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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。+ k& }5 ~6 O) o/ O% s
一.数据库设计
: n9 n, b# c$ c- CREATE TABLE `bg_cate` (/ F4 r [% I* j! v) w8 B
- `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,
! y7 I( S5 [) M/ v& c% b - `cate_ParentId` int(30) unsigned DEFAULT '0',: R, U* E+ S& L/ J3 c
- `cate_Name` varchar(100) NOT NULL,
8 `. X* l* s( E3 v( B# b - `cate_Intro` varchar(500) DEFAULT NULL,
& L {5 E2 r/ ~. F# S9 q - `cate_Order` int(30) unsigned DEFAULT '0',. V8 O9 O7 J/ o7 w8 `+ q0 D
- `cate_Icon` varchar(100) DEFAULT NULL,& T; u+ c9 F! S. [( K, s
- PRIMARY KEY (`cate_Id`)
- n7 |" }, Q1 F - ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;! S; }0 E6 U' r) g2 Z$ ^; l
- --- R. J7 A4 W, C! I1 ^
- -- 导出表中的数据 `bg_cate`
8 @9 j2 t/ ? y6 H7 R5 P# X: ^ - --
2 Q/ `$ a4 W; s. u2 H - INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES7 s+ d( M0 Z6 p# m% K7 P
- (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'),
4 j* \1 y5 `2 s2 ]8 y - (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif'),& t' q0 q: z. Y6 x$ o& e1 f3 t
- (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'),
) f% m! U: L3 P% G+ l+ t J+ {7 M& B - (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'), u- M8 g5 r& u( Q
- (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),3 f2 x- D1 Q7 i& H' C' z) J
- (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),
1 V; A, C0 e- |% M* D - (8, 2, 'html', 'html学习', 0, 'icons/1.gif'),
, d$ l6 m- v! X: l' n' f - (9, 2, 'css', 'css学习', 0, 'icons/1.gif'),
4 L- ~ c6 X, G J - (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),
% _8 r* |( ]" u - (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),
) o- v. k6 @, n - (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),
: I! t: n: V8 i0 \9 g' b4 U - (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),
7 K4 d& F" e% S9 Y - (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif'),
+ ^& n9 s4 g/ ] - (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'), S5 \' j0 N. w- j2 \
- (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),
# P3 B1 C% Z: A3 R/ Q. u - (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),' {/ A2 X. ~/ q% H& d2 d
- (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif'),, C$ z" q1 f7 w* _) ~, }
- (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'),
, z9 s& s+ ~, c3 M6 ~' D - (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif'),
3 O2 [! F2 \: x - (21, 19, '学习', '学习', 0, 'icons/1.gif'),$ f+ L3 a3 V2 G, [+ |. ]
- (22, 19, '运动', '运动', 0, 'icons/16.gif'),
2 Y1 |/ |* b R" m* f$ l: s& c/ T9 r - (23, 19, '旅游', '旅游', 0, 'icons/24.gif'),5 e( C0 V D6 z( `" l+ C
- (24, 22, '排球', '排球', 0, 'icons/9.gif'),
: ?1 ~; G9 ?) R# \. H4 }. N8 p, V - (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),; d' a4 K( N( p0 ] J
- (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),
6 V: d$ q U5 S+ b6 M. 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。2 d6 Q2 I) i# Q* x5 i" }
- require_once './classes/MyDB.php';
- A X$ l! Z/ Z, k7 }4 s- { - $con = MyDB::singleton();
|! b4 x0 x* {) M - $sql = <<<SQL2 ]: a9 a/ y9 P+ P
- select * from bg_cate cate
& `3 a1 D3 i7 p h; b, V - SQL;2 U# n9 X. U9 M
- $data = $con->getAll($sql);
" b; C6 y% u8 R. C - //print_r($data);
复制代码 数据库操作我用的是pear类库。
2 G6 Z! n% t+ K1 j- X+ S最后的$data的数据格式如下:
, k' | b* K0 [8 q- G5 h6 O- Array, C/ i8 q; p: t) y2 Q
- (5 A! a! H7 g5 Q5 i1 F9 m4 h9 ]
- [0] => Array5 D8 h3 r- O, a" E" W- m
- (8 h, n8 x2 o; x( Q+ z2 o( X
- [cate_Id] => 4' G6 ?' a0 [- C( V9 G( e y, k2 m
- [cate_ParentId] => 0
7 m/ S- B, z! K0 u' F/ _ - [cate_Name] => 往事如风 ]2 N" ]# r- T% M& R3 ]4 n/ K1 H6 _+ Z7 s
- [cate_Intro] => 记录往事5 }1 {" [4 I! W& x& y) _5 I5 m# M5 f
- [cate_Order] => 09 O x9 J3 n% x9 }+ a! L
- [cate_Icon] => icons/6.gif. h# e1 H# ~! t4 r/ N
- )# Q' P) R0 ~: x- f# S' Z( [, v
- [1] => Array4 \3 I% F- h* }+ x* k
- (
$ B" ]2 [4 P, [5 A) s% b# ^ - [cate_Id] => 5
6 N. b D- e" L7 G' n2 S- O* g3 M5 p, T - [cate_ParentId] => 0
2 O/ C& H" C% V& a0 u) { - [cate_Name] => 水煮三国
" R7 k' z- _1 r: I9 ^4 G! r - [cate_Intro] => 品位三国智慧
: ?0 \& O" t6 F% ? - [cate_Order] => 08 D9 z7 M M+ @4 P
- [cate_Icon] => icons/3.gif
2 B" D) u& ~- c5 @" x - )
复制代码 三.把上一步的数据转为树型状的数组& {9 A% X8 ], W9 \: I/ l
代码如下:8 v* l' \4 Y1 M5 e- |4 p x. V9 y
- function getTree($data, $pId)
# l' h# r( c/ b* V7 z! u - {
# j+ X( A3 u$ U7 J - $tree = '';
9 r9 y7 U$ r+ T1 M - foreach($data as $k => $v)
! y! r0 e+ Y# [' _; h - {
3 D* A# {( V, ~, m3 {- s/ k - if($v['cate_ParentId'] == $pId)
# K. z9 p/ F3 L o- ] - { //父亲找到儿子
" L, L$ T" q# Q4 A& v2 T6 D! n* P - $v['cate_ParentId'] = getTree($data, $v['cate_Id']);
+ r" w& P8 i; z( t' h - $tree[] = $v;( T; h# [0 E9 @# [) X
- //unset($data[$k]);7 k& v1 m: f. O! Y8 a# Q; l0 {
- }- x+ r% o4 ?3 B3 s
- }
9 y& z0 b: ?, Y2 B/ C* @( I - return $tree;! Y1 d& z1 \6 ~! ^/ o' N; I
- }/ ^+ a4 J- N+ Q: Y! E P& M9 H$ r9 N) a
- $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:
& g, ?! C v/ h% z- Array
0 v' B e' M4 g9 w - (6 V! R# l. }( F0 X
- [0] => Array
* X% c/ i( J& F/ n* [/ Q6 H - (5 X% R: e) ^$ q6 Z5 E
- [cate_Id] => 46 J& T n; U, r( U' c: d6 g
- [cate_ParentId] =>3 G) g! ?- B5 Q: d7 R5 j
- [cate_Name] => 往事如风( ?: i. X& {/ S3 ?' ^# l
- [cate_Intro] => 记录往事% @. g8 Q7 L! w' W5 u% |6 s/ A
- [cate_Order] => 0" I1 @2 ^4 e0 i( n$ y* S% v5 @
- [cate_Icon] => icons/6.gif: @' H6 Q( G: I& y
- )
/ R, t+ v# g1 s6 S$ Q - [1] => Array% k, A w6 Z% v8 ]( Y
- (/ `6 s+ i( K8 w: [# {7 r# [, }/ n
- [cate_Id] => 5
% P P' P4 y: c$ B - [cate_ParentId] =>
3 k" D1 c! |% i - [cate_Name] => 水煮三国
3 s4 y" u! L4 H0 i3 ^5 l - [cate_Intro] => 品位三国智慧
; {) E7 ^. c; ` _: ~8 Y, Q( `$ z - [cate_Order] => 00 e- l+ u9 o7 s, G5 w- R2 d# `
- [cate_Icon] => icons/3.gif5 W$ ?% ?' ^: }/ x) N) B
- )
! q( \ g7 r. `* w; l# A - [2] => Array: @ Z1 v% H$ Z0 t3 H7 ?) v
- (( ~* Z. s( _0 ^. I, R
- [cate_Id] => 21 _% q3 k6 Y. G1 R% k4 @
- [cate_ParentId] => Array! w# ?7 \- P U4 d* x
- (
" R& c7 M0 M. ~' w/ H - [0] => Array" N4 a1 o4 _$ W# l
- (
- e; i9 [) ?' N0 Q/ n1 A+ c: U6 h - [cate_Id] => 88 }. ^3 X& M5 x4 j
- [cate_ParentId] =>* X- J) s# _% ?2 X4 H$ @
- [cate_Name] => html
0 O2 z" _8 g* }( n. U/ @ - [cate_Intro] => html学习
: |6 G" }" }$ |4 V- S - [cate_Order] => 0
0 m0 M% Z. U! E2 y' z) t - [cate_Icon] => icons/1.gif5 B* k! i+ [0 j( }
- )
复制代码 四.把树型状数组转为html3 R* J5 P8 \, ]" t+ Z! g4 R
代码如下:8 M2 z* Q0 k3 V, d
- function procHtml($tree)
( ]1 F, m* b- P0 a - {
. L& h. T% d1 |& ]. q0 L - $html = '';
& G6 A+ T" A3 `" n0 o1 p& }& c - foreach($tree as $t)" k4 L! O( c$ b! z" ^/ Q
- {0 g R7 I8 o/ k% `+ D
- if($t['cate_ParentId'] == '')
) w* k0 E0 F- Q" D - {
$ }# I) h8 T2 S& @4 l( s: Q - $html .= "<li>{$t['cate_Name']}</li>";
8 L' H1 O7 e% T6 u. L6 N3 P - }
% q, @1 X# @% ]7 Y% V4 D - else
2 {. ~$ i7 u3 U2 ~% v R/ T - {
: p, i: y0 w' ?7 h: [" [; N - $html .= "<li>".$t['cate_Name'];
. ]# s; N) y2 c& I* J; @ - $html .= procHtml($t['cate_ParentId']);* e3 V% ?) R) A$ e" N; i9 w4 {/ Z
- $html = $html."</li>";5 T( g4 c) G% J
- }- D" I/ [ l4 r
- }' I) w g8 L* a+ P; S
- return $html ? '<ul>'.$html.'</ul>' : $html ; G, K; H9 \! _
- }7 h7 ?8 s' c4 X' N: l
- echo procHtml($tree);
复制代码 输出的html的代码格式为:
7 c9 L% c( R7 q: J% F- <ul>
( v+ d7 N) j% ?$ z2 G) E0 K - <li>往事如风</li>1 }: }8 C e5 z4 v" ?* _
- <li>水煮三国</li>$ Q' o- ], r! U8 l$ R& z( w
- <li>技术学习
* K2 t3 J5 w- ^8 v" |$ K/ y - <ul>
) N" `, h' J( K! N( g9 }" v( s - <li>html</li>& [3 h% p% u! L1 }& S
- <li>css</li>
& D) a. B+ y8 k% W - <li>php- n4 W6 A6 L+ W5 R1 L
- <ul>
- t; [& h. M' A! R. { x - <li>php基础知识</li>+ ]# E A8 R: E2 |
- <li>oop</li>" v4 L8 n2 s0 Y" C3 V
- <li>php安全</li>
复制代码 五.代码整合
7 x: R' C( N. K& x! N1 s- function getTree($data, $pId)
1 r/ I% u, U# T, s7 r2 G - {
) l1 i6 B1 G% }8 n% T3 m9 z - $html = '';: @" w) A Y5 j
- foreach($data as $k => $v)
/ M5 n+ p$ ~5 l2 t* k3 _ - {. Y7 ?! C( X' j) s7 r: t/ T3 f
- if($v['cate_ParentId'] == $pId)+ C1 W# k) k5 L% k
- { //父亲找到儿子
1 s! j- D" V1 w9 s9 x: s9 } - $html .= "<li>".$v['cate_Name'];
2 ~) x' b+ z' [ - $html .= getTree($data, $v['cate_Id']);
% x- t. g0 X( y0 E - $html = $html."</li>";2 Q2 U8 g5 d% h- E# r% h" y+ F" y
- }
. W& y/ I1 A9 S6 I1 F - }
?: z, Q% g Q) t" x/ m - return $html ? '<ul>'.$html.'</ul>' : $html ;$ S+ |% Q- h" I" O5 G
- }$ t7 T7 \% R" N( b+ [
- echo getTree($data, 0);
复制代码 六.增加CSS样式6 {: k; U1 m+ n6 e1 L1 @: o* r" Z
/ D, C3 p$ {2 p6 i: g" `9 F0 q/ z8 D' o9 V8 o6 z8 N: }& q
第二种是从开源网站上看到的,非常非常的简介。
, c1 P8 K0 V0 ~3 S- <?php
& R( [* P; P+ f- e, s: U3 _3 n -
0 }9 v9 L. i. U( b; s4 x7 m - function genTree5($items) { & Y' A. S8 T2 ^6 m4 h+ t3 w
- foreach ($items as $item)
; U5 ?4 }: C4 F+ K5 N& y6 k) l# r - $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']]; ) f$ x0 L# \% X
- return isset($items[0]['son']) ? $items[0]['son'] : array(); J, ?+ f* q' L' N/ L. H
- } 8 e! G0 |2 }! t5 Y$ W' g8 k
-
) K3 e4 B% E2 [0 U& o4 C4 G - /**% |& B. v/ L% K$ k2 G6 f' \1 n% F
- * 将数据格式化成树形结构4 x& z5 z+ D! S s# a/ n2 E
- * @author Xuefen.Tong& z/ v* }0 D. g$ Z7 z
- * @param array $items2 X. ^- y7 x4 v; I2 G# u0 Y, y5 |" Y
- * @return array
+ e( H& n# [% Q9 S# I9 @ - */: ^( G+ k; z8 q. u7 R% [9 {. j
- function genTree9($items) {
7 l. k/ p5 D, q2 l( U* H - $tree = array(); //格式化好的树
3 `% \0 [4 [+ e9 \- U H: c0 z: S - foreach ($items as $item)
- F3 h7 u# d- \- F3 J - if (isset($items[$item['pid']]))
5 F1 R8 l6 l3 W2 }0 c, g - $items[$item['pid']]['son'][] = &$items[$item['id']];4 Q. z! M1 {! ?1 _, v" @# z
- else- U% {7 M7 T. n9 X, `
- $tree[] = &$items[$item['id']];
" R, t+ o% m4 B5 Y5 k3 ` - return $tree;% z* {. a" X* w( F8 [
- }/ y% V5 `: B" J
-
) }+ X1 w4 x A5 N6 N, u - $items = array(
! F# c9 P& W8 m* `7 h9 N& G - 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),( T9 _& { g) I( J6 Z" o4 Y$ s
- 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),6 H4 v; [1 l: L3 k2 t5 W
- 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),
! o5 n5 W5 B) F - 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'),% }& D Y3 `: s0 H6 n# g
- 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市')," P" Z+ v# e# m' L) j1 a% a
- 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'), l: |: f+ i+ J
- 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'),
6 Z# u( v O+ Z. j; B - 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'),
& L. c- F; Y% ?) F - 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),6 M3 k1 W5 f. h/ v* y$ l- `
- 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),
/ |) H0 R, x5 m( S& K. m0 U7 G - 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),
- R1 N4 O/ ~5 i: ?7 m% h - 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学')," v9 O5 l) h' {; p/ U
- 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市'),! ^7 ?, h) H* N6 j
- 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'),! M" a8 r9 \. ]% J+ G. @
- 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县'),! Z% u3 a' y3 }; `: K
- 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),( ]# s% Z7 d0 w7 k5 h
- 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),
) c4 @+ H9 V$ o& A% w& c9 ~ - 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村'),
( R4 ~9 T, N1 }& t9 Y, r2 i - 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村'),
. P3 D: `! t% U& w+ P - );
; U% Y+ D0 z3 J9 }; f - echo "<pre>";
& F$ Q# o( v4 d0 ~1 }: A - print_r(genTree5($items));3 k& ]! Y3 p* E3 c
- print_r(genTree9($items));
$ h8 \ W* T) D% P, h -
, K0 z; W) t: S; W - //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
2 F( x4 f/ R6 m2 U8 }, h - /* \5 k7 P- B* k/ m8 g8 z
- Array
$ h! w6 P/ ^ Y G* j- E7 u - (' O; Q/ r. O# k" `
- [0] => Array
4 S; d: \& |: d# C4 q* ~; \% d - (
; f/ P, x5 A4 g+ d3 a+ \# `' W - [id] => 1
5 g5 M) ?% ?/ f5 T( l% \+ w - [pid] => 0
/ n; r6 H1 v! v8 k: { - [name] => 江西省
9 J0 O* P: X: S9 G9 p - [son] => Array
: i5 ]( P/ u" R. F) {0 w - (2 a5 l0 I8 h' M! n
- [0] => Array ?2 Q. x N S* }7 L
- (2 J0 e# Z3 D/ f$ Q( n% F: s) q
- [id] => 3
) G( z) S' u5 [ v/ S' s - [pid] => 11 |5 }# J& \6 M# J( u& d; b
- [name] => 南昌市
. z. v# c9 ]3 R' \, `( T3 }( _7 m - )
3 y5 p9 r& L( Q6 \: Y- ? - ( R8 h# T# I' ^# K. H$ x
- [1] => Array
: B# `! L5 X4 o1 O7 ?- j5 J - (# P6 D" x3 l: L
- [id] => 13
4 P# X4 o* [! F - [pid] => 1
- Q. f" G9 U, m - [name] => 赣州市
7 C: f0 E' Q8 l: O: Q - [son] => Array
6 R( l4 b: t2 a: ~ - (0 j! G( ?1 f e1 {2 {
- [0] => Array
; x- g0 P! M# m' m, i) z - (
3 d6 n9 h9 p8 r! V6 }1 ~ - [id] => 14
$ v2 r6 _5 h3 S ^ - [pid] => 133 [, h* ^/ e7 l1 z: V6 ?* _
- [name] => 赣县. h2 P$ J% e w1 Q/ P3 `7 ]9 S [
- [son] => Array& B( ^, n$ y z0 v- ]0 t
- (* N% l( y0 \) R7 | c6 i" v+ Z) ]! l M
- [0] => Array
2 ~9 V6 ?+ {" U; r - (
$ @. s3 v8 ^/ [) D/ L - [id] => 16
6 v+ l4 M/ y! R$ ]0 V1 f- L - [pid] => 14
+ ]& r b& c7 Z+ s3 w8 C - [name] => 茅店镇1 z/ N p5 _6 b2 k2 L
- [son] => Array
$ q& G8 H( U' G8 p1 _ - ($ f4 B K! \3 g5 C" d( n F
- [0] => Array* \+ r$ P3 [9 B8 r/ R7 T q
- (
7 @- k7 \1 |8 R/ G# F - [id] => 187 x/ z1 M* G' @& y0 v
- [pid] => 16
1 R- z- ~6 e0 |6 ? - [name] => 义源村# i" c; j2 w8 R7 i
- )
# d& {' Q G" W8 O8 v -
) V3 |' H: w) x" U( R - [1] => Array
; _/ B5 O1 G1 e& }: q - (
0 a) {! Q' w0 f8 n1 c6 ?9 @0 N - [id] => 198 Q( ]( h7 W$ }# s/ [# a* i5 p/ _
- [pid] => 16
A2 ?! Q; z, \% [ - [name] => 上坝村
7 o# N( k& o W- K- I7 n# j - )( d, i" Z: h1 \) I
- ( L9 P/ F- o" p# ~. M
- )+ I+ k. w6 P1 I( |2 ~
- ) C; F* Z/ O6 d! _
- )
% J( c1 q' V$ l; Q4 x - : h. q" f( Q, P2 S5 S/ N/ {7 ^
- [1] => Array8 U1 a6 ^% g. e* L, |2 _
- (
) \ g3 I, i3 @5 Z: c) h - [id] => 17. _& i* D T- ?- l
- [pid] => 14( v" b9 d9 V0 {0 L6 R
- [name] => 大田乡
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- [id] => 15 n& b+ F4 F0 P% W- `$ c
- [pid] => 13- K2 Z3 @4 c- A- f, a! n
- [name] => 于都县
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- [id] => 2
9 ~, ^# j- ^: X" E1 F - [pid] => 0
6 d: o$ b X6 o# S - [name] => 黑龙江省1 O9 z. J$ Z G0 q
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- [id] => 4
m' @- g0 n2 `7 M& z5 k# t, G% _ - [pid] => 2
. E- I$ r" ]. P. _ - [name] => 哈尔滨市' v# Q2 }* [, o
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; p% b3 \. J& _7 g7 D F' Y' d* _ - [id] => 6
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- [name] => 香坊区+ \7 F* B" R2 w
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- [0] => Array
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- [id] => 8
9 J1 \* e* ?. ^# ^ - [pid] => 6* J/ c6 X+ r+ i/ B9 Q9 N1 w
- [name] => 和兴路
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- [id] => 10
0 i5 y& e5 m' q' A, J2 Q1 |9 b - [pid] => 8
$ l( `4 B; N0 B" C- p1 M" P - [name] => ; f$ _( D' U3 l
- 东北林业大学
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- [id] => 12
% a1 p- |) k" f3 S6 K+ z - [pid] => 8
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" q1 |" a' a1 [$ z - 哈尔滨师范大学1 O6 }/ v# W0 Z$ N
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- [id] => 7' Q+ F# W" i9 Z$ |: Y
- [pid] => 4
\/ K$ U2 ?& E6 |3 V- j- T; l - [name] => 南岗区" m5 o; p+ D6 S" i
- [son] => Array7 H6 N5 M- d6 U7 u4 r) Q7 p
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- [0] => Array+ }: P! K' e' H& p, [+ |
- (% w4 C- }8 @# u" g+ e
- [id] => 9
" t; D, r( _ [6 U @. n0 x7 ` - [pid] => 7
5 i7 g8 _' b" e* I$ u0 @ - [name] => 西大直街/ b: Q5 z. |/ l2 R k5 l3 X; x
- [son] => Array
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- [0] => Array
x) \! I5 V1 p. I - (
# r, }% @) F2 I+ k1 N7 X* U6 ^ - [id] => 11
& L4 I m4 i. m$ F8 N# \0 T - [pid] => 9; z: S+ m+ W* ^8 J
- [name] => . m8 {! T" K3 w: c$ K% N
- 哈尔滨工业大学/ @4 H" `3 {/ y& O( ^( N2 |
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8 S6 [9 e# Y& Q! O( {" h - [id] => 5" s V- Q2 I! g0 I0 ?3 A3 |
- [pid] => 2- c% v4 n' k+ Q
- [name] => 鸡西市5 @. L9 a8 {2 f
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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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