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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。% D1 }: r- y" k' {& W3 ]
一.数据库设计) U" h# b+ E0 _* H: V0 K
- CREATE TABLE `bg_cate` (
- e+ H E& f0 j0 j - `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,
2 `8 O$ R, x/ P* @* t$ Q - `cate_ParentId` int(30) unsigned DEFAULT '0',
% z" |4 ` Q& K$ J6 G0 f - `cate_Name` varchar(100) NOT NULL," |- s% ~ b" @) ?6 q
- `cate_Intro` varchar(500) DEFAULT NULL,7 _/ s4 }& B8 R, o* z
- `cate_Order` int(30) unsigned DEFAULT '0',
' h. ~. h6 J& x6 h4 q4 {8 B - `cate_Icon` varchar(100) DEFAULT NULL,9 s1 ]* V. ^3 L
- PRIMARY KEY (`cate_Id`)
+ `# _# A- G4 u6 T. o7 M - ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;" N6 N/ [' N& c4 J
- --9 @3 N# s1 ~1 J) I
- -- 导出表中的数据 `bg_cate`' t9 ]% }! q& M8 f9 {+ Q/ w
- --4 [8 ~" \6 t* T. |, @# R1 l y1 S- C1 ~
- INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES
2 j& e" I& J1 B- p$ m4 U! P; ~) z - (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'),0 P7 A8 m" P( j- d, G0 m
- (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif'),6 m8 A: r; \9 v" I
- (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'),
9 b$ h! \0 [5 |' _* R' c3 i - (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'),
+ [- i+ z+ e( }. O% J6 \# C - (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),
" o; z7 t" k, o7 t; c - (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),6 m, n- O) S. A: F" f2 s$ z3 [
- (8, 2, 'html', 'html学习', 0, 'icons/1.gif'),+ Q: L. W6 |; l+ Q4 h9 ]
- (9, 2, 'css', 'css学习', 0, 'icons/1.gif'),
! ^! }" ^$ h8 ^9 O- I, d3 |* { - (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),
4 [( k+ w% y/ A& m. G - (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),
$ m) e+ U9 \! d$ E; A - (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),
, W% x+ m" A1 F/ j( M( e, }/ H - (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),
9 [$ l! z+ @' O# t4 b5 S - (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif'),
0 e5 x2 Y7 B- ] - (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'),. ~9 L6 T# v0 Z
- (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),9 k. ~& T; f( C- t8 _- A3 t4 G8 e
- (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),
: C! F6 k m2 a) w6 J0 m - (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif')," I4 p; \, z$ H1 G: P3 H
- (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'),
$ K* S! |0 E& \6 { - (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif'),$ _" i4 B @, d/ W& l: i+ {
- (21, 19, '学习', '学习', 0, 'icons/1.gif'),
3 o. Z# u7 A3 v2 Y# S. {! f - (22, 19, '运动', '运动', 0, 'icons/16.gif'),, u, Z/ b% c8 s0 Q
- (23, 19, '旅游', '旅游', 0, 'icons/24.gif'),, X- X; W$ `8 z+ u5 n0 S1 U; ~* A4 v
- (24, 22, '排球', '排球', 0, 'icons/9.gif'),
7 i$ r9 H$ U% M! N# d( s! b4 i - (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),& M6 @6 q. w: R! b% q
- (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),' i# o5 ~. n2 F" T
- (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。
4 M6 f' C ^% i! v/ v2 F- require_once './classes/MyDB.php';
$ R, V4 m7 B# j! A# Z3 i7 a - $con = MyDB::singleton();9 D c6 \- N7 i) P% \
- $sql = <<<SQL: b7 M4 m# C% {1 W g: l
- select * from bg_cate cate$ h$ d9 j% U- ]3 v
- SQL;
" m1 W# o. \$ p$ z5 X1 O" y - $data = $con->getAll($sql);2 L& ~* x5 m1 g9 g4 C, k( G
- //print_r($data);
复制代码 数据库操作我用的是pear类库。
! U- k5 i0 k% r4 v5 K最后的$data的数据格式如下:# r8 z5 B# B) D( L. E; Q$ P3 C
- Array
. l. m+ c/ }7 _( A* G s4 x - (
4 [; _) a4 o* n/ e3 {% F - [0] => Array) Y% E+ X0 }; J3 w
- (
/ E; |- K! I t - [cate_Id] => 4
6 q& K& h6 n k. l - [cate_ParentId] => 0
. R6 i& m% j! T7 l; s' E - [cate_Name] => 往事如风/ b% ~5 V. J7 C8 ^) I" C0 i4 X
- [cate_Intro] => 记录往事5 g" ?- w P: q0 i: k
- [cate_Order] => 0
% V2 Q. N2 z. Q- y% M5 Y+ Z \ - [cate_Icon] => icons/6.gif. @ K( i+ ?: X7 p4 W
- ). z1 k/ C1 e# R
- [1] => Array! {0 i. D& T; r8 R5 t( k
- (4 e3 L% b' v2 ^) C, x
- [cate_Id] => 5" z+ _2 q3 p, z/ C! U) p
- [cate_ParentId] => 0- V6 A- I* v. M# Z/ O6 K& @
- [cate_Name] => 水煮三国- S$ o3 p" E( X8 @
- [cate_Intro] => 品位三国智慧
0 p/ f* e4 u' p+ ] - [cate_Order] => 0; [6 b; q' P9 B/ q
- [cate_Icon] => icons/3.gif$ w+ w7 J! ~8 t0 K
- )
复制代码 三.把上一步的数据转为树型状的数组- |+ n6 v& O& k0 R, X4 g
代码如下:( i, g$ p* v! j, w, n8 Q
- function getTree($data, $pId)
; m! J/ M4 j+ c% A! [7 p - {& N+ }# @6 L! q! F- {, Q
- $tree = '';
1 O' B# I+ [+ u8 r. g - foreach($data as $k => $v)
9 e: Z+ X" g# c - {
0 I" g) ]5 O' W: p. } - if($v['cate_ParentId'] == $pId)
5 p! S# e1 e& P3 d1 Z- q u5 l9 W - { //父亲找到儿子
$ g3 \+ h+ t' C7 |9 I* p& E0 k - $v['cate_ParentId'] = getTree($data, $v['cate_Id']);
9 z% _' b0 }& ~. o0 }! {1 J - $tree[] = $v;
# z4 x7 n4 \! y" W% {4 t - //unset($data[$k]);# i( k$ \/ k) b4 v, S1 {3 H: i1 A
- } J. f' K: i( d! `; O* l1 j- O8 _
- }
& [# L1 Q" H5 K/ w& ~) r- a* w3 d$ B - return $tree;
9 j3 r# I% {5 S1 { - }3 `7 V/ w1 \2 ?* ]
- $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:+ d. B7 @% \+ F4 c$ q! j3 Q( e
- Array
1 l) {# E" o* @: A - (
- u- T% @/ r! _ K8 F: a, z - [0] => Array
) D7 A, W$ G/ o4 `5 |* n7 l) y - (. t6 A0 X/ {" Q
- [cate_Id] => 4
$ t, o2 O3 [" m6 M' p+ o* ^ - [cate_ParentId] =>9 a# P2 w& w# W5 c# R* @
- [cate_Name] => 往事如风6 T7 d* P4 m, X
- [cate_Intro] => 记录往事
2 l8 X' O+ |2 X; m) r! l0 T% H6 G - [cate_Order] => 06 z" B) h6 K9 O7 `" Z# }$ G* U
- [cate_Icon] => icons/6.gif& q% M; `* r" l$ _3 F8 e5 x- G1 U
- )/ k' T( Z: C! _6 c% e5 u6 v
- [1] => Array6 s+ H& H5 X" S4 C3 A" I
- (7 t" `3 V' O! l- V+ L
- [cate_Id] => 57 k# ]- P5 t1 L2 z) d: K8 n
- [cate_ParentId] =># ?# A8 `/ X6 m( y
- [cate_Name] => 水煮三国
; T' G' N) Y& }+ |8 N - [cate_Intro] => 品位三国智慧
3 p* _/ {+ j; s4 b$ J/ c f - [cate_Order] => 04 X# m7 `( ?( C l
- [cate_Icon] => icons/3.gif) _$ t w( y9 S, B# u5 v8 U9 B6 H2 K
- )
$ |/ P2 P1 h4 o+ [6 Z; x$ A - [2] => Array
3 e" b$ O, H k# u: T1 C - (. N* g" Z6 P3 T2 E/ ^2 x4 i
- [cate_Id] => 2
. S# B2 n/ u1 @, r9 ? - [cate_ParentId] => Array0 Z0 K& m C7 C
- (
+ C& h# P$ i' `1 M c/ R - [0] => Array
: x$ K. u" h/ e! Q. i - (' k; k. t) Z! _/ O5 J. n
- [cate_Id] => 8
" `: o. y5 `* n8 l2 R4 l; k - [cate_ParentId] =>, Y8 @- t$ n- } A
- [cate_Name] => html
O2 V' b0 H& m" e; w5 {+ {) n% ? - [cate_Intro] => html学习( [1 L3 s8 j- u n/ t Z9 o. c6 W2 ?
- [cate_Order] => 0
B- z: L' t$ k8 h - [cate_Icon] => icons/1.gif S) y8 L' a- `$ s) _
- )
复制代码 四.把树型状数组转为html
3 W$ j7 W3 O+ j" a; S8 x代码如下:
0 N$ w+ j& I2 L: Q) O- function procHtml($tree), {* O) C/ S2 T4 z6 f; j
- {- \! d$ J3 U' e# R& {. U7 g
- $html = '';" y* T6 m/ b; S9 x Z* ?
- foreach($tree as $t)( y/ |4 m/ ^% r! Q
- {* ^- @9 H ^% a. t! ^( I' P
- if($t['cate_ParentId'] == '')
! \ J2 e5 U0 h0 C+ w) t - {$ @' K+ W7 b: q" @- C% B2 o
- $html .= "<li>{$t['cate_Name']}</li>";
2 V) S# x" K5 T1 q0 G# E - }
% [' C) g; m1 k - else
+ |, x w3 E, z! x4 g# I - {
5 A6 O7 z2 [* c; ?7 G - $html .= "<li>".$t['cate_Name'];
9 D0 T" d2 T0 f& K: n4 y - $html .= procHtml($t['cate_ParentId']);
) e& e7 j0 D2 M - $html = $html."</li>";
. R0 a1 E& z- N+ G7 }! I' | - }
9 o$ F& |" D- s( H3 B9 q - }
+ ~! s F. [9 }* p; R - return $html ? '<ul>'.$html.'</ul>' : $html ;
) T* @8 [6 y* m. L( F6 c$ ^2 Y. Y - }% W* B. f7 L- z" y9 x$ @
- echo procHtml($tree);
复制代码 输出的html的代码格式为:
8 Z0 M {, @8 V) |: r" A' e- <ul>0 F1 c( {4 A1 X+ ?: K. C
- <li>往事如风</li>
$ e& u8 s; \& t3 C: j" N - <li>水煮三国</li>
! O6 [/ K6 W5 {5 y - <li>技术学习
# B# W8 S$ ]2 p: C4 D7 }- w# l, |! d - <ul>1 ]2 N. N. R! g9 H8 |6 y. l' w4 k
- <li>html</li>
+ G+ E) b# O' x0 f - <li>css</li># A* i/ d! g* m1 a; S3 p% F
- <li>php
8 v9 ~/ ~3 P: r1 X4 U - <ul>
! J0 E* t9 q* E5 u; l1 D: W - <li>php基础知识</li>/ k7 m" `7 \6 E% R' V, i& ^
- <li>oop</li>! W1 f) u3 Y3 E
- <li>php安全</li>
复制代码 五.代码整合8 K6 }2 s- V0 F6 X6 V+ b" U
- function getTree($data, $pId)3 g4 b2 R) m( ?& A( k+ N8 k( l
- {8 F; d% y- D0 y: J$ g0 c' {
- $html = '';2 }: b }8 @! M& ]! a
- foreach($data as $k => $v)7 Z% R# U+ ]9 u+ t% h# c
- {/ [0 l5 K v7 z: E7 `
- if($v['cate_ParentId'] == $pId)
- |% C, c8 [' K7 d9 |2 u& G% o( k - { //父亲找到儿子6 c% P5 t: s" ^) n+ v
- $html .= "<li>".$v['cate_Name'];
4 `( ]3 J0 }% g4 U2 ^+ @ - $html .= getTree($data, $v['cate_Id']);7 E; h( Z! f4 x: S
- $html = $html."</li>";! f+ M. r2 S4 D5 M, B
- }
/ u( Y0 c8 u3 v/ l1 H - }, I" [2 [# L+ @8 b" C
- return $html ? '<ul>'.$html.'</ul>' : $html ;# Y% m8 z6 Y- T2 ?8 R* J) l
- }
; T6 X, n- E' h, Y. Q4 e+ Q. m' j - echo getTree($data, 0);
复制代码 六.增加CSS样式
/ v( g, J1 D4 f3 ^2 s7 t
) I' e* C5 j5 R& x
/ e$ T# W* o' `: a8 v第二种是从开源网站上看到的,非常非常的简介。
" @# Y: e' z. X* y3 p- <?php9 z( ]; J, x* [
-
( p8 Y2 ?' D2 a. q8 J. \5 g* W - function genTree5($items) { 4 P# a) t) m8 c8 b6 Q
- foreach ($items as $item) ' K( j5 _) R5 Z( V2 c8 l
- $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']];
! L1 b" ~; ` U! \3 {+ i - return isset($items[0]['son']) ? $items[0]['son'] : array(); - Q5 Q# {# p1 ~- r8 l% A8 F8 @
- } 6 F7 C5 P5 k1 q7 B' G: `
-
# F. c7 _* m% ?2 x! O, D - /**: h8 [4 ^' F ^" x
- * 将数据格式化成树形结构
- k+ ~ [9 L5 z& T1 D6 S3 M - * @author Xuefen.Tong2 k9 `8 G! T2 ]; t
- * @param array $items+ r w8 w# {% A9 K) b7 i
- * @return array & L% b, F7 q+ m/ R0 o" O
- */
/ J3 E+ y1 }- L6 o - function genTree9($items) {: Y7 A. w" u3 T- }7 d! F
- $tree = array(); //格式化好的树8 ~" y7 q/ S( O* {4 C+ t
- foreach ($items as $item)( g! n, [' N' h' o/ _4 |& [
- if (isset($items[$item['pid']])). e7 o2 M$ N$ c; _9 p
- $items[$item['pid']]['son'][] = &$items[$item['id']];
w+ ]; I. n/ { - else
4 |% @# G6 k: G4 }' u& }! A& U- O - $tree[] = &$items[$item['id']];
4 _4 A7 U0 v" y* \% }9 h& b- p - return $tree;$ `, p7 F* B' ^& ~& {
- }3 ^4 e) }6 V* Q0 L" y
-
4 b' G8 I$ {7 v8 v, E1 { - $items = array(
/ d; H5 @; ?/ n5 ? - 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),
: D9 y! |' @* O6 |0 i7 B - 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),2 @7 ^7 q6 A) W% Y
- 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),
2 m8 [ Q u% i( h' _7 S6 i5 H* Q" m - 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'),7 _& T6 _. A! b6 h$ k7 P' [
- 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市'),+ ~9 y) Z. U6 e% B3 A- n
- 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'),
9 x) n: c- [- a - 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'),
+ x1 M0 q- Z# Z8 x$ W4 n0 l% \ - 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'),
* N) F- h+ B4 |8 U - 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),& J9 Q* u% _. F8 q6 K
- 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),
5 J: j$ @( ]0 T0 a% o# c - 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),
1 X7 F3 [; @0 P+ T - 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学'),' m% R* N) l' e3 t
- 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市'),
, C$ Q- A$ b1 U4 _ - 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'),: w0 \, P' \' f; g4 ~
- 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县'),9 M7 B4 M4 Y: E, G- [9 \8 I
- 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),
8 y b2 ^6 l9 G. ]# I# s, H! {& d+ m - 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),
p! i" u6 g( F0 l; \* k - 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村'),
" x, ` K; H# M. j% u' Z' H3 c - 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村'),1 d+ B' L7 f6 c. v) ?) U3 C
- );5 w+ M7 x% |% M( Q0 z
- echo "<pre>";
& f+ ~' A& s! u7 i, `+ l - print_r(genTree5($items));. x/ W* y/ E) m0 C
- print_r(genTree9($items));
- |, G/ P& C9 U1 T -
/ Q" Z% `; u( Z& k! L$ n - //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
; D( [. K+ F4 K, l# ?$ c# `% c - /*: a i. v* f; o4 \5 Z3 m8 _6 K1 v- O
- Array
" H; Z( X1 u6 [1 r" e. j# ~* r - (
2 J6 M/ b2 }7 R, w - [0] => Array
* P9 ^' U4 }) A( }$ b - (+ X0 D( n( Y( }
- [id] => 1- f( N% R4 I+ R+ V5 i! ?" ^" M
- [pid] => 0- n$ q9 c# d& `2 Z, b0 O
- [name] => 江西省
# m5 J5 J, N b" l; ^ - [son] => Array* s! ^+ z6 y+ r4 [4 n
- (
9 F$ N" E. M0 M7 ^6 u4 h: W0 ]: q - [0] => Array
- u. p! P2 X% `2 L5 c) v - (# x/ n4 q- `/ y- Z# J! T' }' m
- [id] => 31 {) @1 ]5 F, j2 o- K' m
- [pid] => 1
2 G; i& O1 ]! a - [name] => 南昌市
, h2 ?! y) O8 Z$ R6 u' a0 j$ h; d6 P2 _# j - )
2 t e, a; ?& K1 V7 t! }% e -
4 D) @. A0 y% s: d - [1] => Array" q/ w4 G$ C d7 ~- x- X
- (
5 P0 G5 Q( H" o/ G0 b, V( K - [id] => 13. c3 u& J4 z+ }( U, o( W) @! o
- [pid] => 1
6 S. o" O9 h6 \8 a0 U - [name] => 赣州市( T: T) W% k8 E
- [son] => Array+ y6 @1 J9 ]: e" m$ t
- (
/ b3 w3 s) P* s( J% w0 O - [0] => Array
0 t% N9 P; C5 v, W4 j" L& x. s - (
+ _- D$ t- \( I" N3 V - [id] => 14
9 j7 a8 y3 W+ ?) [3 r0 g- e. j- I - [pid] => 13+ ?& j% y2 q8 d; f# D& R; M( |* `0 q
- [name] => 赣县
" f8 S9 A' q/ o9 @8 E7 T5 F - [son] => Array G5 C9 p k5 }+ L! s3 Y) Q" n
- (0 p4 G6 O: [) Q2 O. ^0 q
- [0] => Array
# u7 X' K0 _ D- k) n) o# L - (
, V" H7 H2 a( z5 H! p4 E# x$ e" O - [id] => 16; ?9 |/ V6 D+ D6 r& l# L
- [pid] => 14
$ p+ T6 c- `2 @. Q - [name] => 茅店镇' Z3 k! [* p7 z1 K! ]4 L4 r
- [son] => Array
$ E J: p% v& c9 W" [* z - (0 W; y2 F. }+ z3 ^8 a
- [0] => Array
0 A& U. y& j* W! p2 S - (
5 B$ c: `. ~' D* A - [id] => 18- @: K! z$ ^" b( W2 V* y
- [pid] => 16
{3 i( E( c7 X% { - [name] => 义源村
; ?9 f% {+ _9 B - )
2 Y3 l1 c' C$ c) v$ d7 Q$ N% y( h* C -
7 a- W9 B0 n6 \' A; a/ N; j; B - [1] => Array
" [9 g1 Q* K* K( ?+ w2 d: c - (
1 [( k, S \8 r1 a5 X+ ] T - [id] => 19
( t5 |0 U! w$ q0 m. @ P" q. V - [pid] => 16
. T; L( @# M8 h- C6 E - [name] => 上坝村+ b, c, z$ l: Y' a8 K; |
- )
% i) X7 K/ s- P8 y2 t6 s/ S& h -
j; D" W# ]* g) }2 _- f% R - )% @4 t0 h: @$ c
-
7 m( @" J1 N( m' p0 ~2 q8 x t - )
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- [1] => Array
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- [id] => 17
# p! {/ `- W% @2 Y - [pid] => 14
9 i$ {0 N/ y" V3 o - [name] => 大田乡/ `( Y! g- H+ d2 q# X, f& R
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- [id] => 15$ O2 I5 D- a8 D
- [pid] => 13
! t7 z$ @ l" X1 n6 u" b0 e1 Q - [name] => 于都县
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- [1] => Array
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0 V" j# ^, ]( I: m3 r) i9 M - [id] => 2
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- [name] => 黑龙江省
2 p. p# i8 ?# x- Z - [son] => Array
7 ~) |' K% O4 U% }0 G( K, x - (
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- (6 E: m; {% B J; V4 S$ m/ n) S t/ {
- [id] => 4
; F; i4 {3 q* q - [pid] => 2
# y6 h- l* q0 ^8 B3 b6 @4 {+ X+ | - [name] => 哈尔滨市
$ m4 N1 M9 y: B7 Q1 d- M - [son] => Array! T3 y) C! |: x# h1 ~% q
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- [0] => Array
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+ r8 Q$ j* b5 d2 [3 w3 m% ~) v - [id] => 6
8 K5 {% V' F2 B6 A - [pid] => 4! \' B- c* `* v7 i3 B6 d
- [name] => 香坊区; ~. V- |7 K: l8 V; l( S. f
- [son] => Array
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$ }' F4 Z0 t% b - [0] => Array
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- [id] => 8 H: s+ n: {3 e$ _" N, U
- [pid] => 6, h: J! k* \: q5 f$ E# U
- [name] => 和兴路
7 k: ?5 v5 n& B. y - [son] => Array
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- [0] => Array
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- [id] => 10
+ ?* Y( F( c! {/ T1 m: { - [pid] => 86 j% y Q, s6 p* w8 w# K! `7 l) ?
- [name] =>
8 k) m% C7 q+ Y5 g2 b - 东北林业大学
) k- S% n; D7 x+ \# `+ c - ): m8 D' C7 Z) R
-
# H6 D( X1 m- Z' n! _ - [1] => Array1 D8 [! `7 P9 p" D/ Q; |% Z, e
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I$ ]- y# _ `4 H2 P% `% h - [id] => 12
* l" R9 C; E% k - [pid] => 8+ W- n6 ]+ s- \
- [name] => / B/ N& L! T' |8 Q2 N* B2 d. F
- 哈尔滨师范大学
( `1 b: c' ?" V3 L' r/ N6 _5 [ - )4 \* H+ f g- ~) j/ X: I( M1 ^( X$ c
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- (
4 ]# E: x1 D& m' X3 k1 @" x - [id] => 7
* H; _3 I) I6 o7 G - [pid] => 4
. ` V: L3 D9 h& H. Y0 n) V - [name] => 南岗区" X: u1 \9 C; e
- [son] => Array% B/ ~0 ~, j$ m
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7 C( e: `4 o; R8 A/ f. d - [0] => Array
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- [id] => 9
" M2 i, S* C) ^1 { - [pid] => 74 o3 O: W5 b0 ~0 o+ m/ u: l j8 j
- [name] => 西大直街
2 k: L$ S2 F% Q( w4 \, C - [son] => Array
# L& M; S* N" t1 o - (
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* J- @1 I# C; ]! y) C; Z0 b2 G - [id] => 115 g' c) ?4 y& K+ b% m! V2 {
- [pid] => 9. n5 A0 `" ]5 z) b5 P9 h* ]
- [name] =>
k# o, U; D: E3 H+ ~ - 哈尔滨工业大学& m' X: m/ T* q3 n8 `0 U
- )
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- [1] => Array
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0 o& \, Q/ p9 Q$ x$ S0 ` - [id] => 5% G0 L+ m+ ^/ p6 H% H
- [pid] => 2
* E1 q6 d/ Y7 g- C - [name] => 鸡西市
7 ~ h# S! _: V8 a, d8 |, C - )( H1 ]+ L5 i$ Y! H. 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。/ [( H! {! s& N; {' h* [% C
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