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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。
" J/ q# R6 y& T一.数据库设计9 B" u8 c# s1 q- z8 E1 p$ N4 t, l
- CREATE TABLE `bg_cate` (1 c* _, r% q: I( Y$ F! U
- `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,) J4 I( {( w9 V I, ^! P* ]0 x
- `cate_ParentId` int(30) unsigned DEFAULT '0',
2 G2 R% ? b4 B: _& S; A - `cate_Name` varchar(100) NOT NULL,
. N4 j# _, Y, u& C% s/ b) e - `cate_Intro` varchar(500) DEFAULT NULL,
; x9 f9 W# H$ c1 |* z - `cate_Order` int(30) unsigned DEFAULT '0',' M; B6 n. X4 o! o) t1 }
- `cate_Icon` varchar(100) DEFAULT NULL,) E! H: t/ _& i- C/ W
- PRIMARY KEY (`cate_Id`)8 t! @ S0 D1 X. P0 B3 @5 A
- ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;" J1 |4 T9 Q/ C, G8 X
- --. _, C' w4 r3 K1 Z% E' L
- -- 导出表中的数据 `bg_cate`
! t6 n% S; y \4 P - --
^& l0 z. p$ Q/ O( S4 w! o. X - INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES: d* h5 Q7 G9 m! F
- (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'),* R; F$ J R! B
- (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif'),3 N" r5 u0 S, ^3 L3 V! s
- (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'),: `; A& z1 B3 ^+ p1 b( s
- (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'),
, w+ @2 S& z! d& B3 z - (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),
/ o# L9 i/ U4 z0 f1 ~5 p - (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),1 ^& P8 v$ M0 B
- (8, 2, 'html', 'html学习', 0, 'icons/1.gif'),
( `& \# q! _ K - (9, 2, 'css', 'css学习', 0, 'icons/1.gif'),% g! B0 k7 L2 [2 R7 S: _1 P1 r+ n! q ]! A! u
- (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),
" w' z8 y) n- Z# C, p7 y3 L - (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),
$ ?+ Q. H! s, I! W& \ - (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),
! ~0 \- \- t$ L - (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),
/ U& H2 o) _3 a" A% e9 b - (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif'),
0 d& w" M: ^" Q0 ` - (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'),
2 ^9 [+ a3 N1 s/ ~$ ^+ t - (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),$ Z3 L3 D, G+ k w l' b
- (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),
?, R, ]! D" T4 Q. b - (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif'),7 r4 ~- Y! f9 D A. c9 Y. }& M8 o. d
- (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'), @4 W2 a, q; H- ]; J% m( C
- (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif'),
4 M \% M A6 y% m \" p - (21, 19, '学习', '学习', 0, 'icons/1.gif'),8 V- m' r$ y# T \9 ]' V
- (22, 19, '运动', '运动', 0, 'icons/16.gif'), k+ x: v7 D8 @ m$ Z
- (23, 19, '旅游', '旅游', 0, 'icons/24.gif'),
2 f) |2 }* m6 Q6 a& z Y9 q - (24, 22, '排球', '排球', 0, 'icons/9.gif'),6 i2 b+ e @ _/ t8 J
- (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),4 A+ H) Y: M9 ?: v. Z, ?
- (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),/ V8 d2 e: h* |* i. R* E4 F
- (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。% X& G# J: w/ ^/ g/ Q3 t0 u# E
- require_once './classes/MyDB.php';
4 ]) G2 {* F& e6 B" | - $con = MyDB::singleton();
7 M0 d( v1 D5 g& F5 x% ~: L - $sql = <<<SQL. j4 h4 E; b& c; s" e# X
- select * from bg_cate cate
7 a; N- i& \/ X/ J( c" D - SQL;
( r6 n: C. M- ~ - $data = $con->getAll($sql);
3 z1 e- S( T* a - //print_r($data);
复制代码 数据库操作我用的是pear类库。3 h2 X' E4 a+ q* }0 f i5 ]
最后的$data的数据格式如下:
3 s* \! F6 u. P: h- Array
4 b* y; B. n+ J+ p) _" a" s) T; S& F2 t - (
! s4 g( r/ K' m) v - [0] => Array& Z) \$ Z7 X) w: ~8 m; ~
- (" g% Y& S) {4 D+ b. `
- [cate_Id] => 4
* B7 y T; Q; w8 m - [cate_ParentId] => 06 Q7 V& q- s- T4 ^5 V& `
- [cate_Name] => 往事如风) M( M- T# Y- d- r# G
- [cate_Intro] => 记录往事
0 u* |0 o$ ~- t' h7 w* u+ d - [cate_Order] => 0
+ ?9 }) W% h6 }2 n0 o, i) M - [cate_Icon] => icons/6.gif
( d" j* } @. W5 a8 V3 v - )
) d4 ?. u) H. G8 Z* ? - [1] => Array
4 M3 {+ e* D, j5 E, B# E: I - (
! ^* r) R& E6 F( u1 w - [cate_Id] => 5. n# N" }* s- L2 T
- [cate_ParentId] => 0; S9 H; X* ]3 M' J6 X/ {
- [cate_Name] => 水煮三国6 X, @( [6 c: o/ t7 d1 v
- [cate_Intro] => 品位三国智慧
( m! {7 H6 t' l - [cate_Order] => 0
' f3 y% ?! ~, q, q" w, T5 g - [cate_Icon] => icons/3.gif. }7 _3 ]( X0 }: U9 |% c
- )
复制代码 三.把上一步的数据转为树型状的数组
" V7 s. r& n+ p; x! [& p7 d7 @2 X, m代码如下:2 t! P) a5 }1 i* c
- function getTree($data, $pId)0 U& A- ]- G$ y$ n0 u4 `; g
- {1 K& z# Q8 v* y+ Q1 U% H
- $tree = '';
_( h3 B. f- e5 }4 Q3 e n8 I9 t - foreach($data as $k => $v)
& f9 u, ~% E# q& {* H3 F( Z% Y - {
6 [9 J: f3 y& a0 h/ ? V - if($v['cate_ParentId'] == $pId)6 M0 s( `; V5 h Y5 p6 b
- { //父亲找到儿子
. y8 B1 E, d+ D7 Z" x - $v['cate_ParentId'] = getTree($data, $v['cate_Id']);
+ o& `: a1 t( F6 r6 L5 F* r# n - $tree[] = $v;
- ]. b' G, s j, f- M - //unset($data[$k]);' C4 Y3 ^" ]. ]- ^4 ^% _
- }
$ ^2 Q& G) D1 J' b- {: p6 v - }
y6 P7 j; X. i+ j+ \, G& c - return $tree;
1 i2 }+ s' S0 v6 T - }2 P& b, m# p' m! W k
- $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:% ]* s6 s% q/ }+ G$ W" K
- Array' B7 K/ F% t' B9 X
- (" |) s, K0 @' N" L$ G2 j0 g
- [0] => Array
4 b7 B! r/ X: Q; k' L6 D' p - ($ k& l3 n/ V4 Z M0 l6 S
- [cate_Id] => 4
4 G, o0 J* S& k4 r& n1 S9 o& G) c - [cate_ParentId] =>
8 _/ L! C* a( u. @ - [cate_Name] => 往事如风
1 F6 ?' C$ _2 o6 O - [cate_Intro] => 记录往事; e' ^5 T4 G- _5 S q. v, W0 `
- [cate_Order] => 0; B' X3 {( K3 Z
- [cate_Icon] => icons/6.gif
; O4 C: h' U+ p0 o7 l' } - )% _" |+ G# [9 z% _1 N+ n5 v
- [1] => Array
3 h) Z M3 t" q7 u2 f - (7 F, C9 C6 `: O- K; ]2 u1 N
- [cate_Id] => 52 E& r3 b% R* c0 u( v$ _! _
- [cate_ParentId] =>. v) M1 Y8 G+ E/ i. G2 \8 o5 P
- [cate_Name] => 水煮三国 b9 D; W3 [: c7 _) e5 I' \
- [cate_Intro] => 品位三国智慧
* \1 @! `/ b' `5 `0 j% B - [cate_Order] => 0
6 e3 E/ v! T' n5 G& C) i: d6 h - [cate_Icon] => icons/3.gif
1 c: `% y/ N- n/ @ - )( q: X2 d5 Z3 K) g2 Q5 s' f8 C
- [2] => Array
# g. C! R9 O( c5 w) t U* [4 l - (* q8 L& E8 c- U& w
- [cate_Id] => 2: X4 V8 d B0 X5 u1 L9 H! b$ q0 n
- [cate_ParentId] => Array4 n: J( o5 H, K+ ]: {3 Z3 W
- (# `# b" A& r) v* ^
- [0] => Array: D! `2 i: V2 G" \1 e
- (8 B1 `1 g8 ?8 v2 t* p
- [cate_Id] => 8
( g2 i. _; X3 U% U. h1 a) U' f7 Q9 q - [cate_ParentId] =>
! b' O; L+ R5 Y - [cate_Name] => html
: T: h# y. _$ w9 q5 k8 [ - [cate_Intro] => html学习0 D6 R# S8 \2 c0 w0 V( t* W
- [cate_Order] => 07 Q6 h& V" N% O3 ~8 |5 I
- [cate_Icon] => icons/1.gif
2 V3 y2 J# {8 D: b; Q, Q2 j U2 e - )
复制代码 四.把树型状数组转为html
, l" B- w: _* |3 w; t5 U7 w7 @代码如下:
7 U' O8 x2 }3 |5 w* ~8 v8 }, P8 h- function procHtml($tree)4 ]& e' }4 G' m8 W! C3 h) Z0 {
- {( @4 X h8 M; ^( n
- $html = '';% g% y- d8 f5 P# e# i* {
- foreach($tree as $t)
. r* q7 h& q: t. {' ? - {
( u5 u! L) \" Y9 E - if($t['cate_ParentId'] == '')' g7 i5 C0 J5 \" o9 | H% O
- {
- [( _* W4 V& a9 L - $html .= "<li>{$t['cate_Name']}</li>";9 h+ [; c) i7 E( x; W
- }
% j0 E9 O( c3 T& Q6 z - else
: I4 g7 g, p! g - {0 M% P5 _/ j) L+ G+ a" X8 R) z
- $html .= "<li>".$t['cate_Name'];
) \! x g( @" n7 f; d3 t - $html .= procHtml($t['cate_ParentId']);
: ^' N2 Z8 _* Z+ e# t - $html = $html."</li>"; b: ?5 l) V! j4 @
- }
% r$ ^* h* _( G, O) |) I$ l - }1 }' L; s! ?2 I' D) [
- return $html ? '<ul>'.$html.'</ul>' : $html ;4 \6 l6 \8 S: `& ?6 S* a
- }
! Y5 {' [ p3 W- h* m& V! } - echo procHtml($tree);
复制代码 输出的html的代码格式为:
5 L Q, u8 W u- C* \1 S- <ul>
: n |' O; R+ G( l' i% J# T - <li>往事如风</li>
3 S; `, o; i0 ~5 B3 _; o - <li>水煮三国</li>7 M4 v9 D3 C7 e3 I( S# r
- <li>技术学习
3 u. r f. @" J; ]7 t# b* o - <ul>0 ?' g2 V% @% C; @7 a
- <li>html</li>9 O5 s$ S! j( t+ n
- <li>css</li>
' M; b: J5 j1 V1 V) ?% ]3 W" b6 d$ R) u - <li>php9 R( ]( }9 e& Z5 u5 |" `* ~
- <ul># M: L+ A% Y, n
- <li>php基础知识</li>9 s$ E1 c! `5 D! q" W9 J. L `4 i" ^0 u) S
- <li>oop</li>
# Q, v! q& I6 q0 w: o - <li>php安全</li>
复制代码 五.代码整合
6 G+ C# C9 z" A& S( s- P- function getTree($data, $pId)3 q4 E3 c8 D: }- n: F
- {
3 W% _9 r! g# L: }; U: q - $html = ''; O- S: t; X$ `# F
- foreach($data as $k => $v)
9 O* R' j) {" G3 r5 Y( r' S) L7 z0 V - {4 {- i+ K; C% p7 B
- if($v['cate_ParentId'] == $pId)" m; t, W3 v( y5 y+ m1 `
- { //父亲找到儿子
5 e x7 B: v7 M+ D+ m- q: \7 j - $html .= "<li>".$v['cate_Name'];
( F: z0 T0 Q+ y; G. i - $html .= getTree($data, $v['cate_Id']);: s+ v* l/ B1 a7 T- F( i
- $html = $html."</li>";
# }) F) D. r; B- }% S4 d+ T - }
6 _ k- P( s7 l; c. m - }6 R; ~) U( @, C4 W1 P8 R% N8 ~
- return $html ? '<ul>'.$html.'</ul>' : $html ;2 s1 N8 \0 V, ]$ Z
- }
1 k, X; Y5 D# H3 u - echo getTree($data, 0);
复制代码 六.增加CSS样式
2 J$ }6 t8 K/ }! v/ ^" y1 R7 w' M
; t! [, J! k" v" y
2 i+ M$ t: Z4 y+ N第二种是从开源网站上看到的,非常非常的简介。 Y7 X+ J. G! D
- <?php
) y# w" C3 h$ Q% w. c; Y - + f5 B0 L6 }- ?/ ^" _1 L4 O" q
- function genTree5($items) { 2 x7 ]5 g5 F3 K
- foreach ($items as $item) 3 }8 J( r w' N8 c/ x4 q
- $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']]; $ W; x( W# C+ K7 U k8 O- a' Z
- return isset($items[0]['son']) ? $items[0]['son'] : array();
( d$ }. B) P" C& g8 `! I - } 2 x) F- w5 B) }& S: T
-
# d4 s7 K0 q& i" T - /**
; g! g+ e, y D - * 将数据格式化成树形结构# {6 Y4 l1 s( c- a
- * @author Xuefen.Tong E3 X; N- g/ t% O. U3 e# I
- * @param array $items
: j5 t. w6 ?' j, Z$ O2 v - * @return array
: b6 W# O+ O6 L: ]3 D, P/ o4 b - */. J1 a/ k0 J3 x6 b% c1 q* O
- function genTree9($items) {! o& Q l% C" X1 Z# j
- $tree = array(); //格式化好的树. B! Z( E( d0 L: d. e
- foreach ($items as $item)
9 ?- U# G3 ^ I9 `0 t2 }1 w - if (isset($items[$item['pid']])); c7 @. @5 ^" r" s
- $items[$item['pid']]['son'][] = &$items[$item['id']];
" c# v2 P9 ?2 p# w5 L1 x4 @7 _- O: A - else
2 P7 w8 D2 R' `# C# l9 Y - $tree[] = &$items[$item['id']];( W% N2 O) G) F0 n/ d
- return $tree;/ ^/ j1 | W$ L) E: H! e* ?- ?! D
- }
1 L& n( K# u; G( L# T; J' }& ? - ; `6 `0 m( U. r, t# U" \6 e }0 R
- $items = array(
" N$ |- |$ b L# u1 S - 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),
5 `2 \) k2 f+ ^1 q - 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),/ u2 Y+ B7 [2 K( L$ A. O8 w
- 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),
+ [3 H+ t- D+ o. @ - 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'),* `, t, H5 t9 V# l$ d+ }
- 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市'),
. x) b) c" a% Z6 d; @- J - 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'),) F7 a, V9 H0 ]: [# w9 D
- 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'),
7 A2 Y; {; s4 R6 J; ~1 X - 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'),
+ @1 }0 q: \" x2 }+ C- \+ ~/ D - 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),
. G$ Q4 ~7 v! S7 A* p7 x5 z0 s - 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),! Q6 W, y2 }5 u# i, M
- 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),
0 T" K/ t0 f' A/ e8 i( x - 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学'),
0 U, x' R) v9 \9 l - 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市'),
" S4 a; G8 i5 V h, ~% [ - 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'),
+ i5 U' R2 Y- {" j( g - 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县')," K5 M$ Z/ }! N
- 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),
; l5 l6 m4 u2 a7 I - 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),
8 h- v1 u: i$ s U M+ { - 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村'),
0 f, O! c9 e& L k9 V% b) W+ `" h7 l+ ~ - 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村')," c- |) P, S( \& y
- );
( T2 s& f3 t, i1 {1 o - echo "<pre>";
1 f4 [3 m1 F5 H; ]3 f8 W" V% F' v* w - print_r(genTree5($items));5 t+ g- t. x" U- @; p* S9 w. D0 v
- print_r(genTree9($items));
) g" y, E; g+ ]2 E - - r! y- H5 G' v4 ~, L) m
- //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
% Y; Y& W+ v* W) R - /*
! t& j9 C5 S5 \# Z* A2 R - Array
9 ^. X0 b: i' r0 Q( K' [" O) Y - (
3 ~& L7 @. b! O0 Y! C% S7 A1 O+ N - [0] => Array* g9 J6 ?' M, A9 s
- (
3 G6 R# W9 Q/ M - [id] => 1
' n" R2 B) y: S' }% [ - [pid] => 0
9 z3 D0 F8 S7 @- d; B - [name] => 江西省
/ H% Y" u* } K - [son] => Array
3 c; C/ |7 L+ V$ k$ E - (# ?8 {9 }. I: G- }
- [0] => Array
6 R( @8 j9 M* ~5 i; o7 F) I/ I - (
: E( g# k# e) c; h - [id] => 3
+ J" i+ M* d% V6 K4 U6 ? - [pid] => 1
% K8 v! U2 Q7 ^- p( d" z a - [name] => 南昌市
* g' _3 ]5 `& e2 G( q; p - )6 ?$ q! E: C2 d# U1 B- F, s) s% {% g9 V
- - v$ s4 m( v; K2 @
- [1] => Array" \3 A0 y. w" G7 w. G! |
- (& T, D$ P# e. }5 g$ p
- [id] => 13
6 M0 N$ n- ~. d6 d3 w, l- r( f - [pid] => 16 @* e9 a: B5 D
- [name] => 赣州市0 S" H- P" S) S8 A; ?& H9 j
- [son] => Array1 X5 F+ A$ R, L3 M" I; ?
- (
( O7 f, c# `# c2 [ } - [0] => Array
: E+ O* ~$ L2 W5 u. \8 n+ t - (
5 ]% p }# b! F0 k8 {3 F - [id] => 14
% M( J# I7 m$ H6 h - [pid] => 13
% Z2 K3 m6 P2 ]/ a& A - [name] => 赣县
9 B8 m( G! d. _# a4 c0 Z' S' K7 v - [son] => Array) k h1 E- v; l% k+ X0 F. T
- (
/ i: a! |8 [, c: B" r - [0] => Array
9 ^' C$ t5 Q2 o0 X - (: Y7 V4 C, Z% F. D% A
- [id] => 16
9 v& ? @6 D, m7 U - [pid] => 14
2 K# Z! c! s% z, g4 H. b" f2 \ - [name] => 茅店镇6 N# ]1 ~: ^1 E8 J; T. E+ K
- [son] => Array
2 n3 K A, J: D& d* u9 @" S9 u1 G - (: C' d* W4 I! n6 k! C
- [0] => Array
/ e' i+ U: ]: M- t& ? - (9 g. g6 C. G' L
- [id] => 18; y6 a9 ^: t4 _/ d' p r, S
- [pid] => 16
4 z# i/ ?! m) J- S. a2 q - [name] => 义源村
3 g5 d) j' [$ O3 ]! }1 L0 n. M - )
) c9 ?2 I) D: P, Z) z& f -
4 ~& E! ]0 y. b$ C; I - [1] => Array G) e. U! v8 F2 S# \
- (
' ~: A% a* X6 Z& P/ @ - [id] => 19
, N9 u: @. s+ ] - [pid] => 16
6 K& W8 z; e. Y' X7 d - [name] => 上坝村" X# L8 q2 g- R+ L6 \0 U" i) i
- )- ~7 S" r P7 u: T3 d
- ) W! b d0 x0 A: h
- )
& a. s0 Q( p9 f1 } -
# K9 A7 q9 x5 Q$ i3 o0 T - )5 _3 r% D% _' {) h% _
- $ E- p6 m5 {! v: d
- [1] => Array7 _: v) f( f! c/ r* R+ s
- (
4 r8 Q q' B3 D) n& H1 V - [id] => 17
; l+ F; S& q! O - [pid] => 14& D1 f4 D7 E! {6 g7 C
- [name] => 大田乡
9 c4 k$ a- _% f - )
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- [1] => Array* [7 u0 {9 E6 u, y9 l
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- [id] => 15
$ W9 b: P- F0 G* J - [pid] => 13/ N" n0 N3 t' }3 M
- [name] => 于都县
6 E' w, m8 p- }$ a2 C, v7 |3 V$ X - )7 _4 m* f4 `; O4 U9 i! t" W
- / d$ y5 X) p) p+ I3 @+ @
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9 k/ H7 t( H& z( z - + m! B; u# \8 |: s1 i2 n. C! ?8 Z- c
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/ `6 Y+ E# Q) y" x% b. j - (
/ t% H4 N. ?5 Q - [id] => 2
6 p/ p% |9 I. g9 C! L - [pid] => 0( F6 w6 n) U7 A0 N
- [name] => 黑龙江省: k* L6 p2 e! e# Q8 X+ K- m: s' Y
- [son] => Array
0 L5 x; F* s% u1 J& b - (( C9 N7 ^9 K4 O. E! h0 I6 C
- [0] => Array
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1 D1 r3 p$ [9 m7 @' [" M# J - [id] => 41 i4 w2 `' K. z9 L* N
- [pid] => 25 O. `4 ]6 q: ^' i+ K
- [name] => 哈尔滨市
6 S; [/ |6 ]1 x, e6 R - [son] => Array/ `7 X z' h5 B: Q# \$ x9 ^7 J/ Q
- (
9 R# t4 B9 S7 `3 { - [0] => Array
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- [id] => 6
- `! D# K: Z; h4 Z$ u9 a- r* C - [pid] => 4
' q/ ^) S$ ?3 i% n: Y7 G - [name] => 香坊区
9 ~( C, y. {. r$ u - [son] => Array- [5 V; T/ z% H& u! a
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0 [2 ^5 f1 H4 ]" V% Y3 J4 H# L( t! T - [0] => Array t. M& j' Y% m3 c3 P7 G6 M5 ^! r
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6 u2 M4 j4 U2 V( ~ i - [pid] => 64 Y" }/ u2 m6 l A: e/ o. e, Y
- [name] => 和兴路) A7 p9 X- ?2 q: b6 I4 _" L0 D5 M
- [son] => Array
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6 }9 y' L/ b9 u: B% ?& G8 W - [0] => Array
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& f8 z* }6 i5 A8 O$ \1 [0 _2 j' T - [id] => 10
2 _7 L: d$ b. b( `! q4 C" N - [pid] => 88 Z' u- _" M6 |% A& R0 \( `
- [name] =>
* U% {9 N* U5 h! @ - 东北林业大学2 J: e( A+ U! J: j5 i- K
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-
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. L5 E8 f6 Z6 L - [id] => 12$ |% L# P0 `4 E) m* T; X
- [pid] => 8: v* U0 R' g7 g! W
- [name] =>
. v1 @, O! C8 q' R1 D6 z - 哈尔滨师范大学
3 V- A. o5 l/ e, V: m" j6 _ @8 | - )
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4 Q+ B2 z. v+ t/ `+ L" p# h6 u* ~ - )% q1 Q# ~4 |. M0 N0 c# e; B* H
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-
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- [1] => Array. D9 [: l% W+ S. t
- (/ S W3 j! g5 H. r
- [id] => 7/ ^; o0 g: q2 T' D. Y# L5 _
- [pid] => 4
* a. Y8 d6 U2 y `( ~ - [name] => 南岗区& F- I x1 }7 [" w
- [son] => Array
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' U T" g9 g) k8 g - [0] => Array
6 {. b& \) C) y4 d4 ~+ _ - (
. L3 W6 G4 C$ Z( X1 F1 v% \9 i - [id] => 9
2 f( F7 m- Z4 T% C - [pid] => 7
2 Q2 f" \8 u, r. b8 r - [name] => 西大直街
# E9 k' V7 D8 O, g0 B( E - [son] => Array2 L/ W1 |8 e) }2 h' b) i
- (
3 p+ O, _5 _4 Q# J - [0] => Array
0 z# G- j+ f3 T _) e7 W5 B9 J* \# `, ` - (8 f% _1 k9 s. p; A7 d
- [id] => 11
. }/ t: D3 J. I2 w a" r5 L( |& P - [pid] => 9
/ N+ j, }6 X9 L - [name] =>
+ y/ J+ ^) f' Z1 J* g/ E; l4 c - 哈尔滨工业大学. e- d6 n$ \/ P5 `
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-
6 s; a' g" r U9 q5 m1 e; k; J3 o - [1] => Array
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- [id] => 58 x: Y V E0 ]" S5 ^# L% e
- [pid] => 2$ H$ J+ d" V) p" l1 G
- [name] => 鸡西市) P6 T6 E7 w* D y& l
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-
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-
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0 _3 A9 b5 x7 g% m( ~ - )*/
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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