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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。
8 P Y6 b4 `& r0 H/ `一.数据库设计+ a. t9 n/ P! f, v* K
- CREATE TABLE `bg_cate` (
/ V& Q8 X9 k0 O' v T: ^2 I, j - `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,/ u% V& j( F$ u7 Y H! f. o
- `cate_ParentId` int(30) unsigned DEFAULT '0',
; V$ _ j. Q8 z5 ]1 i- ? - `cate_Name` varchar(100) NOT NULL,: y- G( N5 L8 U) ]
- `cate_Intro` varchar(500) DEFAULT NULL,
: j4 ^/ m$ T1 \1 y - `cate_Order` int(30) unsigned DEFAULT '0',2 M( \5 X4 a; ]
- `cate_Icon` varchar(100) DEFAULT NULL,, W$ P: l" k* D0 N& p
- PRIMARY KEY (`cate_Id`); z$ \( n, w* w: D) i
- ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;
8 T% Y& e, a, {7 j* a5 Y% _ - --
$ h% }8 j; u. k& y0 J0 k7 O - -- 导出表中的数据 `bg_cate`
# T% K' i* ~! B: w: X - --
z+ h1 q& ?7 b$ @( C3 g - INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES: X' F( ^! H7 @ c0 Q
- (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'),
4 U# y. ?/ Y# V - (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif'),& ?+ P; c3 M' v$ p4 X
- (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'),; x: e; N+ V; {( `
- (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'),! _3 [( h% x e* v
- (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),
* i( o2 `8 M+ P' @ - (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),
- o0 o4 H& K, s% K - (8, 2, 'html', 'html学习', 0, 'icons/1.gif'),
: o2 Q4 V" p$ S( V9 z9 _) | - (9, 2, 'css', 'css学习', 0, 'icons/1.gif'),! X6 N. I4 `; g' H; ~! |- ?
- (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),4 w/ C7 R; X* i* y! k, ], e: ]9 y
- (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),
/ L' x6 J1 }8 e2 s5 I - (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),( {5 B0 y: i# l$ u9 ~* D2 M7 Z4 g+ s
- (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),4 [/ k. i8 K* F" b. f3 r
- (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif'),( ^( j1 L& d) X# Y" {
- (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'),: X; r1 P( s( U8 }/ @0 t, i
- (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),8 n; e g$ r( ~( }4 M3 G
- (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),; B& o! P4 u* k, ?' ?3 u
- (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif'),3 @7 S# D5 P; z
- (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'),
0 h* J! u) j0 i9 A - (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif')," a( b* ^/ i# V& @& D
- (21, 19, '学习', '学习', 0, 'icons/1.gif'),
7 ~# }4 m$ `7 r b) ?! _' s - (22, 19, '运动', '运动', 0, 'icons/16.gif'),/ B" p; u) J+ F F. x
- (23, 19, '旅游', '旅游', 0, 'icons/24.gif')," I: f3 a+ O' J/ e: o1 _8 O0 K
- (24, 22, '排球', '排球', 0, 'icons/9.gif'), l* H7 l! g! B8 d# t) Z
- (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),( G2 B J2 a9 X, y# |: q
- (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),
. a. z* W* m1 a+ R! y7 r - (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。5 m7 d2 ^ B+ V) u. \- y9 o$ ^, X& O
- require_once './classes/MyDB.php';) ~1 W4 D9 W {' D, c4 }* E0 t+ y
- $con = MyDB::singleton();
8 ]; \. j c& |9 Z - $sql = <<<SQL* g+ m& g7 q$ J: G
- select * from bg_cate cate
; I2 V. Q# i4 S" l5 Q - SQL;
5 P. `' Q% ^) M0 F# M& a7 l - $data = $con->getAll($sql);
% r1 O8 \ @8 V7 I - //print_r($data);
复制代码 数据库操作我用的是pear类库。
% X4 H7 e0 W% q! @5 a! u" y% M1 B" t最后的$data的数据格式如下:6 d1 E3 t( N% e2 P6 _ T- |
- Array! c9 r P, c2 X
- (8 H }1 n' R6 r( k4 {
- [0] => Array5 o3 o0 M& [4 [7 g6 G4 `
- (8 g$ L$ F; o% Q1 N N
- [cate_Id] => 4
% y, M3 G2 h: w' a6 P - [cate_ParentId] => 09 E* @8 T. B" ]& r. n/ `( \2 l
- [cate_Name] => 往事如风+ f! V b2 T& p( X
- [cate_Intro] => 记录往事
2 A. k! ?' X/ o# ]/ T9 F) I - [cate_Order] => 01 e }; m. @- D$ m
- [cate_Icon] => icons/6.gif; q+ q; x" j/ \- D' M j& L
- )
2 O7 F5 W2 ~6 F2 i/ a) ^' ` - [1] => Array
! `1 W2 h+ @2 v( _, W- R# H - (+ G( v( C" A; m
- [cate_Id] => 5- g# Y5 l. r7 r( f+ F! N# ?
- [cate_ParentId] => 0/ F' N& j& n7 S% B3 c
- [cate_Name] => 水煮三国( F, f1 l* U4 P y; r! P! `
- [cate_Intro] => 品位三国智慧
6 A( j1 a" n2 V6 u - [cate_Order] => 07 @3 H" s) g$ \& M! r
- [cate_Icon] => icons/3.gif
# c6 _ t' r, _, W+ I7 t - )
复制代码 三.把上一步的数据转为树型状的数组
) j% ^! P% G9 S( q+ P0 N代码如下:* q# P8 p1 U, J, q8 B! D3 I5 l
- function getTree($data, $pId). z3 Z" E) [$ M: @
- {
( E; r, t& }8 F9 a& t$ m4 M - $tree = '';! d9 P: S g( J8 |, D3 n
- foreach($data as $k => $v)
$ W. g5 W2 T, {5 u5 _+ n - {
) f) }8 X- @% P8 q$ m. @0 g C: Q( m4 t2 { - if($v['cate_ParentId'] == $pId)! P0 W$ H$ f+ j, ?
- { //父亲找到儿子! e- E6 y/ O+ I' p& `9 ~- x
- $v['cate_ParentId'] = getTree($data, $v['cate_Id']);
7 P; V6 _9 }, p& S( a - $tree[] = $v;
( [; l; T$ o) c2 D6 ]' k - //unset($data[$k]);
* l/ b( O# n5 ?- ~ r, h5 E/ }2 a - }
' D- x- y! v# u - }0 v5 E. r9 c3 s5 r5 H5 O/ S- |
- return $tree;, I5 l4 `9 n: a5 }, ^, Z# I1 S
- }- c8 j1 y& o9 N; d9 a( J
- $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:
9 M' `% g, x- l) r2 r+ ^- Array
: W6 z' p9 \( [$ e% K Q - (/ v; T% a& h! z. L7 h
- [0] => Array
& c2 o9 Z8 U9 X$ i7 S* d - (: c$ h k. i1 i
- [cate_Id] => 4
& J1 a9 {6 @3 ]! J/ M. ~8 n - [cate_ParentId] =>
' E* f- _( L4 J! q2 c - [cate_Name] => 往事如风
0 a3 ^7 w% w: \. \* Y) {4 @$ j+ J - [cate_Intro] => 记录往事
. f9 a# R5 T( p, ?. I, D - [cate_Order] => 0$ n, e5 A/ l/ z0 `5 s
- [cate_Icon] => icons/6.gif
; j* _; _7 M6 R - )
) U) K2 D4 q$ A Q1 u H n( M - [1] => Array9 a: j, l" \+ n/ x6 z8 j
- (
+ P# R& \1 P7 L; S. Y7 L - [cate_Id] => 5
; O. T' Z0 J- x( C8 Y0 D( o& o - [cate_ParentId] =>
/ m: O% K/ \7 I2 A# h# ]6 p - [cate_Name] => 水煮三国
y: R! f6 x: D/ x+ ? - [cate_Intro] => 品位三国智慧) `" h A1 a0 S' c+ L& Z
- [cate_Order] => 0
* L! E, F/ g1 i9 |# z0 t - [cate_Icon] => icons/3.gif6 m4 N5 X' _( ~& h$ C
- )
6 A! M; ?3 I* @* @7 @4 ~ - [2] => Array
' }& B& k2 o& S! H+ |1 } - ( B' Z* ~" F1 w: p' [0 |' M' ]
- [cate_Id] => 2) r7 l3 I! t( T* g8 Y h
- [cate_ParentId] => Array3 r8 j* w3 `* y8 U5 V5 E
- (
1 L+ X+ V* n, @6 A1 f0 o - [0] => Array5 ?' [: }: ~' J, W
- (# X! r p9 I2 [: z
- [cate_Id] => 8 o# j1 X( Y/ ^' s- B
- [cate_ParentId] =>0 }* j* n1 h; B" b6 r; C
- [cate_Name] => html
7 D. }" E! U- z, u1 V7 [ - [cate_Intro] => html学习, t6 N: D9 H' o1 {" L5 O+ M6 U
- [cate_Order] => 02 ?" u# A+ s- O" e
- [cate_Icon] => icons/1.gif
z8 U/ }$ D( G - )
复制代码 四.把树型状数组转为html7 D5 H7 N+ ?/ N, K8 o
代码如下:
. w% F- ~5 Q1 D) C8 c1 ?. K+ x- function procHtml($tree)* X0 x9 h1 N* K# H+ c5 n
- {
2 B, l* a& f8 ~. H - $html = '';
& Y2 _/ Z0 J/ u$ u, |8 ] - foreach($tree as $t)1 G2 p. |- X- U' j# n' `- G2 m) Y2 R4 z
- {; C4 }+ ~6 F; t3 ]2 a% y* B5 K3 V
- if($t['cate_ParentId'] == '')
4 C U6 n5 [ N: U4 a - {
% J2 P2 D5 y* u9 Y. E) V' f- C& i - $html .= "<li>{$t['cate_Name']}</li>";! J0 u8 L- r* y9 V
- }& w; a/ x0 H; \/ I$ G2 y6 n4 \
- else
& H. g* L6 S5 y* e, t8 m - {# E! r- J- p1 g" g% U# U
- $html .= "<li>".$t['cate_Name'];7 Y5 g* M' f9 w& n6 D9 N9 w/ O
- $html .= procHtml($t['cate_ParentId']);
& V1 ], g& t5 w1 Y8 c0 `1 B) i - $html = $html."</li>";. R$ Z! B H V1 \+ `3 w8 f
- }. [0 r8 T9 K4 V( v% ?
- }
- e6 t2 `( H* X8 u" P4 Z3 U - return $html ? '<ul>'.$html.'</ul>' : $html ;' _3 l7 X E1 J7 B
- }
& G W- P; S7 F$ ? - echo procHtml($tree);
复制代码 输出的html的代码格式为:2 O' E- q: g! \( {- S1 P! g. c6 U
- <ul>
" Y! p% [4 x0 w. n - <li>往事如风</li>
& {5 g2 Q5 ]# u9 y; R - <li>水煮三国</li>
/ W+ c& x: {, G+ A8 N. v/ S$ M - <li>技术学习' Y) ?) ?; r/ _1 y7 v
- <ul>
7 }! r8 K, E( q% z - <li>html</li>
, _ ?& w3 \, V7 a - <li>css</li>
* T: P7 N- h! |1 H8 r - <li>php
f. s* X+ b! a+ C8 h# | - <ul>
3 }, O, S/ h; ]' c - <li>php基础知识</li>) E# G1 R+ L6 O+ C6 |- V( X/ X3 [' `' j
- <li>oop</li>
. N3 i$ U. D7 Y3 t/ a8 L" Y - <li>php安全</li>
复制代码 五.代码整合
0 B q8 {; E i) O# u* ]% `3 g E5 V+ c- function getTree($data, $pId)) c O4 y) W1 E A! a7 Y! `2 L
- {1 X- `2 E7 k: F3 `2 m( i5 J
- $html = '';
; l! y" `; Y6 Y$ V! @3 [ - foreach($data as $k => $v)4 C3 E4 ^9 c& v& _
- {6 j: D( I4 S) M
- if($v['cate_ParentId'] == $pId)/ G9 q Y+ F/ [' ~
- { //父亲找到儿子
l" }' i! B- ~ - $html .= "<li>".$v['cate_Name'];
" R0 `& c6 B9 m: G. z6 o - $html .= getTree($data, $v['cate_Id']);
$ }. w( f+ a' o7 M/ K. z+ r - $html = $html."</li>"; i& p. y6 i5 s: r, Q( d
- }
0 h% b* z8 p6 W% ~' g2 a: E - }+ ^7 ] L# K% m4 g+ z# O
- return $html ? '<ul>'.$html.'</ul>' : $html ;
; q3 l4 e9 @' H. @6 F- \8 H# N4 p - }; D9 y1 R: K$ u$ _
- echo getTree($data, 0);
复制代码 六.增加CSS样式
% ]& u/ U; c X# g( w. @$ q
% }& e& G5 V# F+ B- n
7 D3 s$ _4 b. o H1 K第二种是从开源网站上看到的,非常非常的简介。
- l" e% V$ F. G3 h2 |) n* U$ z4 g: u( [- <?php2 H4 e3 }" W9 Z
-
* E# w( g$ {, U: y - function genTree5($items) {
$ n, J3 P7 a, o) g3 G - foreach ($items as $item)
6 _5 s! G) J; j0 k" @ - $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']];
: d4 E; A9 H$ ]! R* g3 {0 R - return isset($items[0]['son']) ? $items[0]['son'] : array(); 6 J7 T0 }" F3 h& t
- }
+ T3 w0 `. ?; J -
2 E/ k, Z3 |7 I! ] - /**1 I$ I& l l$ L+ b" R1 ~4 }; {
- * 将数据格式化成树形结构
. T" F( V! I0 U0 l, V: @4 I8 M6 I+ t - * @author Xuefen.Tong
{% T& s9 C; u1 I; N/ v - * @param array $items# O- ^4 S0 e0 x/ Y. }
- * @return array
" H& C. H2 Z* P7 B9 ?9 z h6 e' g& u - */, Y7 v7 t* B! p. U8 ~1 b
- function genTree9($items) {% o2 q4 r- ]2 s2 R2 E% ]
- $tree = array(); //格式化好的树' t. e, ^. F @
- foreach ($items as $item)
" y/ R1 N/ [9 X4 D: `7 f7 t' b - if (isset($items[$item['pid']]))
T" @ ?5 q/ z8 a - $items[$item['pid']]['son'][] = &$items[$item['id']];" S5 y" a, p+ C R6 t
- else
. l. _: f* `( z% s - $tree[] = &$items[$item['id']]; g0 p& P9 }; c+ o$ T, o! ]; ~* z3 E
- return $tree;( ^! b7 i9 Q8 \; [. m# n- N
- }
- }8 T' U7 T \% M3 f' C) [! f& E - 2 S/ |. e; n! z
- $items = array(
/ s2 d* W$ C- V+ F; k- x - 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),- U& R& T+ N7 O7 W
- 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),
1 q# R/ J5 p- t( H- ^9 l+ ? - 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),
# m- I. j0 K: M" @* G2 h+ r5 P - 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'),1 a7 G7 d2 C& z" R6 u
- 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市'),3 @& S( Y; L/ z( x$ }! R
- 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'),( @+ s+ p7 N/ X; N1 ^
- 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'),. |1 O1 k0 p _) Z
- 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'),# `5 x- t0 h2 z$ J; G/ ^; _
- 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),
. E0 J- B; }( g; z! z/ c. | - 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),
( i0 J7 _( ^* l' w0 n - 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),
3 }9 Q2 y+ Z7 D - 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学'),
7 l0 b9 L4 Q A: X8 R* L/ o# _ - 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市'),4 V; H1 Q5 o& ^1 J: y
- 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'),8 S9 O! ^ D/ K M. O7 k5 H8 |
- 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县'),
3 a7 r% u/ B1 ^5 J7 P x - 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),
- o4 ~2 ?3 p6 Y8 j - 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),
' n, {% {% @. J! o9 g+ M# C1 Q - 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村'),) d/ p2 E z0 F E. j* u
- 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村'),
3 J. O: b0 g/ }6 J5 h- o9 c3 i - );2 s. d& r/ y& A7 Y
- echo "<pre>";
( @! b5 I. q4 V/ X9 c* e- E, g1 N4 S - print_r(genTree5($items));/ R4 Y( g, H% @3 f3 e
- print_r(genTree9($items));% a; J( p0 w. a
-
& m3 q; k) }9 U4 F4 e0 B% ?. A& H - //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
. J( {3 [4 J: E - /*
4 ]( F# r5 N" c% ~" Z; G, f# t - Array8 e3 a& w6 O- e
- (- L! k' Y g7 u8 o% Y/ ^
- [0] => Array
6 A! E9 K% @8 C$ q j - (
3 X u: r$ F6 [4 m" Q7 z - [id] => 1
2 ~( ]& V7 _! ? - [pid] => 0
& u. B6 k: j, {% j - [name] => 江西省' h+ D E- D, J; `
- [son] => Array
6 X% j- R2 E- J& O5 Q1 \ - (3 b# P8 y: K& d3 U: ~
- [0] => Array
` {" ]- O! `5 e1 Z9 Q9 W0 n - (, R9 u* |6 p! O; f
- [id] => 3
! O- f( Q. \- g& b - [pid] => 1
7 D& U. S* [# `1 }7 E/ R - [name] => 南昌市
+ q4 C3 D5 {) n- y+ H& a - )1 p d( m, K0 ?, h
- , }& W) P3 j2 N8 j' A6 u
- [1] => Array
- ?/ W6 s$ V6 M, ~. k* c$ B0 G - (
/ m; d1 J4 x* @3 a- O& W - [id] => 13/ y9 u+ v( l3 S9 A* W" e
- [pid] => 1% H4 w+ X) ^% y% z. R* z
- [name] => 赣州市
: H4 m8 z \+ G" ]* W4 x( F - [son] => Array
- u4 D; e& S4 P! A - (
& e3 w; p5 J W - [0] => Array
3 K, Q s2 Y% ~/ d* P - () N) Y( e5 L, T2 t6 |# U
- [id] => 14* @: \# K# g0 f3 l& `
- [pid] => 13
! d. h/ W9 ]% d, Q, S- d - [name] => 赣县- T; Q8 a6 e2 l0 b4 g' @
- [son] => Array
% r6 |4 j: d8 o' M2 V - (2 [' ]% u+ J7 c7 f) m
- [0] => Array+ I! w# _* |# C& s
- (
/ I3 _7 P4 x/ o# G - [id] => 164 p' m( w5 k' ?( ^3 l
- [pid] => 149 r$ H( ?! W: [+ x* `- F) G2 |- }
- [name] => 茅店镇
( S, ^; x+ f4 x) G8 @ - [son] => Array
" C* U1 r; g; N0 R8 b" R - (4 r; n' B' Y# l
- [0] => Array# ^+ @$ I$ F H H
- (
- F% u1 ~8 a; l$ r! p; o% w E: r; Q; v - [id] => 18
b8 M3 v/ D( o; b+ p - [pid] => 16
/ J8 q# P; z: m( l6 Z - [name] => 义源村
+ T: C) _ I4 A0 Y% Y; }% b - )
3 T0 V0 R) Q0 Q - 1 J7 L1 ~; J- d9 g0 ^
- [1] => Array
/ u6 `% A) o' L! i( ^, K1 j - (7 d, } b- e! |1 U+ ]
- [id] => 19
3 G: C/ t- z, F. @4 `5 q3 B2 W - [pid] => 16
0 T; R) ?1 ?6 h# ~3 @1 a - [name] => 上坝村
- W6 o" v' W, c9 ? - )
& t6 t+ E( k+ ]8 ?) ]) s: F# | -
, ?! a0 `5 B: Y/ E# i0 k' f - )" _, e8 X ~, Z4 l: G
-
7 D) G. } R0 K' |$ L5 M - )0 k) ]( x3 P9 R( k, W
- & i8 V! [4 Q( ^1 K
- [1] => Array
+ o3 H9 |" W: {, N& M' g- R - (
4 K3 A6 W) s8 Z! x - [id] => 17
: j5 g+ D2 Q' ^" G( k - [pid] => 14" k! a% `+ A W7 W' v$ f9 Y" ^- a2 b
- [name] => 大田乡9 o. j0 t. H0 A/ z1 c
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- [id] => 156 z1 p% i0 @, e
- [pid] => 13
: J8 j5 N s a8 [ - [name] => 于都县
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- [id] => 2% ]" s0 c( _7 e+ ^0 i
- [pid] => 0
6 H u9 y" d4 g0 [ - [name] => 黑龙江省
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4 T: f, k" @ F - [id] => 4
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- [name] => 哈尔滨市/ W, D/ T, k; Z; A/ Y
- [son] => Array2 z, h( V+ e. J$ k
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- [0] => Array
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; ^+ L- _- q5 r; e( L - [id] => 6
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- [name] => 香坊区, ]7 w3 C8 V; N6 n! e
- [son] => Array
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- [pid] => 6
; V5 q$ O9 A. O5 o - [name] => 和兴路
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4 ^4 \6 b: i% M2 Q- I! s3 h - [id] => 10
+ L8 q3 m* Q& k6 G# J8 Y! L% B - [pid] => 8
0 C9 R" T& c5 b7 Q6 h J) ^- y - [name] =>
+ r5 Y0 M) D2 D- ?/ F- T - 东北林业大学. K/ W. o6 b3 _
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- [1] => Array
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+ I) l. v4 F/ ?& R - [id] => 12
6 Y* Q# A& r( E2 f - [pid] => 8 w4 Z; I$ s4 d: `
- [name] =>
0 R* A& r$ ?$ o6 x% ~: [ - 哈尔滨师范大学! L8 K' p9 a. F8 u; @' s
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! f7 [+ \5 n. k* F" W; h. a - [name] => 南岗区- X: l `. }1 Q
- [son] => Array8 w7 f; m% v6 l) l( d- G) |7 ^
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6 ]+ Q& T- a7 S - [name] => 西大直街. R0 d, @ l2 J4 r' u
- [son] => Array
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- [id] => 11
8 V8 I; N; }2 V: J* c - [pid] => 9
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$ U2 R' Y* ~! Y! E. i" Z - 哈尔滨工业大学
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- [name] => 鸡西市' g/ Q1 ^: A2 \% x) z: L" q7 Y
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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。
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