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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。3 S" m) e! o& K6 h: A* ~
一.数据库设计! \# l8 I0 X. L- K0 D
- CREATE TABLE `bg_cate` (
$ `) e' X8 y" r' a* }" Q - `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,' P4 E' f+ O8 A
- `cate_ParentId` int(30) unsigned DEFAULT '0',5 g9 n- a+ k) P% x7 n
- `cate_Name` varchar(100) NOT NULL,
- H# g3 S9 E5 }" G; C$ K+ Z. H+ @ B - `cate_Intro` varchar(500) DEFAULT NULL,/ F& E# x/ ]- r7 g
- `cate_Order` int(30) unsigned DEFAULT '0',3 e/ p0 i; Q) j+ q* u5 l
- `cate_Icon` varchar(100) DEFAULT NULL,; S) h4 c. k" M; ]+ f2 E# w: I0 k
- PRIMARY KEY (`cate_Id`)
5 W0 b. ^: |* ]# a; S' K; T7 d - ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;* \3 F+ c$ L! y& [9 ?4 O/ d3 `
- --
3 V) Q' i7 j) h2 m8 n1 C( v! Z - -- 导出表中的数据 `bg_cate`9 M y; _" q( \$ N, c
- --
) q2 [1 ~3 ]& ^3 @0 R1 W6 q - INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES
. N$ \ {% t l/ f3 q+ k+ _ - (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'),
2 p) n4 R+ C4 ] - (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif'),8 ^/ H" N8 D. M! l
- (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'),2 Q) o- E$ ~5 e5 `
- (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'),9 Y/ k, V/ [# t
- (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),
( U H4 \2 Z+ k7 U4 d - (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),6 T u' `$ ~8 j2 I& o- Q8 q
- (8, 2, 'html', 'html学习', 0, 'icons/1.gif'),
. A9 H: d H$ j, a6 Y - (9, 2, 'css', 'css学习', 0, 'icons/1.gif'),
) f# ^! d( d: L0 c3 _9 H - (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),
# M' K% v# u- D* r - (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),) ~4 m( n6 t2 T5 h& p2 T
- (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),
t" S! J: v, h - (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),0 o- y8 O' q: P" \: Y) x6 F% g% M. q& H
- (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif'),. H) e+ @. l A# m8 h& O
- (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'),9 p* s3 _, {2 q6 n% E* `
- (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),
" I+ k6 {7 c0 M - (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),9 U ^5 p* _% y! V
- (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif'),$ Y- d# [, A4 H" E" D! n0 _5 z
- (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'),
; b; I$ t' ]+ p - (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif'),
. `2 e# ?" ^' H# y" w! V - (21, 19, '学习', '学习', 0, 'icons/1.gif'),! j7 G4 e0 E) r) U" m
- (22, 19, '运动', '运动', 0, 'icons/16.gif'),* m( x5 q% h" n& ~& P
- (23, 19, '旅游', '旅游', 0, 'icons/24.gif'),9 B/ f6 S3 H9 P! `8 f& E6 E
- (24, 22, '排球', '排球', 0, 'icons/9.gif'),) k4 g: {; t( {- ^
- (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),
4 b, }; O+ G' ` - (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),/ W$ Z7 F7 n3 D
- (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。; j! Z, P' `8 c: t% [/ A/ l3 `
- require_once './classes/MyDB.php';
. a0 R( ^5 r- j5 W/ z8 n - $con = MyDB::singleton();4 c# w" d: z Q2 M- S5 X
- $sql = <<<SQL$ Y L* @9 k I7 V
- select * from bg_cate cate" u7 Z6 n; i, I! V6 ?
- SQL;8 Z' H$ N& e4 v
- $data = $con->getAll($sql);
& h" T# e$ ~5 Q$ O% k( u% b5 M - //print_r($data);
复制代码 数据库操作我用的是pear类库。
( C! W% S& v" M1 A: X最后的$data的数据格式如下:) `2 T0 x1 V8 @- X! t
- Array% X/ Z# Y9 D5 `0 P# v
- (
! A" c; j' I. z7 } - [0] => Array* N, v7 j( c. R5 v+ z$ @
- (
5 H3 Q, `2 g& `0 }$ P2 M! s5 y- n - [cate_Id] => 4
3 @# i5 f( {' |2 G8 C' b" W4 a2 ?7 @) a - [cate_ParentId] => 09 z% u# Y% P/ M, Q! M" b$ x
- [cate_Name] => 往事如风' n" p& X, \" w" T4 A. o; u5 ~
- [cate_Intro] => 记录往事
& N1 ?1 ~& E* f/ I' J) p+ r9 [ - [cate_Order] => 0* }/ z9 i" K5 _) ]6 V8 Q
- [cate_Icon] => icons/6.gif5 b ~* ?8 `" b( m
- )
3 y9 I; |' W b0 i* N - [1] => Array
8 X, ?/ @( g# [1 o. r, x - (+ H% o2 q% }6 V0 q6 L4 e. f
- [cate_Id] => 5
q8 f) S% R8 q& I: a' S- Y3 j0 c - [cate_ParentId] => 0
) F$ [2 Z, W. A - [cate_Name] => 水煮三国
1 T. w" R0 U8 P! |/ ~: B - [cate_Intro] => 品位三国智慧5 d3 n) Z3 j. D0 Y3 W
- [cate_Order] => 0% s& \9 ]* m, V" O2 X
- [cate_Icon] => icons/3.gif
6 z- V# b2 q% _( W; f$ h/ P - )
复制代码 三.把上一步的数据转为树型状的数组
" N4 q+ n+ u4 I2 Y代码如下:/ [. Y: Z) G9 j/ R* E3 E
- function getTree($data, $pId)
8 a2 N: `# e( i! y - {
' A* S0 q. K& W v - $tree = '';
8 J+ j y6 ~% L6 J. B - foreach($data as $k => $v)0 A% O! N, X9 F3 `
- {6 b- ]5 n) H* d; |+ f; a6 ~
- if($v['cate_ParentId'] == $pId)
3 Y# `" G4 l/ O8 } - { //父亲找到儿子
1 m2 u" n8 [: V) W/ h/ g - $v['cate_ParentId'] = getTree($data, $v['cate_Id']);% j, i/ Z8 H" O: [9 Z
- $tree[] = $v;# a3 Q* o1 Y, W" b: t8 a5 _3 i
- //unset($data[$k]);: E4 ]8 F) \$ y. m2 ^; W4 P! t; R
- }( d2 `5 p" l* N4 D& ?" Z; W4 G, y
- }$ Q2 k+ L3 f5 @% C( A( ~
- return $tree;% s; M# x1 ]0 G/ ?# ]
- }
& E6 w' b. T9 a5 g1 t* g0 x - $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:
9 n) i$ i* }, }2 I* g' F- Array
( D J7 b- g. t+ r' k- h; ^ - (
5 {+ c# N. V0 }4 ]+ ^# f - [0] => Array
1 G' ?9 L! j; t. D: T - (2 u0 L( H# A: V
- [cate_Id] => 4+ _- E# {* v: q3 B" {7 z/ F8 w
- [cate_ParentId] =>/ t! I; A' n0 w
- [cate_Name] => 往事如风
( r& P* x6 h, X3 Y* F - [cate_Intro] => 记录往事/ p7 A, K% |0 _0 B/ F1 \8 G9 I- C4 u Q
- [cate_Order] => 0
, G- ]6 B% D V - [cate_Icon] => icons/6.gif& K7 a& W1 e H
- )
% I0 @/ C1 ?, C5 e7 @ - [1] => Array
/ R c& E) W3 C: n - (5 z. X9 L! J$ }, _ V) S6 c
- [cate_Id] => 5
+ I: H0 N4 a: A- _+ Q. v - [cate_ParentId] =>
# ]+ a! g8 @9 K5 f- @6 C: w - [cate_Name] => 水煮三国4 \9 }" c3 v# n' s/ Y
- [cate_Intro] => 品位三国智慧/ G, `6 p+ d5 q% L7 t
- [cate_Order] => 0/ P+ M3 t: z2 d5 ^8 t3 q$ w& Q1 J
- [cate_Icon] => icons/3.gif; A8 T9 C' O, L5 ~1 b; V, }9 g
- )5 Z/ V u: r( U# z
- [2] => Array( f8 L$ ~3 w% S3 H* J2 G; d \
- (
: G4 S4 ?! Y8 B$ a! ?4 C( Z8 a( I - [cate_Id] => 2
4 n6 P5 ^: h* C( N; z) k - [cate_ParentId] => Array
$ C% {' S5 F& U - (. j5 Y: j0 ]: V! E& [
- [0] => Array
* G) {1 v% |/ [; x# G' P - (
' ?; C& H6 Q/ x O V- f - [cate_Id] => 8
, H" C- a, w1 C E - [cate_ParentId] =>
: z+ N, T g4 H - [cate_Name] => html
8 ?; a& ~1 B& O( I6 x% E6 |$ c - [cate_Intro] => html学习$ L9 n8 @! C/ z% }( V
- [cate_Order] => 0
6 `0 R7 m) Y8 N% c- _( K - [cate_Icon] => icons/1.gif O Q% o6 Q, u; _) d
- )
复制代码 四.把树型状数组转为html
" K5 \. w! O4 o: [" @; I代码如下:
% e1 Y" a$ O8 B8 L1 m a- function procHtml($tree)
) P1 z7 i8 X0 p9 s7 _3 |- w) a6 C" @ - {
1 ?/ C9 m, [) i* f* u' |9 N - $html = '';
+ H& u* u$ \. g& P4 @( q - foreach($tree as $t)' f. s, @3 F2 F" H% c3 O. u" I
- {& w. a) R4 R# H
- if($t['cate_ParentId'] == '')
8 s3 K, U: y" @: P& o! ?3 ?( Q/ M7 m - {
* ~! p1 y# b" u6 ^* V4 [# Z - $html .= "<li>{$t['cate_Name']}</li>";" U" x. n$ l9 e
- }
) y8 Z. x0 X% Y( A3 Y& ^8 Z5 T D2 } - else& S4 B: V' N% B) v- C/ @( K# D# O
- {8 I( V+ W/ j; [ q
- $html .= "<li>".$t['cate_Name'];4 z5 P8 ^6 u+ g4 L$ a; }: A$ g
- $html .= procHtml($t['cate_ParentId']);5 k9 r A( b6 w- l! `0 p# D
- $html = $html."</li>";9 j6 q3 z: o8 V X+ R8 C
- }
$ k6 \2 l0 j0 k0 [' s - }
( T6 A, R, H, U/ y5 ^ - return $html ? '<ul>'.$html.'</ul>' : $html ;( u- K K: m/ H: o6 Y
- }
* [0 l/ V- W. Y1 K1 d" R - echo procHtml($tree);
复制代码 输出的html的代码格式为:
: n5 |# s: `$ G3 W5 }, `- <ul>9 \0 n1 C$ D7 w2 u; [
- <li>往事如风</li>
( ]6 P' f$ u/ L7 S+ R6 d - <li>水煮三国</li>9 F" u- a2 i; Q
- <li>技术学习
! g& b% W4 P- |1 f# w+ U0 N7 q - <ul>
. d$ c7 B) S E5 q - <li>html</li>
- j0 y7 R/ y, s$ q7 t - <li>css</li>
& B& [5 W3 g. S# f) k; ? - <li>php
2 [+ K; I$ B. U G. z - <ul>$ s) ]* g( {8 ?2 L/ _- ]
- <li>php基础知识</li>
0 c- t) ^9 J# ~, n# j# d- {% F0 x I - <li>oop</li>
# x8 ^& F% m- ^2 ~6 x! Q, E - <li>php安全</li>
复制代码 五.代码整合
0 d: k1 k, z/ P4 f6 R# D- function getTree($data, $pId)
! J, ^' D/ |7 }# p) `8 `" Y; l# ^3 X e - {
9 R1 @* j. ]. g - $html = '';0 B e' n6 A5 M! d \6 y0 M8 Q
- foreach($data as $k => $v)
' z6 m$ ?4 ^7 q) l) C4 o) w - {
# d) z3 c. e- y6 j% o - if($v['cate_ParentId'] == $pId)* Q' K5 M3 u) O: T7 s6 b
- { //父亲找到儿子
z- K) p9 V( p; l5 n - $html .= "<li>".$v['cate_Name'];
% B0 i; U) U" H4 C! |# { - $html .= getTree($data, $v['cate_Id']);8 P7 {; K8 j, G9 _0 N/ p6 g# F
- $html = $html."</li>";1 A2 C/ @& l5 W: b: [! v+ g a
- }
. C0 ~8 j" V9 ^/ G' D/ d* g# A: F - }
7 a$ J5 D6 r- L9 b: m2 H* o - return $html ? '<ul>'.$html.'</ul>' : $html ;
0 s! N# T+ C: A x- l - }
1 T5 K+ D. @- v. d" r k - echo getTree($data, 0);
复制代码 六.增加CSS样式$ h0 y- z) `6 V' v" j) r" a. a
1 U2 x0 s8 z# W, h7 f, m- Q9 R4 V* T! ~% g3 V" ]
第二种是从开源网站上看到的,非常非常的简介。
* Z' I: d+ D1 m0 V. X- <?php
, |" v0 X- Z$ ?, e0 q, n -
) w" f) `' N, w( G - function genTree5($items) { , f _; Z' L' l, G, H& U
- foreach ($items as $item)
l. f- m) N. m+ V" ~4 }( u - $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']]; : {& F4 x5 Y* {& P+ m' E/ h
- return isset($items[0]['son']) ? $items[0]['son'] : array(); 9 u" [2 O# T% r+ _
- } 3 X( ~( {. q0 P+ @
-
$ Q, v% ?( W& \. ?' T$ \ - /**
) ^- \# f$ }5 Z8 ` - * 将数据格式化成树形结构
6 l1 E7 p _1 I5 Z" A - * @author Xuefen.Tong
# ^4 j1 u, A# D/ s5 I - * @param array $items7 u: t0 {0 r, d N& _
- * @return array 9 B# j# P8 r! k( D% V; `
- */
1 `6 ]3 U6 p- @3 m - function genTree9($items) {" L1 F9 M N$ n% z" t+ N/ w* u
- $tree = array(); //格式化好的树# o8 G E6 ]8 I! T8 f
- foreach ($items as $item)" @& N. |$ J& X
- if (isset($items[$item['pid']])), ~5 c+ ~$ ?. P# k; D. @- {1 X
- $items[$item['pid']]['son'][] = &$items[$item['id']];
" K: _; O9 T2 W* m% v - else
" r. K* G% f. c7 \- _ - $tree[] = &$items[$item['id']];3 ~$ f% A: f) D( Z/ z
- return $tree;+ h6 l5 K R0 [. Y2 e/ I
- }
: F( d% R9 U$ n$ F" |$ [) W- W5 e t - + S8 E% |4 z& |% `
- $items = array(
* z' P( I) E& P/ l - 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'), i8 m/ U% \6 G: [
- 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),
- O0 u" s8 Y3 L - 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),* b3 i6 u. t5 g( ]; i/ i
- 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'),* X7 Q7 K m4 `: G
- 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市'),2 A1 Y- ` Z3 L1 n2 j, d/ x
- 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'),4 T6 d5 h& |' v+ X$ [: w
- 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'),; B t5 |1 I/ u4 M" v$ [
- 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'),. o2 Q. T; S, w. h- J: a
- 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),
0 |4 l2 n+ j) @ - 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),
( a$ s, b3 y$ D& W# m5 i4 E - 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),. ^" [) k* {9 k- u0 n
- 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学'),! L4 h& ?9 o4 s) C4 I: O/ z
- 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市'),
0 J; U( y* }- J1 `* x# P7 y - 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'),! N) k$ ~7 d d0 n2 p- C- D
- 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县'),
. U6 I2 i& Z0 |3 n/ r! g - 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),- X; n4 q1 V6 f- g4 q2 B% ^# z
- 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),
+ ^% N7 f o% R9 |& W - 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村'),7 g4 p2 W7 V7 }0 d3 `: b3 @6 b
- 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村'), l# t7 T- u9 q/ V# Y; M
- );
9 h. G" r, s5 a! ?, p7 i - echo "<pre>";$ @! Q, u H; |" S* O% w
- print_r(genTree5($items));
5 X, r/ Z% ]2 ~ - print_r(genTree9($items));- }' t' }2 M3 T- q! Q
- . ]$ Z' P2 ], O3 i% w* ^9 C! g
- //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) l, _7 c9 _. ]1 o5 [7 i ~
- /*, y, I! L; r5 [& z
- Array A, S5 f I, C
- (
: P/ }! N2 a5 o- B% l5 f+ E* R - [0] => Array
1 ?2 a( o% i& D& [ - (
( U z, | ~" M: p - [id] => 1
6 B/ ~: v7 p, P+ ~ - [pid] => 0
+ t/ D* Q, |4 e; y, i x% [ - [name] => 江西省: B" |$ L& i$ f
- [son] => Array
3 S: {* `2 F8 T! C8 n/ q6 z% ] - (: l% a2 d, o. S- K, G
- [0] => Array
1 U1 J' d4 n! a - (
- y3 @4 q. q* _" b; ` - [id] => 3( L0 a+ m" X- I( X7 k: a
- [pid] => 1# [4 q/ d- z) p0 G' o* ^9 o
- [name] => 南昌市2 I3 e1 z8 m% L5 p. @2 ~; ~
- )* a; n0 ?7 i! t e; V7 z- H
- : w5 `6 g2 |1 v! q7 g% T. g
- [1] => Array- w) V6 h# M6 }: m+ Q
- (% U7 g7 s5 n0 f; F
- [id] => 13
/ O! Q4 F( }# W x2 {9 J$ P - [pid] => 18 N) B/ n+ s( s" H1 H* V
- [name] => 赣州市
: t9 Q: Y/ O0 Z1 j - [son] => Array8 ?7 {7 Z4 f, }( H; m' D4 p F1 k
- (
' h& c' H: V* D1 ]& n1 @" ] - [0] => Array
6 n* r4 N- r% l$ v( u - (( V' L W7 s! @" B9 l9 {% `
- [id] => 141 O; ?* g+ X4 f2 g$ V5 r# h* F" Y
- [pid] => 13
$ S% @9 l/ j9 ]% `2 E) O+ f+ L1 X - [name] => 赣县9 q+ A+ \: f- y9 W7 X
- [son] => Array
$ r* N* F0 ~& O' E - (
7 V- p. D& X1 |/ Q3 [ - [0] => Array0 @" l* C0 ~' A$ [( x4 y
- (
+ S( P+ z$ ?* F" S, I - [id] => 16
% ~+ ?/ v7 i7 p" j- ` - [pid] => 14
5 b4 F1 {1 J6 Q# T' S2 S. ~ - [name] => 茅店镇) ?; a# L: a( E& ?8 l Q
- [son] => Array
* s0 c( v6 U* l* q! ]& i6 n - (
, D) G7 q! x0 b - [0] => Array6 {" E2 Q4 n9 L& H
- (9 \ }# B8 m" Q, ~
- [id] => 18
2 a3 U. {/ c: _1 S& h - [pid] => 167 n4 E5 e2 V/ `
- [name] => 义源村+ o1 e7 L1 f1 T$ c
- )
3 a* v; s% ], d -
# S3 c0 i* O0 n& v7 \+ T - [1] => Array
% ]/ x! Q2 z- A - (" r* p/ i! ~2 i3 T3 r2 B; i! J0 _
- [id] => 19 I y! ^) c0 C/ d( o
- [pid] => 16 n6 l3 N3 s- {# z
- [name] => 上坝村
7 o z m0 @! t3 f - )6 e, x5 y! h% z+ c
-
% A& a2 i' O. q8 } - )! e, u/ P$ v" j/ t% y/ j
-
! }! m( C3 w7 }+ q# k# l' B - )
! t) I# T' P4 V, L -
0 s( H1 M" w7 J: z! s1 R* T - [1] => Array
1 V0 c I8 M3 H - (; b& L4 A* `* U
- [id] => 17. t: b; p) U. N4 c! ]9 w4 C' g% f4 I4 Z
- [pid] => 14- W: Y6 x8 l4 L, E# w" {, h
- [name] => 大田乡
# {6 c$ }. l4 w& J$ ?* `0 ] - ), d* y) i# k0 d! {% G, P
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- [pid] => 13* G- [ o/ R8 Z+ \7 A7 _
- [name] => 于都县
$ ]$ `' U4 `& L1 O5 o$ V i, D7 t - )8 U" g+ ^% D6 O4 M3 B, H
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- [pid] => 00 ~; Q. ? s4 C; E8 ?
- [name] => 黑龙江省
$ r" `: k8 a8 x - [son] => Array6 b/ n3 K+ {/ v
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7 Q# Q- n5 `* P# D h - (
5 N/ `6 I; @$ H I7 j8 M - [id] => 4
* x5 C( {# A" c4 ?' p/ T7 c# r - [pid] => 28 U8 |2 z/ [6 m0 k8 E Y
- [name] => 哈尔滨市
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: V+ [5 l, P: v- I+ j; a+ K - [id] => 6
, I: P X1 E6 m* z. [, E - [pid] => 4
6 G" M; q2 d% [& {: ^ - [name] => 香坊区/ }7 c% W* b0 l& Q" L B3 ?
- [son] => Array5 ~' M3 Z+ i# G. `8 F7 ^: v7 t
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T* a" K) j! B - [pid] => 6
% y1 i1 `( G& K) { - [name] => 和兴路$ U( H; e6 G9 R
- [son] => Array
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- [0] => Array( K k1 o, {0 B: d" M8 O
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- [pid] => 8
z2 y, c# i8 F/ w; O" I - [name] =>
# n; ~! Z# \1 t7 D5 j - 东北林业大学
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- [id] => 12
3 A' Q, j+ ?9 n& t) X0 v* c - [pid] => 82 g2 V) w [3 K p9 s! ^
- [name] =>
# Y1 r* q2 F7 D# W' s, | - 哈尔滨师范大学. H- B6 `* o$ g' L, t
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2 s5 B2 E6 b$ L! g& R( X9 v - [pid] => 4
, [2 \2 K' N" |6 M0 ?8 J: l - [name] => 南岗区
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- [id] => 9. s G" H6 s4 x7 a. _; h" H
- [pid] => 7
$ V8 f* e6 S% v - [name] => 西大直街8 s) P& V ?9 f5 q# }
- [son] => Array
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- J/ D7 ~& j1 r/ `5 y: Y - [id] => 11; D/ U J( T; m* a9 |; o0 q$ }
- [pid] => 98 L( |, U X3 I% _
- [name] => 3 p# E7 k+ B. R0 X
- 哈尔滨工业大学
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- [1] => Array R2 ^" S! N# m" g7 N2 z
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- [id] => 5
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- [name] => 鸡西市7 ~% s5 j9 i3 e# v4 S( P8 J2 {7 _
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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。: I+ s. C4 D' W) }2 Z7 F
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