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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。& P& j* n# ^# n3 u. K4 T) t; a
一.数据库设计3 Y( G& q: |- q7 H- k2 } B
- CREATE TABLE `bg_cate` (
( f/ z7 X6 q5 g- P1 c" d3 L1 I - `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,
2 b7 R$ f3 I( N# r4 |/ e5 ? - `cate_ParentId` int(30) unsigned DEFAULT '0',$ H2 E- {& y$ P8 `! v
- `cate_Name` varchar(100) NOT NULL,
! Z8 U% q7 D9 c7 O2 h8 z - `cate_Intro` varchar(500) DEFAULT NULL,
. b! @! t1 J! U3 ?( C: h - `cate_Order` int(30) unsigned DEFAULT '0',& f$ X4 J* h) r, [( s( D% [# Z
- `cate_Icon` varchar(100) DEFAULT NULL,5 ^5 [8 X. s9 ]8 W1 M5 r) b1 V8 Q
- PRIMARY KEY (`cate_Id`). ]" [$ R# C6 p8 N! e
- ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;
" ~0 u. ~& d5 Y# n - -- \. {5 i: f' {. q6 c4 r- p
- -- 导出表中的数据 `bg_cate`
6 Z0 M; F4 e5 V0 ^* F8 t0 ` - --
+ W( [# ]) m& X- Y" O - INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES
& Y: [" V0 \1 p" z0 @' P( t( O& S - (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'),
9 \2 ]0 k( T6 a - (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif'),2 ~- Z5 G3 c. }* Z9 a; v
- (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 i7 z; ~( t. F. @* L5 \, B
- (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'),; g7 a/ p) K+ I* H- r4 ~2 i n' V
- (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),$ h! [. l4 [' j% G& \
- (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),
. c" j6 f; ?/ {. K - (8, 2, 'html', 'html学习', 0, 'icons/1.gif'),5 y# p1 A1 V8 B1 p4 A6 y
- (9, 2, 'css', 'css学习', 0, 'icons/1.gif'),
" }- |- m" g) Z; q* ` - (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),
8 ^1 Q& Z/ |3 c0 G - (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),
5 m, F9 q# e1 }0 B7 n8 g! ?4 ]; X - (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),
* p$ r% J* c- [ - (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),9 P) |" m0 V! A0 C( _
- (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif'),& {6 b& m0 `' L2 s* i2 T, U* M; c$ V
- (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'),* V8 l/ Z- C4 I% x6 w
- (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),
$ T2 o' F* M% A$ u - (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),
: \* k% r* z& ?% w - (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif'),
4 x, @9 X9 `; ]# S" @ - (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'),
" Q2 T2 T. h J; C+ e# |& T7 z - (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif'),
9 N# J0 f5 @4 w+ F6 U+ P' b - (21, 19, '学习', '学习', 0, 'icons/1.gif'),1 m. E$ k; f; V1 l
- (22, 19, '运动', '运动', 0, 'icons/16.gif'),
1 A, u g/ E: W- {6 z2 [/ u+ `1 ~ - (23, 19, '旅游', '旅游', 0, 'icons/24.gif'),1 M o* B* Z I: ^6 v( o
- (24, 22, '排球', '排球', 0, 'icons/9.gif'),
' s9 y$ u4 D5 L8 T - (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),
3 X. \) E! h6 k. E/ D* }" f - (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),
9 _: V5 i1 z6 _- K+ x1 i! N - (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; m# r: Y% s" X9 i& p3 j% P
- require_once './classes/MyDB.php';
/ v! o2 L- W4 J - $con = MyDB::singleton();
: j8 @0 y M' s! B - $sql = <<<SQL- o9 z/ \4 j0 C
- select * from bg_cate cate
7 C! ?9 w* u. `9 K - SQL;. h M2 Z& F6 L7 A
- $data = $con->getAll($sql);# u' ^4 Z* c* |1 L* F+ y& m
- //print_r($data);
复制代码 数据库操作我用的是pear类库。1 x0 u9 w9 h3 |
最后的$data的数据格式如下:
8 I4 d2 }* C: }+ s8 E' k9 V- Array, \6 U1 k d* V7 e9 J* N9 e0 f1 }! C2 T
- (3 `+ L& `# Q) P7 [+ s( N; |
- [0] => Array: T3 P9 B) ]' ?" W% n! h* T
- (
2 S% r$ x4 \* _/ O0 H5 o- w' S. j - [cate_Id] => 4. ~; l( R) p2 L, H8 h* y; S
- [cate_ParentId] => 0
) w+ P. a- R3 R8 B _ - [cate_Name] => 往事如风* ]$ s/ U3 y( z4 M- f8 A/ W8 z
- [cate_Intro] => 记录往事
# N' u$ Z6 F' }- ~) X# K/ A' \5 U - [cate_Order] => 0/ ~# _1 \2 B' y
- [cate_Icon] => icons/6.gif, r, M2 j7 I& \( |6 z
- )0 ]0 ?5 w4 e+ t
- [1] => Array7 v7 s5 l+ g( y( V" }
- (4 a% N8 a" N+ S" X1 d
- [cate_Id] => 5
+ B( W: Z' p) T3 {# ]1 g& p8 Q - [cate_ParentId] => 0
$ R& ?8 T' E2 O% p - [cate_Name] => 水煮三国
; A. {& N6 n3 {; u - [cate_Intro] => 品位三国智慧$ [* D; A- f6 `9 c0 k7 W/ h
- [cate_Order] => 0
9 ^. ]: y: J) ]8 y3 R8 @ - [cate_Icon] => icons/3.gif# X3 c. T+ W& W7 _" C( }
- )
复制代码 三.把上一步的数据转为树型状的数组
8 i+ R! L- M+ ?: s" m代码如下:% g, f( ]% q, }7 M6 g
- function getTree($data, $pId)6 ]# p( ?4 S: u% E _6 C3 o- L) ]
- {; l+ J5 j) h# V! E9 ?/ Y6 x! H
- $tree = '';5 l* y: m. P/ o3 z* J
- foreach($data as $k => $v); C7 j5 G# O0 P2 t C) e" r; u T
- {
# y) y1 g1 E% j( U - if($v['cate_ParentId'] == $pId)
3 x. E1 ^( z$ o Y B! h, { - { //父亲找到儿子
5 x" i% C/ i/ P" r& e9 X - $v['cate_ParentId'] = getTree($data, $v['cate_Id']);: z. U# a. \& Z2 o2 ]+ g4 j: @# q& }
- $tree[] = $v;' w: L0 n# x- _, V- `
- //unset($data[$k]);2 g" j$ ]6 |0 `5 d' c9 g/ u# b% W
- }/ I& n" k9 J3 Y
- }
( p3 o/ L9 k" h+ Y# l* i6 n - return $tree;
4 a- K2 S9 n1 }/ s9 V - }
/ E# @4 S7 `4 s% z- ^. m - $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:0 X( ^4 `4 D9 k) G
- Array
9 L, p A3 s }/ e7 C" G4 N - (1 C- [% `& b& n9 H4 Z% e
- [0] => Array( X1 A- I. N/ K0 m
- (
" `; r+ h& C ?3 X( N - [cate_Id] => 4
% I7 d h% N: A1 l) U - [cate_ParentId] =>
. X( T, V* `0 S - [cate_Name] => 往事如风
7 K/ r9 R: Z9 e - [cate_Intro] => 记录往事1 w$ g* j/ n/ ?: a5 _9 {! ]
- [cate_Order] => 00 @8 H# F# C0 s# `6 X
- [cate_Icon] => icons/6.gif5 Q8 `$ k/ Z, C# n% a
- )5 D' i3 g3 A% _/ a7 ?
- [1] => Array
F; G5 |/ f, E% g. T6 v4 i - (% t' F9 B: e( S8 R5 F+ q5 v
- [cate_Id] => 5
0 |0 N" m) S& R; t& [* R - [cate_ParentId] =>
: ^& J) M1 g2 O - [cate_Name] => 水煮三国4 A+ l5 _& z: {: j; |
- [cate_Intro] => 品位三国智慧9 H, j# L V' y! o* ?+ m* I1 `+ B: @8 R
- [cate_Order] => 0
- y; F. G+ |( P/ T! W; W7 Q - [cate_Icon] => icons/3.gif
. H- N$ s Z6 ~9 M- x! m; ` - )- k0 R( m% |7 A: D
- [2] => Array
* z: w5 q3 k" c, ]# I. o; Q - (
- h% a# N) O/ t6 c, \. o: q - [cate_Id] => 2
& l9 [* c1 B* A9 l. M) E - [cate_ParentId] => Array
5 C* t% [) h: H$ P' @) u - (
6 N+ j- w* q5 _* B* i - [0] => Array, _ U: F0 R: g) {2 Z
- (8 l; ~. x- W% O
- [cate_Id] => 8
* }! i" c; \& H* e - [cate_ParentId] =>
8 w! I* s7 K0 ^' b - [cate_Name] => html
0 W8 U0 f/ N8 H; y$ ^# _ - [cate_Intro] => html学习
( ]2 f# S. S3 t& [, f - [cate_Order] => 0
; |, |+ B" Q) Y - [cate_Icon] => icons/1.gif1 o- V2 ^/ i. E; d0 b* B5 M
- )
复制代码 四.把树型状数组转为html$ Y0 t9 h5 J" X% h/ A: B J
代码如下:
+ \0 v* A1 _- J7 |; m- function procHtml($tree); F- s0 f% t" k( F4 v
- {
7 O+ v3 l5 [: W2 x - $html = '';6 P% e3 B$ ~6 N( T( [
- foreach($tree as $t)
! N4 a) k$ G$ u- a8 M; Y - {
" ]* }/ O! V: O - if($t['cate_ParentId'] == '')2 }, N! x. ^/ s8 |
- {
# u) A4 P% }! f3 @( v' v/ U) F: [ - $html .= "<li>{$t['cate_Name']}</li>";- y: t. p+ ~+ t1 |" u- c% z6 z: _
- }; [, c1 p. ^( t
- else
" ?0 p; a/ V6 I - {
4 ?7 W& g6 ? c9 V - $html .= "<li>".$t['cate_Name'];0 G+ i9 B3 B( r) f
- $html .= procHtml($t['cate_ParentId']);
6 c6 h' o" \- Z! N# L( q# ~ - $html = $html."</li>";# y! r6 M7 j% p4 C3 v- e$ [. b, y
- }4 ?" a# r$ k- V
- }
4 k0 ^" @- U; l+ Z( m - return $html ? '<ul>'.$html.'</ul>' : $html ;
/ d0 ~! I/ [8 W - }
: h$ Q/ z+ ~# Z. ] - echo procHtml($tree);
复制代码 输出的html的代码格式为:* A; G5 b* u2 v ^/ X: K" [
- <ul>
2 a9 k/ G4 p& x: b; C7 D# x& m$ N - <li>往事如风</li>' L) S0 P9 e& m3 M6 h* `
- <li>水煮三国</li>
" g6 A+ [" t( Q - <li>技术学习
) U5 ^2 O% @' _0 ]8 h7 p - <ul>! P- P/ w& o8 F; ~3 e4 @
- <li>html</li>5 L& F$ ?( a2 [
- <li>css</li>% c! L1 G( f' ?- `# F: G6 u( h1 I* K
- <li>php
2 d& X6 g! W+ T" P2 U, {1 p - <ul>: R k$ E" d' R* S9 O2 ^
- <li>php基础知识</li>
# l: K I6 f6 q7 M! s - <li>oop</li>
7 J& z2 R. W1 T% N. W* E - <li>php安全</li>
复制代码 五.代码整合
, r+ G: P- S8 k+ u0 c- function getTree($data, $pId)
# l' \$ \8 p" Y# f5 Z Z* f - {
: L g' `1 b$ @- _. @, L# B; n - $html = '';
9 Y4 ] d/ v: ~- v - foreach($data as $k => $v)2 U Z0 c* d0 ]/ Y6 l9 Z( k [7 `
- {$ d' ^1 R! k! o2 L; w5 z
- if($v['cate_ParentId'] == $pId)0 ^& l2 j2 ~& ^0 ?: |
- { //父亲找到儿子
* z! ]& k( v5 D+ y - $html .= "<li>".$v['cate_Name'];( u2 h0 W2 I# F U: M
- $html .= getTree($data, $v['cate_Id']);3 U2 c Z; v! ?$ n7 N
- $html = $html."</li>";
5 j. f) F4 g6 a8 {+ [, o1 e" w - }" j$ F& x: k4 D: e
- }
2 W' s2 N) }: s: d: [9 |& g/ H - return $html ? '<ul>'.$html.'</ul>' : $html ;
& S2 v# W) d6 c - }
" P& U" i7 k, R* ^( J1 H/ @ - echo getTree($data, 0);
复制代码 六.增加CSS样式0 O4 p/ c) @: p, [1 `
; a. _; R* h: i1 q5 s, G
( `; t! l, Q6 f& h第二种是从开源网站上看到的,非常非常的简介。* O4 `1 |5 @. \! ]
- <?php
: R8 o4 e f9 a, k7 X -
5 q* ~9 U2 \+ u% \) @2 f+ U# t - function genTree5($items) {
' B4 \* V1 z% s: D M4 ~ - foreach ($items as $item)
- }+ ?7 o. n' L+ p9 J - $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']]; # c' @ f1 q- k5 C2 T# a: ^8 H
- return isset($items[0]['son']) ? $items[0]['son'] : array(); - g/ n: ~. s5 c7 {7 H/ X( e9 q
- }
* g2 G+ P0 z& m. z -
. \, z$ E c' `+ H" R+ d+ E - /**
# e @: Z: q5 a! b7 l- W% S - * 将数据格式化成树形结构
+ Z7 ~1 I6 z; O6 |' F& z. T - * @author Xuefen.Tong
* c2 z* R) L+ u. f# k - * @param array $items7 k9 ?+ \- _. \8 n5 j9 t% }7 m
- * @return array
& Q+ m9 `' S0 t3 X& K" x - */' W3 g$ ~& x- v' q1 V0 H# F6 _
- function genTree9($items) {( n/ [# t5 Z2 a, b7 d# G/ _" J
- $tree = array(); //格式化好的树
4 {8 H$ m. f/ d2 x7 Z& O. }/ s - foreach ($items as $item), S* n& t" [, F6 H+ k
- if (isset($items[$item['pid']]))
, F. z9 P' }: g. h- ]9 w+ ? - $items[$item['pid']]['son'][] = &$items[$item['id']];
. \6 j# f" G4 M - else/ ^3 n0 c! X8 I2 W ]
- $tree[] = &$items[$item['id']];
6 F. v0 b* a6 Z8 j4 c& _" l0 i, l - return $tree;
9 c$ c& v1 Z" Y/ H5 c+ r, P - }4 r" v P* R6 O
-
- k* N" \% U4 w: s& n, q - $items = array(9 c# q- v' V0 j+ z: C% J
- 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),
2 I) _; w, G- A- H+ V4 J - 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),. v- r- Z, K8 \" v; ]
- 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),
' U R3 Q. v( O* j - 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'),
, ]( C! v5 h2 U - 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市'),
8 r$ \6 U O; ]: l v - 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'),' A' h- ]( {( Y/ A
- 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'),
M7 ]5 J+ _6 P: `$ Y! P - 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'),3 m( J( n3 ^" }
- 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),! f. T' g0 F. R: g6 u$ A1 J
- 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),/ }- Y$ }( L3 R* R% H
- 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),
; n2 z, t6 s4 H' t: a6 k - 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学'),; Y3 J, g) F; m
- 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市'),4 q$ |2 f& G* D
- 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'),
2 q( l8 s# o# w9 k6 O( Z - 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县'),
6 f; ^+ j( ?+ @2 j - 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),* c$ h( Z2 K2 H& V% y* @" |+ f: `
- 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),3 G1 T' y* q( k h+ E. L
- 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村'),
+ x) J+ L8 e0 r7 c - 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村'),& g$ P$ F; A8 K
- );
8 Q2 S }, n3 n. t$ j - echo "<pre>";7 G }) \; n1 t; W
- print_r(genTree5($items));+ b i4 _2 N( L& s1 y& C
- print_r(genTree9($items));
7 H2 e8 V2 h0 ~! U/ j2 r1 N9 ^ -
3 c9 P' i- e& X" o! _) d - //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$ Q7 Y/ R9 q( m' g
- /*
* P5 [- s* |$ P* ?2 n k0 s2 I _ - Array
, \6 \% @ }: i5 i/ x0 C - (. N2 `" }3 o7 C8 y7 V2 H
- [0] => Array
8 I0 c0 a) E7 d4 T1 Q - (
. G0 Z' i' L: s. d7 z$ c$ A5 w2 O7 l; E - [id] => 1& F6 T' X7 Q2 _9 {* Y5 a
- [pid] => 0+ I' _; K) K( z. g: Z
- [name] => 江西省7 u; [, P( V1 l/ \
- [son] => Array
4 H+ H }1 A8 s& \3 k9 ]" Z - (
$ ?4 J6 Q! y0 I; \. Z% q - [0] => Array# I. g0 q% j5 [
- (
! o. T1 ~6 m: M' u3 n5 h- k - [id] => 32 B! W$ G( D* `( N+ d- V
- [pid] => 1
& N9 S0 B' K# e0 z. V - [name] => 南昌市$ V1 z( O" E& Z9 m& l! b7 A, n
- )2 m1 ?7 o1 [ s, i: @3 W
- : ?: J/ c& T& `2 R& `9 h
- [1] => Array
/ _" b1 W' U; ~+ D - (
9 C s. d! U1 d# m# m; K( } - [id] => 13! Q0 W! h. ?! c: F) t* ]! ?
- [pid] => 1. |! @: s3 p& u% l
- [name] => 赣州市
: p5 K5 ^5 l9 V - [son] => Array
2 \2 q# K# {3 A - (
, N0 X+ J' S7 h' P. i - [0] => Array
2 s& P. r2 O4 W' t - (: C9 M2 i7 u: V& K0 t
- [id] => 14
0 w) a" h' I" j( q - [pid] => 13
7 Y" \2 ^' U. S3 W4 }$ M4 q - [name] => 赣县. Y ?* X- \ G! J' R" L( q
- [son] => Array. o' z7 r$ ^8 l* r1 V( |( J% C
- (
/ N: V6 C6 @ Q - [0] => Array5 s1 W }7 j0 y, S: e) ?# B' b
- (2 T" ` Q6 A2 w# X! V* ]
- [id] => 16
4 g: m$ b4 K R$ m; R P8 W - [pid] => 14
) C/ I1 G- f* o - [name] => 茅店镇
$ d, W6 ?' T7 }, D! }% y - [son] => Array
; k4 x. h8 O" @+ b+ g0 r3 E - (
$ F: z# N7 _# M: f& u - [0] => Array
% Q3 c% C1 b, Z% x) ^' m - (' c' E, A! E2 f& H' c7 r. u
- [id] => 18( Y8 B; t" Y! ]7 q/ S, A9 R
- [pid] => 166 s2 F( w- z7 v* @/ n/ [" B1 H
- [name] => 义源村' F6 {$ K% d; y% V% T2 P
- )9 V; v, q0 C( \
- + G. i' p z* ]5 \
- [1] => Array' H- E5 F3 c3 C& i5 w p; r
- (
' W8 H! W) J! L) h$ Q. a6 ?- j - [id] => 19( H+ O, r! \+ W& R0 m8 g/ N
- [pid] => 16* w7 @3 g7 V3 ^3 X" X
- [name] => 上坝村
2 O$ [$ ?) L2 x. } - )- ~3 P# b) w& U% k3 ~
- - Y5 ], b( G( U6 w
- )+ H- u0 f2 Y0 k/ W$ L+ g
-
8 G: C6 d* g Q* x, O* ]) O - )% K7 m# H' f0 g
- % V' E7 h! m! I& X
- [1] => Array% Q- e6 G6 K! I
- (
4 ~ D3 k; v3 }0 a - [id] => 17( N2 D" a4 G; T, F
- [pid] => 14
, [+ Q6 z" G! N5 H' [ - [name] => 大田乡4 k9 D+ n; H. c# J/ j8 U) N* p+ s
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-
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- (
( P& \* G( i: G0 g" ?! M - [id] => 15
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- [name] => 于都县" `6 _% i, c# Z1 {
- )
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5 U1 J& N9 ?: U5 b1 t& | - [1] => Array/ I u3 |1 R4 a- d
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- [id] => 2
1 _3 x9 W% B! }0 T3 v q - [pid] => 0+ U9 F6 g# c8 Z/ n7 I
- [name] => 黑龙江省& A6 t( T, ]; z [% b: F! j: V
- [son] => Array
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- [0] => Array8 v$ F8 g- G; ]; F6 z6 q
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- E6 }! N/ {( q& ]( V+ I' Y - [id] => 4
, @9 R% g/ f e. H - [pid] => 2
& }; F9 k5 t. i3 R7 P - [name] => 哈尔滨市
9 l5 u& X) R* N - [son] => Array; b9 H' l. | o
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1 Y- ^: {# o0 P0 w6 M4 S - [id] => 6
3 {6 H. o# m: f4 i- |+ e3 w6 Z3 k - [pid] => 4
& N' C0 X5 W/ _% P - [name] => 香坊区
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+ O4 y+ G+ u* _: @3 _ ~ - [id] => 8" ]% @0 U' r9 Z3 s. `7 x
- [pid] => 6$ z+ x. l/ b, q4 J. x- ~
- [name] => 和兴路, s/ n, d0 W" t- |, c Y: r
- [son] => Array
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4 I7 J5 v" V- r+ p1 e7 i; e: n4 j - [0] => Array* V) U5 M* T% H8 z1 d- _6 m
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- k# k9 u4 L7 Z+ q8 j# k: o - [id] => 10% w; C0 X$ I5 D/ g: e. |+ k/ Z) H8 B6 X
- [pid] => 81 ~+ h( `' q( i" d( k
- [name] => 9 p! v, L: u9 J( `
- 东北林业大学
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8 P; q' H$ W3 I% @" V/ o% J - [id] => 121 u) E* i9 n! o4 e
- [pid] => 8
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% _6 j) A5 Y' e4 {' ]* Y4 C* U - 哈尔滨师范大学. l H% r5 A$ o( w
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, B p' l% g( r - [id] => 7
, q, G" U g% g! P+ T - [pid] => 4
( E4 L2 _8 N, A& _: p8 U: } - [name] => 南岗区9 i) c" S2 c k$ U: Q0 a
- [son] => Array% q+ y' g S$ e4 Y
- (7 |$ }( u% X: M' k+ H
- [0] => Array
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- [id] => 9
! ]; C% ~' b3 @5 E/ C - [pid] => 7( d: _2 j. Z" [5 n; h
- [name] => 西大直街
# t! ~) E2 l+ B0 @- E - [son] => Array* R/ I# I" D4 G$ Q3 q
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- (8 O/ s, r, H7 O7 S2 D8 o% m
- [id] => 11
& ?, p. K) S$ M8 A+ ^% W5 I - [pid] => 9
% r! k5 e% X5 d5 q' R3 ~: n - [name] => ' p2 D- \# l6 k+ f" U, r K
- 哈尔滨工业大学
+ m1 s. L: r6 e- Q. A4 e- Z - ); \9 D2 g0 c2 R4 M# Q/ h
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-
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- [1] => Array
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, R+ y8 R% W. Y' c! Y - [id] => 5# ~3 |# q8 A# o( H; G( c
- [pid] => 23 m, k/ D S8 H1 B5 c) R
- [name] => 鸡西市
7 {, \" u, I _9 u/ J - ) S$ x% V3 w: k* Q' n$ Z
-
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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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