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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。. B$ W0 l+ V3 J+ d9 I6 _8 Z% ?/ F
一.数据库设计: |+ g F6 u) {% t4 v) ~& L
- CREATE TABLE `bg_cate` (/ ?" c9 i2 B2 [' Q5 F
- `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,4 O, }9 l: P& s5 s
- `cate_ParentId` int(30) unsigned DEFAULT '0',8 n3 Z# u+ z2 z6 V
- `cate_Name` varchar(100) NOT NULL,
" l% ~5 W( d( h! }# h' U4 f# F - `cate_Intro` varchar(500) DEFAULT NULL,
% D* ~: s" t: w! E% {6 Z - `cate_Order` int(30) unsigned DEFAULT '0',; R* f+ p4 T% J, ^* w3 K2 `( u
- `cate_Icon` varchar(100) DEFAULT NULL,( a& X h" k' i) {
- PRIMARY KEY (`cate_Id`)
2 ~8 X8 ]: t* F& J. k - ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;5 i: |& o: ?2 b% h) A2 M
- --! J9 W6 l5 c0 G; l. u. ]/ y! C
- -- 导出表中的数据 `bg_cate`& D" ~) F; V- |: D# s
- --
6 x7 U4 i( E9 ?8 d$ S - INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES
7 p. e# y; U/ G. i' E/ q - (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'),, W( |& n/ Y% f) S. I
- (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif'),
, [1 }4 s- x$ E H | - (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'),+ O& \- J# Y$ _* y0 G* S( O2 u
- (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'),) O1 {& f0 r) ^6 P( T4 T( R' ^
- (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),7 V9 J; B+ O! {$ ?$ d
- (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),
) J- T/ J9 ]: b/ G' T - (8, 2, 'html', 'html学习', 0, 'icons/1.gif'),0 b4 I( `. n& n4 l4 s6 Q4 b+ X
- (9, 2, 'css', 'css学习', 0, 'icons/1.gif'),
) @# l: J2 e/ J. Q1 j - (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),! C8 \7 s9 P% s( V
- (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),9 X J2 q* X, M) W% v. i
- (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),# K* C& w. G/ S6 N2 U
- (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),7 G% b( u1 x- U7 J7 h% G
- (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif'),
" k6 ]4 I3 [! [& c - (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'),
- m' o: s- h* U" g* q* a' K8 f - (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),
( B; C* J3 Y" \ z' s& x7 v# h - (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),
+ G: E7 [0 O) L9 [% P - (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif'),
; j3 Q; y7 M5 @& V - (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'),2 Z: k1 P n1 J6 z- ^: J
- (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif'),
7 F3 Q7 f) l4 n7 P - (21, 19, '学习', '学习', 0, 'icons/1.gif'),
1 P( c+ v" G0 o7 @' p. Z# T0 w4 E1 a - (22, 19, '运动', '运动', 0, 'icons/16.gif'),
a; |" }1 m5 ^) s: s6 t/ W z2 s - (23, 19, '旅游', '旅游', 0, 'icons/24.gif'),2 g# {1 _0 w+ S: |# `' h: O+ x
- (24, 22, '排球', '排球', 0, 'icons/9.gif'),
) v$ Q, e( j8 Q - (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),( }3 c3 ]4 ^) }% D# E4 Q% P
- (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),; Z; _. A1 [! P' i# Q6 H4 ? Z, v4 {
- (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。& U4 a1 E# r* b& D6 d$ f$ b! E" C
- require_once './classes/MyDB.php';
3 n; }8 B# y' T3 @ - $con = MyDB::singleton();8 ] Z5 n; s6 B4 G/ y$ E, l
- $sql = <<<SQL
. `# v" o: [7 h$ n - select * from bg_cate cate
: {9 [% C- [1 ?) G& d% R% t - SQL;
# b2 n, N% G* T1 [ - $data = $con->getAll($sql);; E) @7 ~- W; ~
- //print_r($data);
复制代码 数据库操作我用的是pear类库。, M1 X. T3 f3 g) h r8 I2 C8 d3 P
最后的$data的数据格式如下:6 x4 l" ?0 j$ l
- Array8 J1 }9 o8 ^, ^& k" ?
- (9 V* `- t" j! p a
- [0] => Array' Q* |8 c) H+ ?* v' |
- (
$ u+ N$ ^) u; s- _: o - [cate_Id] => 4
# A) f- U- \5 [- {. E - [cate_ParentId] => 0" \0 M2 i( c9 w2 T. |; u
- [cate_Name] => 往事如风
$ W* [( M* b4 {7 D - [cate_Intro] => 记录往事' a8 P% F2 u! u. A6 C- Y; @( u
- [cate_Order] => 0' k d: m( r$ r
- [cate_Icon] => icons/6.gif
+ ]% W, t4 Z: F% p# k+ T' s - )
6 f1 N$ B5 t7 n5 n - [1] => Array1 n p. t& f) x# \ ]
- (
, `* A+ a& v7 j% m6 s% R - [cate_Id] => 5
7 a7 c7 X, V2 Q( x - [cate_ParentId] => 0) p- H- U; b; H, q4 N3 E- n
- [cate_Name] => 水煮三国1 {+ K( d8 T8 D& P3 _8 G
- [cate_Intro] => 品位三国智慧
) I! [* F, \& i - [cate_Order] => 0
9 @ ^1 o6 G7 K8 f- k& \% \ - [cate_Icon] => icons/3.gif
, d9 ^% L( Q2 ^, N0 ^* L% d - )
复制代码 三.把上一步的数据转为树型状的数组
6 r V1 J8 V5 {3 L8 l5 v代码如下:) Q9 T( q7 Z- x0 f
- function getTree($data, $pId)+ W( p7 d' x, `. s" W# d0 ?
- {, F: e: N, E" Y: g( D$ X% w* H
- $tree = '';9 R. t- i K% e8 a1 i
- foreach($data as $k => $v)7 D" t& E& r% G& h
- {
2 T: S+ \) z8 q) x - if($v['cate_ParentId'] == $pId)
* {4 v; ?6 z; ~ R - { //父亲找到儿子) [5 T# {3 W- }
- $v['cate_ParentId'] = getTree($data, $v['cate_Id']); m! A# |9 A2 W. G d3 Q& z
- $tree[] = $v;/ n( ~& f" Q9 |' Q. I, i
- //unset($data[$k]);0 d r$ ~" _, t- z& \' H5 ^8 U
- }9 s4 ~+ ~' a; N0 d M1 {" S
- }
) d( w% T+ p! E2 H& G) ] - return $tree;
3 t& E+ }. s t; ^6 }. N" I - }* z6 Q6 T# m: _# o* c
- $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:; s" ^8 S5 u( L) y+ I
- Array. `( m. N1 |- A) m. ^
- (: U) q9 L ?& H
- [0] => Array: [9 z7 ]- V. G. X0 g
- (
9 O! B* o! d3 ~6 w - [cate_Id] => 4
7 a L! L$ T) M0 G) F5 G: p - [cate_ParentId] =>0 c4 s2 O* O$ q8 v1 k5 t5 G
- [cate_Name] => 往事如风& p1 {" b* w5 j4 ~8 F
- [cate_Intro] => 记录往事
% A6 k: |/ Q) \1 g1 U - [cate_Order] => 0
" R& I9 W5 C# v - [cate_Icon] => icons/6.gif
! ^+ m1 L& K5 ?4 @ - )
' M7 p0 Y7 u6 v3 C) N: n - [1] => Array' \8 a+ F8 N4 a& E# b6 Y
- (
5 h" O. x4 q. n* P7 O - [cate_Id] => 5" I! |$ ~6 P6 n J/ G, A* G: U
- [cate_ParentId] =>' Q8 A' p. U( V+ p; f0 X6 z J
- [cate_Name] => 水煮三国1 x& L* }& J) ] c- B
- [cate_Intro] => 品位三国智慧
$ { \1 n: W2 p, ]) [; R) t& n+ \ - [cate_Order] => 0
5 F |0 D/ j) Q2 r) m( j. D - [cate_Icon] => icons/3.gif+ t, e# x/ w6 J: n, z
- )5 I* }3 e. N& z& k+ X# J
- [2] => Array
; x3 S% ~6 G! i' N+ S - (
^( B, t( [+ b& B* [# F! m4 h - [cate_Id] => 22 V9 P' y0 e. l
- [cate_ParentId] => Array i' w2 E; W1 o" _
- (
) u J7 A* n" M. c* I1 `5 ~' N - [0] => Array
9 n, R2 Z8 a$ }/ b3 s. ^' b, ?; u - (* L/ I1 F, R5 @- V" d
- [cate_Id] => 85 t0 a, p4 P# ^) ?
- [cate_ParentId] =>
" _7 h/ e8 N) c. t$ i9 p# d - [cate_Name] => html7 m+ a+ t3 o( X- Y5 D+ P
- [cate_Intro] => html学习
* ~* c: ^- X8 ?' ^8 ~ - [cate_Order] => 0
F k! {2 c: U q- H - [cate_Icon] => icons/1.gif8 w7 m, R3 y( p( Y, E
- )
复制代码 四.把树型状数组转为html7 X2 U f* ^- s4 m( @& q2 e
代码如下:
- c6 J/ F2 B- u$ W- function procHtml($tree)
- p" {7 Z k4 _' D+ k0 R5 }! V9 d- d( h - {
* w8 g% j9 h# X2 X. W - $html = '';# j2 J) `1 k- U- A1 d
- foreach($tree as $t)
7 }% G9 A3 q+ ^! v% v# [ - {
5 |7 C _# J- ?# P7 r - if($t['cate_ParentId'] == '')
8 ^" |3 J0 ` K+ c3 O# V! \ - {& ~( g5 h7 [4 g5 N8 |$ B
- $html .= "<li>{$t['cate_Name']}</li>";
. Y& p6 Z' U N! B! U - }
e* I# { @/ } - else
( e8 O$ O z# h6 L$ L/ [ - {/ L( H2 A( a- P" p4 Z7 r i
- $html .= "<li>".$t['cate_Name'];& g7 e o; }. q3 f9 u
- $html .= procHtml($t['cate_ParentId']);
- u+ _. I+ h2 r d. \: I% a$ g - $html = $html."</li>";) ?$ l1 Y! X2 f" h
- }
3 c! Q) E! @1 Z; S0 M) t - }
( a F% S+ z" `* l C - return $html ? '<ul>'.$html.'</ul>' : $html ;# l# ~$ k# x/ z
- }
# ~/ Z9 b% ^) a) h - echo procHtml($tree);
复制代码 输出的html的代码格式为:6 Z3 z- v! m! [! E# i' b
- <ul>
8 ^/ d; g& L" [8 @$ `, R: @8 } - <li>往事如风</li>
/ w& P( L- u. N, O ]( C$ s8 \( \ - <li>水煮三国</li>
( I. l ~6 C' y. C; Z - <li>技术学习, ?4 |2 ]. m. M; i; [% t, J
- <ul>6 W- \6 `/ _8 p- f2 v$ Q
- <li>html</li>+ T o2 k4 v5 |
- <li>css</li>
' u0 M- `, U: r- S9 Y' m - <li>php
+ _6 p) g% p4 r, h3 _ - <ul>3 Q9 l `5 k' C! d! V
- <li>php基础知识</li>6 H. T: |( u* d( R0 M
- <li>oop</li>. N) Z& j. f4 H" O$ Y
- <li>php安全</li>
复制代码 五.代码整合
' G2 Z% `4 E1 O s( D- function getTree($data, $pId)
3 Y6 q2 y p( |! R. U" Z8 N9 } - {+ W# x, x- `) z- n# U- ~
- $html = '';
E3 U w" O% R( n6 W0 J6 K - foreach($data as $k => $v)
# g: F. C E8 Z4 L2 `6 K - {
) \& t& P, G) @ E - if($v['cate_ParentId'] == $pId)
1 q7 [" \2 |9 ?# Z" f - { //父亲找到儿子, o5 T7 `9 x: D' b3 v' O
- $html .= "<li>".$v['cate_Name'];
6 L9 Y: U( f( z+ r4 Y. J% y - $html .= getTree($data, $v['cate_Id']);
% R* o2 e# L1 A2 q& R! d( m - $html = $html."</li>";: C. }4 N, ]$ s5 a+ q
- }
; e3 w% m2 R4 {7 ^ - }; Y' S$ p4 v$ } }7 q9 }
- return $html ? '<ul>'.$html.'</ul>' : $html ;" l! \& U: d4 |8 I& Y/ p2 m6 z: I
- }2 h$ Z2 E4 Q) d, a; G: e
- echo getTree($data, 0);
复制代码 六.增加CSS样式% |4 D; L5 G/ w) h
2 _' i+ X; G0 k" l% [# V/ ]: k
; x3 ]) H) O( c
第二种是从开源网站上看到的,非常非常的简介。
( k$ I& x! t6 L3 h5 C8 w1 [3 [+ `( x- <?php1 m+ p; x5 x6 n9 q! x
- 7 B7 q" s8 s/ F1 `
- function genTree5($items) {
7 M' i5 n: {1 \% w - foreach ($items as $item) & \6 `, {4 z- k) F3 K' C# n& W( L* G
- $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']];
( S" {# p6 y5 x" s! m' a3 l - return isset($items[0]['son']) ? $items[0]['son'] : array(); ) i) w- o. ]# B+ J. g- v
- }
' G$ k4 G$ S5 \% x7 g - 8 r0 n9 Q2 S, v: I! {# v7 J5 s
- /**. D) e7 G% j; M; q0 ? I8 w
- * 将数据格式化成树形结构
2 W4 Z# q x5 W - * @author Xuefen.Tong/ `$ e0 a& C* ^3 f; u. |
- * @param array $items
2 X9 ^: F8 Q( ^$ j - * @return array ) M+ z5 [2 V+ x
- */
! @4 K' E4 D5 H6 ~6 G I6 l5 ] - function genTree9($items) {4 I w( B% K# D6 A) o: k9 Z8 s8 n
- $tree = array(); //格式化好的树
% L0 ~/ s1 L' }, ]4 E) i - foreach ($items as $item)
) ~+ g" p! y2 u2 h( v2 H5 d - if (isset($items[$item['pid']]))
$ [% N. O4 Y' Y3 I. S8 t - $items[$item['pid']]['son'][] = &$items[$item['id']];' e5 H9 \0 k: B3 m2 P: b
- else
" [: ]5 m7 K6 W; e - $tree[] = &$items[$item['id']];
5 m( d3 i' [. V' ~# g# N - return $tree;
" D) L$ H5 _4 s- b - }
8 H9 I' `# B* J4 I9 K, U, I0 s - v0 B6 j8 _# G4 ]
- $items = array(( L# U& V( v+ O4 D2 j+ b, |( u3 \
- 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),4 G; `! t% ~7 G+ J4 G; P6 I" F0 E$ z K
- 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),2 V7 ~5 Q: X0 M& Y4 X$ H0 r
- 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),
7 R, q0 a7 T4 S0 F# r5 R - 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'),* g7 Z% A$ @. R: f, O
- 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市'),
: ^6 J( V9 \7 D, n% i' O# K2 I - 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'),1 a1 Y5 X( d& o, M! X
- 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'),# J$ G; `2 s6 f' e
- 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'),9 E7 S3 Q* P4 @9 w
- 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),6 i0 l) q1 x7 {) t
- 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),6 v% ] c, O7 w( k- }
- 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),8 S/ Q; L7 f3 ? g" n
- 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学'),1 B0 K! g ]/ t ^7 U6 I/ i) P
- 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市'),& J* P7 l+ @/ f1 F9 {; F0 P' |
- 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'),
/ b* b) P( {: H( B% ?* Y* n( Y3 n - 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县'),9 e. T8 H( t8 N F8 o8 c! K
- 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),3 B8 h1 V9 s; r$ Z/ W! ]+ x" b2 l
- 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),4 i% \1 G/ j/ J5 l2 d) `& b
- 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村'),
: {: l3 d$ I3 Z" K3 J j - 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村'),# r+ S2 w+ O: g, F) @$ a
- );0 ]% s* V w& b6 _* W* u% R
- echo "<pre>";3 p& ^' @$ \6 i
- print_r(genTree5($items));6 k1 y2 ~* L1 l, Q" I! q
- print_r(genTree9($items));
7 e9 H, C, r% H -
2 Y' ]/ H6 ]/ F9 {- v; [ - //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
. A" @6 B/ r1 n( C! I6 ^ - /*
5 a: Y+ _( `4 A8 i1 H1 m - Array
% N9 W9 a% G. t* W7 V; L5 e% l - (
/ j ^% {8 D$ i, j. G& z - [0] => Array- {& z# m" N" z9 a
- (% F0 j, g6 M! B( F/ `" ?
- [id] => 1
+ ^# B( ^3 I; Z - [pid] => 05 c9 R, Q7 F( @
- [name] => 江西省
" \* t5 ] C9 L: y- B+ k! {( ^ - [son] => Array
5 n3 Q* |( W. c - (' `0 `' ~* E) U' Z: e+ T8 ~3 q; A `
- [0] => Array
7 h8 a) O2 Z# u3 l( Y* d. s - (
2 k; d+ U O% r# A" a - [id] => 3. Y; U p8 j- F% J
- [pid] => 1
1 G7 \# y( g3 U: Z6 i3 b9 U - [name] => 南昌市
2 `- L7 m4 ?+ {" C% l% z1 j - )6 E# O! E" p- H2 Z7 j% a* x$ z
- - W# Z6 I' w& z$ {4 F
- [1] => Array
, D2 x1 l5 y* ` j f3 h - (
P8 W% j2 a) A. }$ ]4 n - [id] => 13
1 u9 \! x! R q5 c) V! C1 ` - [pid] => 1
( i: V' X# j* e4 J: G - [name] => 赣州市
! C8 D$ a- x# M+ L) @ - [son] => Array2 V7 l$ m- a% D3 _
- (
6 a$ O% E( l: g+ @& T) c7 } - [0] => Array
6 q% A% d1 U3 e& Z' k# o- u - (
1 D+ F- [4 H! z! U3 F* _ - [id] => 14! {9 I: D1 {$ p: F3 l1 D( r
- [pid] => 13
1 o5 w4 `( i$ H" x - [name] => 赣县
6 ^( a' W, X# O; f% r - [son] => Array' D; T% X4 z- n: k$ [
- (4 p1 _& Q( r& {
- [0] => Array- f. W3 S% n( J+ P0 }- `! F
- (7 F1 ]: m5 N0 U) P
- [id] => 16
0 W7 E6 O' U" N% q: T6 k$ H. K - [pid] => 14; d8 \3 Q. f+ z
- [name] => 茅店镇+ J4 r. S8 Z) c% S2 z
- [son] => Array
7 \- f! `3 _( p8 { G - (. [2 _) N+ ^0 U1 s+ c7 s
- [0] => Array
% P: A4 E- N, X- J5 A! c - (
6 W% E7 K2 A/ A) E! W - [id] => 182 b' H6 s- V1 ~; s4 W8 e
- [pid] => 16
: K" P8 L( H* H5 U T& B- E - [name] => 义源村4 Z' |& a! T# c$ @) Q1 P9 ]/ O
- )
' s3 r+ z2 N7 e- [; Q2 f4 G0 o7 r -
3 ]3 L8 P" i9 y' { - [1] => Array
* S: t- R1 U/ a! V6 l - (9 m; C9 u, q6 Y: |4 b& H4 F5 O
- [id] => 19
8 i* j d# |0 i4 g0 v - [pid] => 16* ]" _4 G) g G
- [name] => 上坝村
9 F. ?) z3 P. g; d' D - )0 A6 O; f3 i4 I" ]( M8 Q
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- [1] => Array0 q" Y y8 ^) n* p
- (
9 |( o' W$ p6 K& F1 w - [id] => 17, o8 x h. H- U* j: E( [
- [pid] => 144 u. I! }6 r. ?
- [name] => 大田乡
* g8 A) g* ?) Z. P4 V - )
2 Y+ `- D, c! R; U H" D1 [ -
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-
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( f. W5 t: G' q/ U i8 o - [id] => 15
- T* Q, G1 W, ?/ P7 b+ ~# h/ G - [pid] => 13
: j3 u! W, t$ v6 H - [name] => 于都县+ p _( [' d! d
- ), [' w/ ?) @5 `6 @
-
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8 ~# I0 L3 a3 ]9 o- g - [1] => Array% n, t$ ^" g( r$ Z& x- X
- (( n. F6 _8 v4 z" Q" Q; Z
- [id] => 2/ ^0 C- m1 T( E4 V; @: i
- [pid] => 0
$ G+ K5 ?. q7 V. e: W - [name] => 黑龙江省; R! C- B2 z `' v( [9 T" M, H. r
- [son] => Array3 N8 b6 W$ o* u
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- [0] => Array" V T5 B: o- S9 P4 T. P# G( Z
- (( ~8 v$ i6 F: f" L E' X" }
- [id] => 4
& D3 D. r2 m; ~ c5 e V5 C - [pid] => 2
' Q& D0 d. A/ w+ r& } - [name] => 哈尔滨市. k- ?" @5 o/ r3 K
- [son] => Array& S, m0 k; @ o7 q$ j. `% V) F4 B% p+ ]
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1 i" j: A* {5 y$ J% p) y c - [0] => Array$ _; \; i, }& X
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7 W- k( X, B1 I' T - [id] => 6
! c/ y& z( a6 p9 p3 L) h - [pid] => 4
6 a/ Y' K& P* j; l - [name] => 香坊区5 x c9 p$ J9 K! I% t# F5 n
- [son] => Array! O. H% f/ z1 D; L7 W) Q& p9 [
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! w7 z4 E) T: D* z - [id] => 8
2 q6 U' R! ~/ o4 V. A4 y - [pid] => 6
; t2 ^8 {7 k" u( b8 }: u! V) Y - [name] => 和兴路
/ {2 {, q. \/ f1 h - [son] => Array' Y- @, n; V- P$ _6 J, D) J: O
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% C7 `9 p# z# J9 A - [0] => Array
0 d5 N# K7 a7 m4 f' B7 | - (! V4 L, d" a& J/ y
- [id] => 10' o5 {2 ]1 R- H! @; v8 p4 n
- [pid] => 84 N$ {6 s8 a' q# Y* K: n
- [name] => 4 C" Q- M0 W4 j
- 东北林业大学
6 [; Q' B7 b; m3 A - )
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+ a; {- p! t. N0 r4 A - [1] => Array+ |1 J6 D" l9 R
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- [id] => 12& \% p- Q; v( G( q; c
- [pid] => 8% Z, E7 R8 }6 U$ [1 J ^
- [name] => ; r: a6 X' _6 b$ `! R X
- 哈尔滨师范大学6 U) N: r# ^4 L4 F' h7 b. E# A
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-
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$ K0 X' T" v# f -
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- [id] => 7
, A5 g( Z- U9 ]* _# c - [pid] => 4
1 n4 P, C" A& o7 i- s - [name] => 南岗区: t4 A9 [8 w3 e: {, X( e
- [son] => Array
0 }) @% _/ O8 P, @ - (+ @) n% o; f2 N& ~8 U
- [0] => Array
: G7 |& f) t- Y - (
5 y% C! D' p" E$ H- m) Z6 j - [id] => 9
, j* n2 a2 {6 J, u: D M6 N3 C. h - [pid] => 7
, } l z: s% S$ K$ c - [name] => 西大直街% S6 ~ h( B! M
- [son] => Array1 i3 y8 G- P; K, x5 `" R
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- [0] => Array( J! H% E7 Z- x& C
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# K3 {* J, Y/ h% b4 J - [id] => 11/ g1 Y& q9 `+ O6 J
- [pid] => 9
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# d& q! q' ?. u# Y - 哈尔滨工业大学3 e3 `( m3 N+ L/ \
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- [1] => Array9 L3 k3 l. d& p, `3 D
- (
+ Z% O# g ^" R3 W - [id] => 5
# ]7 k2 F* |5 o1 f8 I% f5 } - [pid] => 21 w& |* g; _5 s7 C2 s
- [name] => 鸡西市* c2 L. V* {6 X! M& S1 _5 D
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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。" |+ ^# x4 i* U( m
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