ s
- * @author Xuefen.Tong
7 D& S1 e8 `9 ^0 `# p - * @param array $items8 J. @$ F0 ^3 X
- * @return array 5 r N8 ]/ u# @0 u* i8 W7 e
- */
- u' m$ a: E$ z7 `% c - function genTree9($items) {) M' V0 }: c n: K) d& g1 n4 M1 Q
- $tree = array(); //格式化好的树- U/ `3 d) z; S) K6 b
- foreach ($items as $item)
' p. @# {' P- t: G - if (isset($items[$item['pid']]))
5 @) F5 {6 ^5 F0 \' j6 _ - $items[$item['pid']]['son'][] = &$items[$item['id']];
6 q7 J( c; y8 } - else( B' o8 L* M/ b& H% F$ J* R9 q
- $tree[] = &$items[$item['id']];
: _, W) v6 m/ [5 j - return $tree;- S0 f) r3 ^$ P z# G7 R
- }
3 x- X# h5 p0 L2 ]1 s5 J& G- } - , m$ l% ^1 r0 Q) E
- $items = array(, @$ U. U5 ?$ l- l# P
- 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),
v8 T3 |2 Q- b7 P: V7 Z - 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),6 `1 t3 m: X# H7 i' }6 A; H7 E
- 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),& |) Z, j$ o! C# y
- 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'),
4 Y6 b4 T% D2 i) V4 s N, \' [ - 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市'),
, x, ^1 z! w% _3 w - 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'),
" X7 Y" U! P9 k$ X! s: J7 \4 g - 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'),6 p4 t% v7 E4 F' n6 W" l
- 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'),
9 o8 ^+ L+ d: d9 D9 L" a% n - 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),
" ]+ r! h) M% I; ]! U }; n# @* c5 C - 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),9 R$ f) J4 O( S) {
- 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),5 J2 T5 }8 r; f# N
- 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学'),
& H* L2 V& x) \ I8 P x; U - 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市'),9 x- N9 S( C) t* b" U( |/ e# G
- 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'),
3 x; H& A- V5 x - 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县'),
2 v/ r! M7 D' \2 m! o5 o - 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),
% [$ A$ k1 w0 `& K% Z2 e - 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),6 Q9 ?4 @, ]# q
- 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村'),
2 l8 s7 F1 t9 `2 _ - 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村'),
+ g& H+ l( O/ ]4 e" j5 L$ M+ N8 s+ A - );
/ _0 n# w n$ c b# ?/ ] - echo "<pre>";* Y+ q/ L& h9 N% }: v: l6 E" A2 K
- print_r(genTree5($items));( e; S. x" R* r/ B- L) L
- print_r(genTree9($items));" K3 E, j* ^0 D
-
( w i0 w5 J* f7 @ - //后者输出格式,前者类似,只是数组键值不一样,不过不影响数据结构
0 o& ~/ q, S1 K* s O' l* h - /*
" @) [7 F% n2 T - Array
+ U: }6 }& I9 K3 A f - (
9 z& k5 j6 _% f9 w% D# g - [0] => Array# L, X7 C, |& V2 g `
- (
) C) m- p3 x0 N: { - [id] => 1
! h8 c7 B" H$ _ - [pid] => 0
6 Y: a1 b& B7 \( g - [name] => 江西省
/ g! H! y7 P3 h& W z - [son] => Array
0 t$ o& c% ^0 P4 I) }8 K' _- M - (* i& k$ r6 G2 i: ]8 j3 E/ H. w
- [0] => Array8 l+ x5 Z9 m3 z& H6 ~! M
- (
K" }, V J5 {, X. o - [id] => 3
$ R3 ^0 ^2 @1 ^+ c - [pid] => 1" Z" z6 y% R. H/ i' ~ V
- [name] => 南昌市
$ G$ u: V$ l: R - )
6 k7 m( O9 Q5 \4 s -
5 e" H8 p% k; f* |$ A - [1] => Array
& e& T7 ]3 a" A+ g' R* d# l, ^+ \ - (
$ d" c# c" @ b0 [/ P0 j4 {( C - [id] => 13* B# {, X( H2 x2 T6 `2 |
- [pid] => 1
* i8 a' }- J! y' d - [name] => 赣州市
! j. I t6 M/ m: e/ B. d* [ - [son] => Array9 _+ @1 e3 ~" {0 b7 [3 i5 [+ N
- (
. }5 ]) f; l _ i# a/ }8 R - [0] => Array0 _# U' A0 E7 U, g) q' K) H+ q
- (
: K! [2 c0 U3 ?! e - [id] => 14
5 s* ^ k- L+ H# e - [pid] => 13$ m$ Y& S: K F# u, i
- [name] => 赣县# ~, c1 z( B4 Q6 E. \0 _
- [son] => Array
1 x W; o+ ], f( d: ~ - (
4 q* r5 r5 k; u" c - [0] => Array% s' u7 e+ z& W; d/ u, M
- (! @, ~( ?1 _5 `
- [id] => 16! U/ ^. J; N* q
- [pid] => 142 V, [" S. }1 w) {
- [name] => 茅店镇
" q4 ?+ _$ F1 e# j7 U& G+ S4 f - [son] => Array8 y% c1 s; Q! D y
- (
} S: M/ l' d+ J - [0] => Array w# G* L' r/ D/ g- A7 `5 X
- (
! O! b' D& g3 m d+ } - [id] => 185 O* y/ Z3 J: ]; \3 Y6 N
- [pid] => 16
# [# X' [9 r7 w' n$ E - [name] => 义源村
" }; t. M8 x, T p \8 f' c- a - )5 l& r; J& e6 |9 W0 {
-
6 h0 ]3 l4 A* ?& _- N8 Q$ [ - [1] => Array
. r0 }: t( P$ G: n# @% y - (' r0 n8 e! c, D# L9 L& Q
- [id] => 19
8 t/ m% c3 f2 I, B( ~5 b" _ - [pid] => 16, ]: |8 f0 D/ N
- [name] => 上坝村: K8 L' y8 X" b$ l7 A6 t+ Z
- )% X: r0 x( k; T& f+ _
- & m& k% n& A9 x" P. ^7 g: E
- ), G* G( t) a8 W4 u
- 7 a# B% V, I* v" @" {9 |" t
- )
* o. x* o' j7 s* m$ `" ~ -
6 ^' x* k! t! k$ S! v7 H/ h% I7 ^ - [1] => Array
0 |6 N- @- K3 K7 O3 U$ I - ( ]6 p3 N8 ~- q2 P& @. r7 b. X
- [id] => 17; H2 C7 i& b6 [. ]/ }6 B
- [pid] => 145 l6 A3 v. r5 K* ~7 V
- [name] => 大田乡. n+ j2 n k+ s
- )3 b: e: W6 U8 n6 G
-
' s$ b2 z3 J: {/ ~% j - ), Y, l# w! s& u- F) h% j; l: X
- ) `- a/ x& y' e. @
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- [1] => Array
% q- b' _! x0 T0 Q$ \1 X# g* `+ Q' D - (
- {( D2 s1 f0 u, m! R - [id] => 156 n6 `% t: u* E( }! k. M: z
- [pid] => 13" a6 r8 a X c' C) |
- [name] => 于都县
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4 m% \4 {- c# G# M$ ~; Z1 z$ j# `! V - [1] => Array- V+ ~6 s+ c( {! }7 w/ A1 \. r2 [
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- [id] => 2! p: _2 M+ C* o/ D
- [pid] => 0
2 j9 I/ ~. W7 t$ ?: ? - [name] => 黑龙江省* V* _+ k: X! [+ \5 t. b2 n
- [son] => Array: N# r' x9 \' w6 l
- (
& e; Q/ B* x# @4 f0 r* S - [0] => Array
( O9 }* X4 I6 e% t% a8 Y' L ~" z - (- |+ P; I; z4 j7 k2 J8 @
- [id] => 47 C9 Q; M! d5 C9 Q! n* A$ t; N8 h
- [pid] => 22 l: f" w, i; @8 W
- [name] => 哈尔滨市
l, N4 y" N# m5 ^: s - [son] => Array/ b7 P5 _8 K; i$ L
- (9 l% v! Y; [. q: {- {
- [0] => Array( c* o# t6 Z: D. V
- (3 B8 C! Y5 ]3 {+ y2 C# O: G
- [id] => 6
0 t6 z6 O4 ?! _% i - [pid] => 4
E% u$ M) `1 k' B; u - [name] => 香坊区. J: C3 q9 \( n, p+ C
- [son] => Array" B! Q- c- w& x. @1 W
- (7 U8 Z, A" o; E& u# j0 _7 K9 N
- [0] => Array: t1 q0 U; `2 |" c6 C
- (5 X+ t, i7 |- W2 I
- [id] => 8% q" l9 @& q& y# @, U9 _2 K
- [pid] => 6
9 M" H8 B, I% B$ ] - [name] => 和兴路8 R9 @. E- s! H* m; J
- [son] => Array
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+ p) s) \- Z) v8 A8 i+ q B - [0] => Array
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- [id] => 10
# W# v$ t9 \( z6 c2 @. \ - [pid] => 8) S) N, M1 {$ l% P6 y
- [name] =>
; x3 H8 R: T6 t6 n7 j) g9 q0 ?6 p - 东北林业大学
7 y- f3 D% x- f$ U1 ] - )
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- [1] => Array: m+ g' F; R' ]1 ]0 o5 Y
- (% _; `. ]: F' {" O0 q
- [id] => 128 b0 H- w: ^. Z
- [pid] => 8
" H+ x4 [7 T5 A4 v/ y - [name] =>
! a! P$ y6 S e0 r% g - 哈尔滨师范大学" t3 f) ^) s* i
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- [1] => Array
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$ d' O% ]: v' H& B) R9 p7 x% n - [id] => 7
% I. n% ~7 H% R+ h- Q - [pid] => 4% E, y* H$ B/ A0 U% \
- [name] => 南岗区1 Y# [" e; r; y3 I3 \, `2 R
- [son] => Array
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$ t8 S! O7 q5 K) C2 { - [0] => Array; r. ]4 [; j6 A6 L) X. P
- (
! Y c8 [1 a( D7 f1 u - [id] => 9
7 W& K" D* M6 y5 X% B - [pid] => 7
4 `" k1 n: |7 A - [name] => 西大直街$ l0 u: L/ E: z$ i8 @/ A; t
- [son] => Array4 Y! i9 U9 u: q0 v! t0 ^# J
- (6 B8 g$ N5 d7 Y( m
- [0] => Array
# `+ I: @8 {4 Y - (
. N9 i9 [& j5 G - [id] => 11( d, J- o8 H, u1 B4 |
- [pid] => 9
6 G9 @+ q$ A$ v - [name] =>
1 G8 W+ M1 f4 u% C9 b - 哈尔滨工业大学
) M, }, z' a% N" E: S( v! j8 Y: B - )
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- [id] => 5) C0 J5 }( i6 q! }& F) C( }
- [pid] => 2
( I4 N$ g1 `: H/ \) L - [name] => 鸡西市
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复制代码 可以看出第二种代码只用了5行代码就实现了无限级的分类树,非常值得大家的借鉴和学习。' R$ X, Z" k* g' p# z7 y
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