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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 F" X: N9 s7 U0 t
一.数据库设计
: T0 R' ^8 |- f V2 g- CREATE TABLE `bg_cate` (
: u! I: }" Z' m/ p5 R( [' r - `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,0 h% o* j2 l3 h' C, l* Y" O
- `cate_ParentId` int(30) unsigned DEFAULT '0',
% p/ ]; j, z9 k; \ - `cate_Name` varchar(100) NOT NULL,7 ?+ N0 r* S2 l: q1 t
- `cate_Intro` varchar(500) DEFAULT NULL,
1 A- y5 F0 F4 f" |( C - `cate_Order` int(30) unsigned DEFAULT '0',1 {: }/ u2 U& H( \4 R' i3 l6 P
- `cate_Icon` varchar(100) DEFAULT NULL,
" D8 @) U! ~; P4 m - PRIMARY KEY (`cate_Id`): |# W% d, y/ | |" [( }" ~
- ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;
3 | G6 L/ B8 Q0 a& ~ - --
" ~! L. X+ t% E2 L9 ~% p - -- 导出表中的数据 `bg_cate`# X I; F) ]6 {
- --
! Z- a; Q* R1 q# P r) L& }9 |2 o - INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES' X( t6 s9 O+ \9 L* s
- (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'),/ o ^ U# ^; p; ~: h
- (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif'),- @! f. i' N* n" A
- (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'),
7 I; O) r# [. |7 w; s& t - (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'),) F4 L c! g# n' S5 w* t$ d
- (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),
0 p1 d, ?$ H: z% J( e - (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),
% M8 g$ a K5 a5 }) o' G N f - (8, 2, 'html', 'html学习', 0, 'icons/1.gif'),% C8 |: e U( \2 Y% G6 H2 C
- (9, 2, 'css', 'css学习', 0, 'icons/1.gif'),
0 }$ W* {) B' H: b' [ - (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),% R6 `0 [4 @. p1 q/ C: S' f
- (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),* C$ |3 b, |, l" O& b. T9 Q9 S
- (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),
' \5 o+ A9 z: A( n+ o' f - (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),6 R" E4 w9 J# h; f2 {+ ^3 Y
- (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif'),5 k' M; a9 W1 ]. Z( ]0 U# m
- (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'),
- l7 ?$ T1 W4 B9 G - (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),
. ]6 S: F8 C4 h( ^4 E - (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),
& X; Y; u. z N4 u- a - (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif'),5 O1 T1 [- m V3 A( f- H
- (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'),1 t, M1 G$ m B: D# n
- (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif'),
+ Z( A5 x2 i! ?: L2 A& q# H) Z0 i \ - (21, 19, '学习', '学习', 0, 'icons/1.gif'),
4 y; ?$ w+ q, P0 R* V6 T! W - (22, 19, '运动', '运动', 0, 'icons/16.gif'),5 e; e: X. o8 ?0 D z( t
- (23, 19, '旅游', '旅游', 0, 'icons/24.gif'),) L3 s+ s, u5 H8 o: r# l$ W
- (24, 22, '排球', '排球', 0, 'icons/9.gif'),
J/ D: {$ ?; E. g% R - (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),
( ]# b" F& ?6 A8 Z, u - (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),
$ I3 x: u( F1 T% q% I8 w - (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。" J3 w+ S: ^! o; f
- require_once './classes/MyDB.php';3 q- m# K6 ?" ]' |' {: r$ ?/ y% K
- $con = MyDB::singleton();/ C6 m7 y; N+ S; D8 M" _
- $sql = <<<SQL; R k2 e! s( O% E
- select * from bg_cate cate
% o6 B: X! l. f - SQL;
7 [- s& y% F1 l! o L+ P - $data = $con->getAll($sql);6 D& n5 a1 o8 x7 ?+ y8 S
- //print_r($data);
复制代码 数据库操作我用的是pear类库。
( s2 s: E4 m4 I: k5 s最后的$data的数据格式如下:( d" i: m/ D/ ?6 ^9 n
- Array/ n8 _6 q% S8 ^' g' e7 v) ?& X3 Z& v
- (# N' p8 v1 D) X, L) J. y7 E0 G
- [0] => Array! ^' R2 O; F: g- n
- (
) T+ t. n# g) O& V3 w' x - [cate_Id] => 4! \ h3 N' q: y* B9 l1 P: \8 `, p
- [cate_ParentId] => 0
4 c5 r ~/ y2 I! l1 }+ d) R/ J, D1 V - [cate_Name] => 往事如风5 G7 J8 U/ u6 z v. j
- [cate_Intro] => 记录往事1 ~4 U& o+ `" w2 Q6 Y
- [cate_Order] => 0
7 j$ ?0 i& ~, N - [cate_Icon] => icons/6.gif
; P2 Y/ j6 S r! g# X - )
+ X3 B8 F- { W+ m$ a - [1] => Array
: N! G( q% K& M. n) J6 f - (
/ ?% G& Q, {1 d! z - [cate_Id] => 5
1 j: w6 o+ \. E( W$ H" k2 c - [cate_ParentId] => 0- F. X) K! M8 S* P* ~4 p
- [cate_Name] => 水煮三国1 ~6 c* r. V; R* i" R
- [cate_Intro] => 品位三国智慧
- y, a C3 b5 m! d1 h) I - [cate_Order] => 0
2 q( A' i% [2 N& y - [cate_Icon] => icons/3.gif
+ g+ x4 W' Y' X - )
复制代码 三.把上一步的数据转为树型状的数组
! ^4 N# `! J: o+ `& ~" E- l# r代码如下:
- ]8 D" F8 Q; j$ ]( [- function getTree($data, $pId)
6 i& S: j& D/ _! h - {" w. e5 w$ A, x' i5 @ ]- i
- $tree = '';/ ?6 G# J0 q0 ~6 D
- foreach($data as $k => $v)( w7 T" Y% k, R4 X
- {( ]- Y% X" N; M! h% l
- if($v['cate_ParentId'] == $pId)
0 `6 S+ ]! ^! c, E: d+ u% x - { //父亲找到儿子$ B$ a0 ?1 q5 S- B
- $v['cate_ParentId'] = getTree($data, $v['cate_Id']);
9 Z) W3 v+ p4 _# P - $tree[] = $v;
5 z* w8 g% }/ V2 { - //unset($data[$k]);, ]$ W" U. F7 w* I
- }8 W* j, W/ {, t2 L
- }7 c" J" G: j, M' ?& k- q Y+ M! H9 a3 t
- return $tree;
; q" F. z: c% D8 V+ D - }' V7 r3 w* [. D- B
- $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:
! }) Z5 H, |# u) {7 q- Array
, A0 p$ f; f+ t; _( m - (: f* w" x' C/ T/ s3 B2 V6 v }. c
- [0] => Array6 `: W' l, d4 ]! _2 Y
- (1 d3 U* h0 k; K# z2 O' k5 O
- [cate_Id] => 41 | r O. `, E
- [cate_ParentId] =>6 \0 } }1 e3 L7 L
- [cate_Name] => 往事如风
8 `" O1 H3 s/ w5 I: t1 j' c6 D - [cate_Intro] => 记录往事
# @% R7 z3 b6 p4 p - [cate_Order] => 0
8 V) @! d( m, M5 U: h. w5 O - [cate_Icon] => icons/6.gif
9 h" P8 ]* j2 |6 I% ~. D - )
: S$ f' ^2 Q; u0 ^4 | - [1] => Array% w* L2 h: b8 ]6 c7 V& s" Q7 w
- (
* E# g5 H3 l# l2 P( a - [cate_Id] => 5
$ |1 i: R1 u$ b: ? - [cate_ParentId] =>; L( f! g) a% W
- [cate_Name] => 水煮三国9 S; t! }$ w$ @0 w5 f$ o5 e# D
- [cate_Intro] => 品位三国智慧
; O0 j% T2 V( M) d - [cate_Order] => 0+ Y0 D; x# v7 s7 }* G) I% m, v
- [cate_Icon] => icons/3.gif
4 n# m- M. m! n' M# U" [( Q - ), @$ |% K) X0 B# |
- [2] => Array
, ]5 o6 u( p b6 o- @ - (
$ j) j/ Z8 c, K n0 z; Q - [cate_Id] => 2
& ?; ], N, K) p% P" m/ P - [cate_ParentId] => Array
( a8 _+ v/ |! I B, Z0 i7 r8 S - (
+ w# R+ j0 J5 [* E - [0] => Array
3 U* o- S. I# W* _ - (7 M1 d8 I$ ~4 A1 f, Q8 R" Q, E0 V
- [cate_Id] => 85 p: b0 J4 q8 L
- [cate_ParentId] =>
0 s7 M2 ^0 s F0 r - [cate_Name] => html6 j( J$ v3 B. k8 ]4 {: F- w9 u7 P
- [cate_Intro] => html学习/ k" [% f8 k! g1 F0 b
- [cate_Order] => 0 \% C0 h9 Z6 O4 X6 I" K/ f# P
- [cate_Icon] => icons/1.gif$ c" m2 O! h$ |+ y) ~$ q8 T7 |: q
- )
复制代码 四.把树型状数组转为html7 i# k# K3 Q" [7 u
代码如下:, h5 X3 A" }1 _ R
- function procHtml($tree)
8 r7 {) T! M: C - {
7 O' G6 f8 ?- b1 j% Q - $html = '';) G* ]) P- j# O C; X! p% r
- foreach($tree as $t)6 p1 v: S1 M' k) p! }
- {) D' w" I9 B7 ]( @4 U
- if($t['cate_ParentId'] == '')/ U5 [2 u7 u) G2 q' L* z/ x
- {
" b8 e ~) b4 ]( R6 q3 L5 D; h - $html .= "<li>{$t['cate_Name']}</li>";
0 m9 [+ U5 ?5 f - }
' g- @& @; h/ o# y& t! I( M7 u - else' q( \9 Z# q, H, M2 K# _! [5 L
- {
7 c. g8 c% C. w# m8 y2 D" U) g - $html .= "<li>".$t['cate_Name'];8 x& B# u& Q. h; i7 d6 l/ A9 ?
- $html .= procHtml($t['cate_ParentId']);4 S9 w, X: A- R! j% ]$ d
- $html = $html."</li>";3 b, e2 N# B" E; s
- }1 p5 T# B7 z' ?! }8 h7 s
- }% h2 ?7 f3 r9 j, D8 o
- return $html ? '<ul>'.$html.'</ul>' : $html ;6 J/ @/ k% t. A+ Z }! b" {7 K
- }& W5 _5 q1 D* d0 {+ j
- echo procHtml($tree);
复制代码 输出的html的代码格式为:0 d I9 y; {4 `- F4 S6 U$ F
- <ul>
: ]) Z7 x4 a* z6 U: ?+ | - <li>往事如风</li>/ r9 [4 S0 f9 g1 T8 B8 z; V( A
- <li>水煮三国</li>" J2 N- Y- e9 l; y3 Y# A( |; m
- <li>技术学习
f. F/ R- I/ N2 x; W6 p - <ul>6 j: J& S0 x% n9 o3 u
- <li>html</li>& \. t1 v6 s+ U
- <li>css</li>. Z$ Y* O- W5 g# Y- [9 b, r! }1 `
- <li>php
, h$ X( ], H2 g - <ul>
8 z! ~, f% d2 t: o2 e0 |# @! K4 V; B9 j - <li>php基础知识</li>( z X9 ?& [, V; n) e
- <li>oop</li>3 `2 L4 J6 y0 \$ y! `+ M
- <li>php安全</li>
复制代码 五.代码整合
" N. [: L2 {( q0 t- function getTree($data, $pId)) F& o( |2 ?( o! S$ h
- {
% e: z3 A' ^: x2 W - $html = '';
; `, h4 v( R; X; W+ ^ - foreach($data as $k => $v)4 M: ] }) Y/ j# b5 y4 @
- {7 Y/ r F1 O( [2 D& e: \% k
- if($v['cate_ParentId'] == $pId)- N+ e5 Y( \$ U7 q/ w+ w7 c
- { //父亲找到儿子
8 j! @- g8 g, E5 p! {$ r - $html .= "<li>".$v['cate_Name'];
O( B7 H. X$ L2 x9 e - $html .= getTree($data, $v['cate_Id']);
- V) `( {4 e: H - $html = $html."</li>";
) f+ |' L2 V* S& l7 w2 L4 Z; N - }4 g4 w# B4 @: A" k4 V: E
- }
$ b8 E3 T$ |2 O4 k - return $html ? '<ul>'.$html.'</ul>' : $html ;% P& ]6 ~( a1 j! ~3 ~6 Y& A
- }, W# g+ J+ ~- c& \' b3 Q+ E: l
- echo getTree($data, 0);
复制代码 六.增加CSS样式% F8 m. ^' U _1 b
$ k- G. ^; z2 c% T* |+ R8 t5 z# b/ ]3 S x
第二种是从开源网站上看到的,非常非常的简介。
$ G# T0 w$ x( e: F" y# K- <?php& S( c4 p' {2 D" M t' D" a$ W
-
, M3 s2 ^% B U/ e, y" j - function genTree5($items) { 3 o: [0 w Q8 w* F) s
- foreach ($items as $item)
7 z8 p2 r( d/ {) h- _ - $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']]; ' S; I' n9 P4 Q: P y) W5 G- X
- return isset($items[0]['son']) ? $items[0]['son'] : array(); + w7 {/ M0 p+ A: D
- } 0 T# E0 v# _; f h0 `
- ( _# z& [8 V" [' i
- /**
: n$ I3 w, W- s9 t2 H& S' K - * 将数据格式化成树形结构 D$ L1 o3 B) I+ `0 R
- * @author Xuefen.Tong
3 V* Q) b( B+ `2 T7 M9 l - * @param array $items1 p7 `7 K8 [# Q
- * @return array 4 W2 }! T. t# e/ Y' I
- */! W" k2 Y% l! |' N
- function genTree9($items) {/ j8 V/ t) Z+ ]- ~: s: n
- $tree = array(); //格式化好的树# ]& ^% I6 F$ O, f/ l! T
- foreach ($items as $item)' h p7 }# @; B
- if (isset($items[$item['pid']]))
. ^0 W# q* z( ^, I4 s' p5 B - $items[$item['pid']]['son'][] = &$items[$item['id']];# i$ E2 C5 a( m: u, _5 S
- else' Z2 V2 }. H: @' n4 p3 p, Y
- $tree[] = &$items[$item['id']];
# u2 ]/ V/ G% y9 H( K8 ~! d) ^ - return $tree;
" ]$ ^4 E( [+ ?* N3 v9 f$ d - }
. B: }% O8 e" ]% Y' J* ~ - . X" B1 g, i4 g' Y' `
- $items = array(
% y9 E3 X+ N. p' a& K - 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),9 }. \% q; U; k \2 Y+ S
- 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),
2 a( ^- c! H! H0 t3 g - 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),
% v$ u6 I: _- a- q/ V - 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'), h+ J5 h2 Q1 j/ ~9 H7 p7 F
- 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市'),
# P8 j# \7 d( J, c) J4 e* C; y, }1 V - 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'),' I# Y( e. [: l8 i1 i
- 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'), l- L0 W7 _6 r% b1 Q
- 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'),
8 w8 i9 j8 i/ r# x5 q - 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),6 \# B% r) p a7 l) u8 n
- 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),) S3 c1 N0 a( c# r
- 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),
3 n2 G6 I5 g3 Q% c4 Q/ ]$ A2 u - 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学'),# _3 M" p! g/ |4 L, u, ]
- 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市'),
! d* P- {) i. R {$ z! Q - 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'),1 W% r" Y( f- o. t6 y( c3 m5 Y5 {' {
- 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县'),
+ A" j b6 g6 N' P$ `( ~ - 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),
2 m% _- h* S: r4 W6 e+ G! w4 I" f - 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),9 v$ p7 e2 X( n5 t% I
- 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村'),
3 l3 I. A z4 M1 ^/ U- u. i - 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村'),
: l; h* |0 ~2 J0 H& W% K+ B+ h - );- i! g/ \& P% g7 O. [
- echo "<pre>";
* g: @' i! W8 v) g - print_r(genTree5($items));: T. t n- a. c: q5 x5 H4 h* d
- print_r(genTree9($items));4 T% w c6 f. P: x5 s1 t
- 4 e! j) k( O( b" o F- j
- //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
" H. K' _6 E" q3 n! K$ d - /*+ c9 |8 t& ~) f# Z! P; S
- Array& T- C3 u. ^7 G; v. }1 _9 R
- (( W2 U F. x+ p
- [0] => Array
, A! R% U9 N2 u- | - (
- S/ n9 M1 W! i* B+ @2 ? - [id] => 15 N9 q( b7 b( l2 x5 T& C" e
- [pid] => 0
/ J) C [4 d# J5 ]1 e' K. i$ J - [name] => 江西省: j# ~$ B! G# A2 o, P: ^/ O4 ^
- [son] => Array
0 W1 t1 E4 ~* C o$ x [% M; T - () S# L$ D9 i( c6 f
- [0] => Array
, v: }; D6 _6 Y* _, V8 s6 G - (
/ B7 @& c2 n2 S: i: E9 O1 k - [id] => 3
6 y1 g. F( t) F8 L - [pid] => 1
2 G) F) ^0 Y0 T0 q. |5 J Q - [name] => 南昌市
, U! T, e% T0 J - )- d3 X4 O5 q+ q0 p
- 6 k) P( R9 @1 ~) } V; |) T
- [1] => Array1 g) j% m- H- Q7 K; I
- (
8 U9 h2 D9 R) F+ u; l! i - [id] => 130 y3 X T G1 g$ c- n
- [pid] => 1
v4 A5 f+ ^1 W+ y1 x$ R - [name] => 赣州市. d* C$ R1 r; P& C: G
- [son] => Array% z5 n5 C% }3 l* I2 l
- (9 }5 N6 v) H, W" v- Q4 Z" A
- [0] => Array5 C# ^: b( C5 j5 d5 j
- (
1 R% W# }% c7 N5 Y - [id] => 142 e, n$ k4 c( ]3 M
- [pid] => 13+ @ v+ H/ k4 W/ v6 G+ H
- [name] => 赣县 l& S/ `+ z/ n
- [son] => Array
$ ]" `9 U" _/ c% e- ~; e; L - (
5 g8 _4 M7 Y/ }" V( I - [0] => Array* R3 ?, L4 a* s# z1 w8 S
- (2 V1 `+ i/ k/ L- q0 m& ]5 |# @, {
- [id] => 16
5 H) x& D& k! b+ W# t$ g$ m1 j - [pid] => 14
2 c) c( V! i ^- Z - [name] => 茅店镇- B9 m0 Q6 e! W" j) B
- [son] => Array
6 Z- d2 j+ ?; S: A! I4 E( h - (* f% i: I" i2 Y8 L$ ]0 G3 {
- [0] => Array; L, T9 ~4 y# {$ u1 [
- (
# V( C' \2 m4 @* N, t4 X) y; c! ^- }: ] - [id] => 18
5 X. w: G4 T& h) u/ @' d - [pid] => 16
4 n1 P% B' t( s( v+ @, _ - [name] => 义源村
1 l9 M( e9 Y" p/ z @2 q - )
) G o7 ?1 c7 i! S -
# ~* _2 V' l- T }! } - [1] => Array
6 b: \. c( n) a/ R - (
3 d& g# b5 {6 Z O' W5 u* } - [id] => 19- v5 t/ B1 [0 I6 `4 U2 R
- [pid] => 16
0 u. i/ b0 q$ }( P Q - [name] => 上坝村
8 B6 x2 M9 M3 F$ |% ^7 w - ): U" Q2 Y$ t( E |
- ; b3 G! S: b- x# E- A; b& ]6 G1 i
- )/ q8 I5 t; T+ F& W9 W0 V
-
. ~( j. b4 ~: f+ M" V. {5 K - )
) V3 e& S; h4 @* }- [3 @5 e8 T -
6 ]7 K7 z5 E9 h - [1] => Array
3 l3 W$ H7 A7 ~5 q3 q. M - (1 R1 G+ M( e9 D$ q4 x# Y N5 t
- [id] => 17
! y, y* \, n( a8 u - [pid] => 14 Z, Z1 e# s0 j3 i! C" ?
- [name] => 大田乡
' _0 ]& M9 J; ]! p8 z - )
9 `2 M0 t' ~9 [& z -
# p* t3 c0 T/ v' ` _' J7 ` - )
# S# n9 ^. j2 i/ I( K -
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7 ]% A6 G0 J Q4 U* O2 V, m - [1] => Array
4 b _2 D+ C$ v- |8 g7 e - (
5 P+ ]( v, M" Y3 A" S6 C - [id] => 15& e& b9 g5 h; E7 V+ H8 w
- [pid] => 132 x. k9 W, S2 b) C$ ~+ q: X- K4 r
- [name] => 于都县( S W& i7 k+ M1 h
- )
7 U+ G' ^) Y+ R$ ~8 f6 z, c3 F Z. w - 7 b7 B v8 T8 Q; _
- )+ b6 U9 X3 S3 w0 _( Q
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-
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- [1] => Array
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- [id] => 2, A; w! N: ~" v' `+ r% K
- [pid] => 0+ d9 B9 E/ T& h; [8 J
- [name] => 黑龙江省5 k$ X) ?8 R# x: q) @
- [son] => Array
( h9 e1 q. ~. \2 l. I7 W3 z, D - (' a. t5 X' x+ A* F
- [0] => Array) {7 ?3 b* g7 N2 f7 M
- (' k1 l y+ {6 N4 l
- [id] => 4
) A& [! w, [. F7 t" ~) P. I - [pid] => 2* ]3 z) C6 r% M2 {5 \. h- G- j/ |( T
- [name] => 哈尔滨市
; I' f: F# s& `* n - [son] => Array$ v$ A+ p2 F2 F! Q8 J( B+ ~( ^
- () q' V. j" v1 v. w$ [/ `/ m
- [0] => Array
- x8 m8 W2 G/ ~ - (% l8 [6 T; K0 b* k+ `1 x
- [id] => 63 M& _9 o$ Z1 k
- [pid] => 4
, Q2 J- B" g. ^# B6 i - [name] => 香坊区7 u/ C1 B# ^" F' }: [* ^1 g: Q
- [son] => Array
) L$ u+ |0 Q6 y m4 t; t! ] - (
6 u( O* P7 x8 E4 f - [0] => Array3 }) |$ E+ C7 i
- (
4 Q1 Y, K. x/ ^, A - [id] => 8: K1 _& J% H9 }5 C" c6 [
- [pid] => 6
( v! ^! w- r3 U; Z. {0 | - [name] => 和兴路
. Z6 S4 n' d& b+ T" a/ `" z& m* H - [son] => Array
7 b5 y+ w1 k3 B. {/ q - (
( S& K$ F2 P6 s - [0] => Array
6 i. G0 L. h0 X8 Y& y - (+ _1 F) w6 {1 J! G
- [id] => 10
; ]2 V1 {( s W: t- G: Y0 h - [pid] => 8+ |+ n, L# I3 p0 N
- [name] => 4 M% j& x: d3 w w
- 东北林业大学9 ]( ]/ c9 b! L& B7 ^2 L
- )
& L& w! U( L$ t0 C- p8 Q -
' o$ {# p/ Z5 V% J M - [1] => Array
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- [id] => 12
: S; i7 X7 \ c* [% b6 w' p - [pid] => 8
" D/ ]# x: g2 V/ e- A: W) z - [name] => , E! _. \" `5 U! W4 U
- 哈尔滨师范大学
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0 @! c- E9 n. |6 p8 {6 C# D5 w8 t -
5 x+ m; }# B. [' p0 X0 v - )/ z# ]& V6 i6 ^5 I
-
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-
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- [1] => Array' ~0 V) F1 g( \" C
- (
8 }- k% Z6 f7 `2 J - [id] => 7
6 Z. B7 h" A: w! n7 `5 r - [pid] => 4/ g+ w$ `+ S, l# r# ^; |+ x
- [name] => 南岗区
4 U2 f. a! M) ^) a - [son] => Array _) y; D; i+ m' W
- (
! `8 ]! p! e" J3 B; K8 d - [0] => Array( u, x, M( a- B, S6 v
- (
0 |& E$ D6 \( s8 o1 J - [id] => 9
" x- H, m6 ?8 C s6 X) ` - [pid] => 7
2 v, Z# y9 a7 w& V. q3 [ - [name] => 西大直街
7 t5 a/ z. w/ `# I1 ^9 g - [son] => Array1 w$ W6 f3 z6 q
- (
" g# ?4 E% U% u. q - [0] => Array& e! p9 E% r1 {" s
- (7 |6 D9 E2 {. B
- [id] => 110 J: ^- J6 Q* t) `! T4 _& j3 p/ k. B
- [pid] => 9+ E+ e: r4 J! \7 h% y. j- k/ f8 u- w" n
- [name] =>
- }" b0 j: S+ j8 m' U' S; D - 哈尔滨工业大学& n# R z: w- j! u
- )0 E5 W' E% m' V
- 5 c, [; n- Y3 ^+ S# ?
- )
8 N( J2 }4 J0 o$ a" z -
# m" N0 T+ G$ P% z0 g# j( ^ - ): F* Q( r+ }, i! A0 T
-
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- )
5 M8 ^% v, m, M V" ?9 b" E - 6 x4 b4 z4 c: I$ U& ^' O
- )
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- [1] => Array4 a/ {3 ~+ Z6 i1 a2 o0 s( V
- (
% _5 @3 q) K* O$ {+ b - [id] => 5 q, w$ |1 b( m$ h/ ?6 X
- [pid] => 2
D5 H4 Y) U6 k) ~ - [name] => 鸡西市2 L2 i2 n& M0 f
- )
5 d, h' A0 u' J5 l3 m; z -
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-
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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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