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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。& ?# i+ o$ n5 _1 p. j# X
一.数据库设计
) ^1 w9 v: |* p! d- CREATE TABLE `bg_cate` (8 E- J( c5 o( D* ? p
- `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,5 e* N4 }' ^5 o h# @' K: @2 L- |/ Z! g$ y
- `cate_ParentId` int(30) unsigned DEFAULT '0',9 B7 k! U7 t1 p6 G* H3 l
- `cate_Name` varchar(100) NOT NULL,
2 Y5 J8 C- S! B4 m" s - `cate_Intro` varchar(500) DEFAULT NULL,
h' L: x2 S, s& P$ u9 f0 O/ U( N - `cate_Order` int(30) unsigned DEFAULT '0',
) u/ O( ~0 s1 Q1 A - `cate_Icon` varchar(100) DEFAULT NULL,
( z9 R7 J6 g! Q# \5 j - PRIMARY KEY (`cate_Id`)5 a8 U1 N) w" Z8 ^
- ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;
) v4 b+ F" F6 a2 D" K - --
) [1 ?+ Z K' i: V H' ?, |# k - -- 导出表中的数据 `bg_cate`
( a7 S! l2 K$ `2 Q" \ - --
( _7 i t+ h9 j& w' ^4 N- y# v - INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES
$ w j1 [( M' C: n - (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'), h! h3 C# N i& w& H8 k. _
- (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif'),* j8 J# o, F2 ?9 R
- (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'),
2 x8 j+ J( H$ }3 b$ {. { - (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'),
0 h: ~2 J1 J( W7 T3 ^3 k - (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),
2 l0 z3 a) l% @' K4 g$ N8 Z, a - (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),
; L/ X7 F) u6 U5 I0 h - (8, 2, 'html', 'html学习', 0, 'icons/1.gif'),
; v2 s0 F' X* Q7 z - (9, 2, 'css', 'css学习', 0, 'icons/1.gif'),
! H+ v+ W3 {5 [! [/ U9 c - (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),! ^4 S7 [2 C5 g
- (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),
- P& M5 ^: Y# |0 B/ Y( h - (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),
" g9 N! F1 |0 `! X$ ] - (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),% a* l9 g3 V+ e0 m# x) D0 i
- (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif'),5 @" Z5 j7 |: N s+ M+ b
- (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'),
! d4 H: |7 f0 l* }- c. E( u1 P4 V+ Y0 i - (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),3 F- Z! g5 _; I7 o6 H
- (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),
: M5 Y2 q3 V! p% e - (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif'),
1 E7 ^/ |) P7 z4 Z3 M - (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'),
1 [- W: M0 _- [# u - (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif'),6 J2 Q! D) I1 q0 T% I
- (21, 19, '学习', '学习', 0, 'icons/1.gif'),
/ A0 d! \6 c+ n' e8 D - (22, 19, '运动', '运动', 0, 'icons/16.gif'),
+ W) c" O5 F a1 B1 D2 D4 j# e - (23, 19, '旅游', '旅游', 0, 'icons/24.gif'),% `9 u0 e2 W$ ]3 h/ ?8 t6 R
- (24, 22, '排球', '排球', 0, 'icons/9.gif'),
- C+ {& J2 I+ R) L* G7 U - (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),6 a+ h. ]& q+ m$ @. A g8 Y
- (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),# S- [; n2 r( o/ F6 p2 S* 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。
$ y4 j- r) \' ~ L% a- require_once './classes/MyDB.php';9 m3 K" T. g7 q. p0 ~5 O( G9 b, ?
- $con = MyDB::singleton();# ?+ P+ ~6 A+ r% z; T9 f
- $sql = <<<SQL
' h$ W. `4 A( p8 k9 t - select * from bg_cate cate
% g& P* Z7 W" z+ V: l9 u7 `+ ? - SQL;
/ f w3 _1 p/ t! O - $data = $con->getAll($sql);+ Z/ _6 U ^' y
- //print_r($data);
复制代码 数据库操作我用的是pear类库。: ]( a( `) c) s. j' ~ f: x1 i1 t: M
最后的$data的数据格式如下:
; F& M& S: B% ~$ c- Array, Y; t/ k2 h; y2 o) s( O, [) c
- (' f S* _2 m" Q
- [0] => Array
1 M( K3 t, p, f( M- Z; [% q4 b* u - (( F" Z9 t+ K9 c: @
- [cate_Id] => 4/ T7 m; q: l# W1 V: T$ l) |! X
- [cate_ParentId] => 0
( m8 e/ `' d) O9 e1 i$ j5 K. C6 D6 x! ` - [cate_Name] => 往事如风7 V2 u7 n4 u" R& {# U
- [cate_Intro] => 记录往事2 }* |. f5 [+ v4 W4 B) s$ r2 @ d& _
- [cate_Order] => 0
8 i% b) M g( G+ _! } - [cate_Icon] => icons/6.gif
6 y. x2 O/ T6 i3 o: N - ): R. f8 i2 _) O. p
- [1] => Array
: o8 c' }; b" g1 }6 M- j - (
$ @; ?* C5 [ O% M) N( W. N# p$ ] - [cate_Id] => 5: i5 p( N1 t) |- d+ \4 m
- [cate_ParentId] => 0
4 c1 j% u/ N+ W. e; X, g - [cate_Name] => 水煮三国2 _0 y# v" M8 }7 }. Y: Z1 y
- [cate_Intro] => 品位三国智慧$ f& J9 G) w1 q7 r( Z- S
- [cate_Order] => 0
. L) S* b7 K9 p - [cate_Icon] => icons/3.gif
' s3 j0 b: s- V3 f5 \ - )
复制代码 三.把上一步的数据转为树型状的数组
/ b) L% q4 y. G代码如下:. F8 d3 i2 J# G. v
- function getTree($data, $pId)
- O/ }' C) a B. ~ - {
) g( o1 z$ s: T. O3 s/ V - $tree = '';& y1 r$ J0 ]! v/ f+ `( b
- foreach($data as $k => $v)
. I. ^) a* q* [: }- r: M$ r8 O - {8 {/ P \: D9 `! x. d2 S7 I
- if($v['cate_ParentId'] == $pId)
: T' s% N0 i6 [ - { //父亲找到儿子
$ C0 n5 f8 N3 k" r - $v['cate_ParentId'] = getTree($data, $v['cate_Id']);
# Q3 H! F; u T s4 e1 A, @ _: q/ ~ - $tree[] = $v;' e) b8 R9 u) n
- //unset($data[$k]);
4 @; q$ \$ ~4 h W+ @( }1 I4 [3 j+ L - }
% C, e* e; @( T7 J# n8 b0 g - }
5 Q, z/ ]3 d8 K5 ` - return $tree;
( k& o( ]4 p" h& b/ _ - }6 r4 ]1 J0 j+ Q- B! m1 ^- @, H
- $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:: o1 c; M) ?) W6 O
- Array
8 M; \+ e5 b8 _ - (
! \1 W- I8 O6 N- ]" r4 { - [0] => Array
& p5 \% \( ?& b6 B8 y+ | - (
. ?1 [6 l& I0 d5 S - [cate_Id] => 4; L' w: L- U4 r0 }
- [cate_ParentId] =>1 C! l: P+ l2 V+ z
- [cate_Name] => 往事如风
1 Z/ F" y2 M7 c" h2 P# D% `/ [ - [cate_Intro] => 记录往事
8 w6 E* F/ ]# @# X; _$ q - [cate_Order] => 02 m6 [- P' d K, g9 `6 r$ ~% Y; _
- [cate_Icon] => icons/6.gif
" @2 b# N/ a. q, C5 X6 y - )
& r; d k! r5 y - [1] => Array
3 D! k* a# k3 g+ I- c: N, p3 e - (
7 a6 j% S) u" E1 o2 @ - [cate_Id] => 58 ]- z# O. k2 D+ E% P0 c
- [cate_ParentId] =>, E2 a: P$ m( \
- [cate_Name] => 水煮三国
1 D8 l0 K; A9 v: M - [cate_Intro] => 品位三国智慧' J2 h8 l/ r6 c# D7 x
- [cate_Order] => 04 _& O' E$ S' |1 x
- [cate_Icon] => icons/3.gif
, Q+ j; E5 [. N3 q; j8 h - )
+ o( _: E7 I2 M b d7 V - [2] => Array
( {2 u) I2 P( [/ s: f2 Y" x* Y5 I" d - (5 Y8 x4 V7 Q+ X! W
- [cate_Id] => 20 y. n. p( {) v
- [cate_ParentId] => Array
0 {: }* p' @) G. E+ H* q' }0 @ - (8 ]/ \" ~# i+ {2 s6 J1 e+ i) q
- [0] => Array! X% O- n+ o3 M4 y- \2 X/ ]1 N
- (
& P. w; Z/ S @ b% d, t - [cate_Id] => 8
* s7 \1 s. E) }1 {* q1 m% H - [cate_ParentId] =>3 I1 P7 E8 S0 G/ s+ F
- [cate_Name] => html. p8 m' [* J/ [0 d
- [cate_Intro] => html学习
! w7 R3 F0 T& x5 v9 ] - [cate_Order] => 0
7 L9 |# q' ?/ R$ K5 q& ]7 N4 |0 s - [cate_Icon] => icons/1.gif
6 H, v( w/ f K0 F" T* a - )
复制代码 四.把树型状数组转为html! O7 K0 O. \6 l& c" _
代码如下:& U9 a! O0 P3 Q% t& l! T
- function procHtml($tree)
$ j, Y" c/ c# n. G* x. a - {
7 I% ?8 g- J9 t, X. y - $html = '';
* i2 e$ F5 J8 ]1 k! y2 _& X - foreach($tree as $t)) r( B' I5 L4 j$ W
- {
9 L7 Y7 Y6 f7 k$ P& D - if($t['cate_ParentId'] == '')% e& d0 ?3 m3 @8 j; O i
- {4 J. d p1 n+ F& h
- $html .= "<li>{$t['cate_Name']}</li>";! ~7 K5 {) E6 ?- ~& l$ e, O. {
- }; E* U2 m8 D& W+ O1 ^1 C
- else
6 r3 l$ m& h7 `3 i c( S - {
6 _% Q N/ p3 v8 R - $html .= "<li>".$t['cate_Name'];! c& o1 u& f& }
- $html .= procHtml($t['cate_ParentId']);
2 C" }% x) y: o: H9 E. @ - $html = $html."</li>";* I2 x/ j7 ]" v5 H( @% W
- }
6 Z. P- b. B" D' y$ E - }1 V% q( ~9 G- X9 d
- return $html ? '<ul>'.$html.'</ul>' : $html ;% j5 F0 h' v" ?: z$ ]
- }& [, Y! T& n {7 W p0 s& p& O
- echo procHtml($tree);
复制代码 输出的html的代码格式为:- D- R9 ~1 [0 z" d l+ N; U8 |
- <ul>3 w4 V# J3 Z" k& \ Z
- <li>往事如风</li>8 P1 u3 X, S' c- u: P
- <li>水煮三国</li>1 J) |4 c* z6 {3 D! F: s# x. Z
- <li>技术学习
: M# }* E" p& u. G- R, \) ? - <ul>7 c. e9 u0 H* a% `5 p/ Y
- <li>html</li>
' H# }2 V u+ _! F# \ Y# Y* D - <li>css</li>1 J5 w8 | W8 F3 E5 f. T
- <li>php
* s2 T% [4 J2 g) s2 u& O0 i - <ul>
; \9 L4 I% I$ H0 I/ F - <li>php基础知识</li>
! M7 g9 ^" M3 w& c m& s - <li>oop</li>
2 t8 z+ u, j Q - <li>php安全</li>
复制代码 五.代码整合1 N7 D0 P, }- k8 P, e7 a
- function getTree($data, $pId)+ ~5 q& F- q+ c& h9 K, b
- {
1 \' q7 V+ J& r# N3 W7 F5 | - $html = '';" E0 R% U& a/ I9 m. l4 B: b3 s
- foreach($data as $k => $v)
3 n! P. Z* v4 W% `( t - {/ O; M d* y& f( E7 T# w2 `
- if($v['cate_ParentId'] == $pId)
, R$ P( l# o! A - { //父亲找到儿子! H0 h/ c2 a+ t/ G
- $html .= "<li>".$v['cate_Name'];% q3 C0 v3 m1 W4 c f& }: T
- $html .= getTree($data, $v['cate_Id']);* ~( l1 V+ w$ c) q& D
- $html = $html."</li>";
! M. L! J$ e# A6 _+ W; Y" C - }
2 N; K# B' q5 \; s4 T - }
5 d$ ^6 g+ v/ u0 k - return $html ? '<ul>'.$html.'</ul>' : $html ;' E/ v- i6 m9 r2 P! c$ q2 j9 @
- }+ l9 s4 ]& A# K* I! @) @5 D
- echo getTree($data, 0);
复制代码 六.增加CSS样式
9 Q- N) a5 \/ f+ G4 d8 ~6 |4 N
$ \+ `" s _5 M+ q& W6 Q J2 S- [2 B7 l
" p$ U* P3 |8 d6 e第二种是从开源网站上看到的,非常非常的简介。$ o9 x( t; o* E$ T3 y
- <?php
3 D+ |: T4 M/ _: C5 C# n6 F+ B - . _- I6 ^3 ^; D" ]) b" C' f
- function genTree5($items) { % P; c, e- @8 p& y
- foreach ($items as $item)
1 F) e ?! ~4 C$ L( B - $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']];
$ A5 l+ s" o6 O$ g- } - return isset($items[0]['son']) ? $items[0]['son'] : array();
+ ]4 H3 l- e+ f, C4 O4 \ - }
1 \ \$ A5 x( a$ Q" F -
* l4 Q: ~$ c2 C - /**) v! Z# z" |# P3 } s
- * 将数据格式化成树形结构5 d) [1 s( w8 b
- * @author Xuefen.Tong! i) Y$ Q. m7 \+ C2 y
- * @param array $items) ]$ q* c1 R. D
- * @return array 3 c/ e( B) Y" O. M$ z& p
- */
9 k$ {: z, _) s- L7 }# U/ P6 r# S - function genTree9($items) {
$ v) x3 A8 N2 B, a3 V+ T - $tree = array(); //格式化好的树: y* f$ V9 u$ L- M' h
- foreach ($items as $item)* E" f7 t! X8 {6 a' k i/ T+ e
- if (isset($items[$item['pid']]))
8 P" A# \+ V/ N- H: B - $items[$item['pid']]['son'][] = &$items[$item['id']];
- j0 q+ d- P M. J) j4 Z - else
+ ~' j# ], m5 V V - $tree[] = &$items[$item['id']];. |4 Z$ _% {0 Q- d2 m
- return $tree;0 s! f; V9 q9 }# F7 F# [7 a/ \2 ?
- }
: x( M" G. T9 S, ^& Y: N - : m8 `8 u @1 C# b
- $items = array() l; X$ i) A+ u. N+ @+ A
- 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),
; C! r1 ?$ r7 ?8 A x- Z - 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),
. ~, R, {- }0 W# C0 r" } - 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),. V4 s' d3 A8 y2 {( F2 M3 |
- 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'),
' ]9 C s1 W1 C$ X. S9 _ - 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市'),4 n* S2 p' J. L+ z
- 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'),
& P; @4 R4 _ v! A& }1 _7 B0 ~ - 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'),! D& }; k% T$ k+ r
- 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'),
2 X0 J& N! Z3 e' L% H - 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),, t! N0 r3 X9 V' P" x+ ]. q) d
- 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),
4 S/ \3 c7 n' u$ u/ f - 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),* L; n9 {8 e7 H6 U' d7 H" e
- 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学'),
: w9 x- O' F& l9 u. M/ r3 Q( g) S$ U - 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市'),
6 C3 [( a7 P5 {5 \" D - 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'),% J# \* E5 q7 m/ P x7 K9 ?) o
- 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县'),+ P( P! c! y& T, g, y3 z
- 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),
! s: c* F0 Z+ I4 M6 C# s+ K - 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),, K# ~& F G7 C/ j4 F" W, Z& E
- 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村')," Y9 I3 p+ D; n- T- P
- 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村'),
5 @8 }4 [9 m+ n2 L$ U* j. U - );
* {8 x* Q F |/ C- ? - echo "<pre>";
# q+ E1 R' V0 V - print_r(genTree5($items));; T9 ~+ {' ~2 f& f& r0 [
- print_r(genTree9($items));
) c5 I) I; c4 B& h8 o' {& b5 V - 2 y" f! d" M7 L& w8 s0 B
- //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
$ M Q& ^- U, T+ Y$ ?7 P - /* R _7 `- V6 ?$ G, F( k* B; a- D
- Array
: F0 i4 K( r+ J - (+ v( d1 l4 {- b. `# w: E
- [0] => Array7 U$ i+ U4 L" W' S K3 t
- (
, K0 \! {4 {1 D, W7 A - [id] => 1
1 K1 k9 k: e. a - [pid] => 0
; r0 z1 ~5 a; z9 d" g5 D. h) n - [name] => 江西省% A. J! T, J P3 y* N
- [son] => Array
! ~0 `( R5 p# j2 w+ d" [ - (& V Q$ ?3 {0 N8 L
- [0] => Array
7 i& I7 ~! N( {2 a, r8 ~+ i - ( d8 p0 g7 O8 Q: t" g C/ c
- [id] => 32 U- [9 b$ ]& [
- [pid] => 1 O' N& r7 r% ]" S$ R2 C
- [name] => 南昌市- c8 l$ O" i9 h# h
- )
/ v; m V" v9 ^- F -
7 f( m2 q# Y: S* ~! t. S( ]: z- b - [1] => Array
2 F3 h* q2 k* D - (
- d- t5 E$ p$ y2 \9 W - [id] => 13
& l* R- C8 K) }- e; a2 b - [pid] => 12 i& M2 m' h7 m. g! S
- [name] => 赣州市/ s& ~ Z8 k% x6 D0 k4 ^* z4 d1 _9 j
- [son] => Array" M5 g) ]- U$ F) m I5 F/ X
- (7 T8 } l. g, B6 B
- [0] => Array
+ Y+ s: H" c+ ]; F' h - (2 C- P+ f: V/ b$ t! B5 ~
- [id] => 14
|1 Z0 H; J2 i0 ^. s - [pid] => 13& k% Z* `4 h$ x \2 b
- [name] => 赣县/ ]. P' f K R8 y c' Z5 P: s2 @* T
- [son] => Array) Y" [! q2 y- o* _( U
- (
P( l2 o4 w- _" l: q' T7 X k - [0] => Array0 Z4 l N5 X0 P6 M& y& U: h
- (' l4 g6 ]" M, l5 X2 m/ A( h8 X
- [id] => 16
- V! l# \( k `$ M; M( d/ ^1 p - [pid] => 14# m& l- G: K& `5 L( d) P& @. q
- [name] => 茅店镇4 P; [3 ^4 S* w5 T/ X0 g& S% |
- [son] => Array) w1 i2 w5 B7 o c# C
- (
8 e: G E. J+ C/ l9 C6 f/ V$ L+ ? - [0] => Array# p1 Q$ g' Q& U- n M2 N
- (, ^) U4 m, I! \4 f- q
- [id] => 18
2 y! s: r+ y6 g1 b& N - [pid] => 16
2 s/ @; K* I# t+ |8 f - [name] => 义源村/ K5 p, N/ t" F% n/ ^
- )
9 e! r N; k7 g# B& m& R) j - $ M" j1 h( A: }) e/ H H
- [1] => Array2 O' H6 K* b! Z5 ]9 C1 l7 L _1 P- u
- (
/ \ ~1 x( k6 ~8 l& X6 z1 X0 w! q - [id] => 19
. @2 j7 L$ b1 Z9 V9 o# S - [pid] => 16
" i. N# O- g$ E( n - [name] => 上坝村
9 m0 ^2 A0 w" a; P4 ?2 O( z - )" Z! K8 P; k& k. `! W5 _- [
- 3 t! M; I% n- g: B6 w' }4 W1 o) f
- ) |( ~: T0 b' W; N( k2 W
- ( t+ Z u6 Z! \. c
- )
1 G4 L2 }6 Q" O8 {% w - 3 ]" C2 e9 t8 {7 D
- [1] => Array
& g8 M( A! ]' ~' F8 \3 T - () {! n: R7 i* {: V; M7 D) k
- [id] => 17
& N6 \% m* e* p6 `0 ]1 C - [pid] => 14# \' n, w) a( h7 P4 V6 K
- [name] => 大田乡+ {) p6 s. [0 C1 m
- )
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-
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- [1] => Array
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& p% I3 k- _9 j( @3 L - [id] => 15- Z3 c j- ?, F& m8 n+ A. T
- [pid] => 13& X% q* Y0 s6 m% q: ?
- [name] => 于都县
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-
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- [1] => Array0 p1 A1 G7 L7 X7 t6 {! L
- (
5 }/ G; p9 c7 R' ~9 y2 e - [id] => 21 o4 W! r# B: \/ i5 L- M+ z) m: s6 l
- [pid] => 02 U# A" {. E$ t. G/ [0 {1 J. i6 j; U
- [name] => 黑龙江省 D8 g. w" r+ e+ o/ y; l
- [son] => Array
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q2 R, C% Q8 X) {, `5 W; G - [0] => Array% e+ A# o4 {5 G0 X. z- } o6 |
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: r* U. n; J: P3 q2 c - [id] => 4
8 i8 `4 ]1 S8 C2 [/ k1 w5 x. l$ c - [pid] => 23 `, l9 U+ r( P6 f: q2 d
- [name] => 哈尔滨市& Z, V, u" {4 _( `7 b9 [; w# Y: |
- [son] => Array A" J' D+ H2 l s& u$ ~2 v
- (7 y% w1 K% M) Y5 n2 \9 F
- [0] => Array
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- [id] => 6
# u7 }4 n3 F0 K$ W5 X L& Z+ t - [pid] => 4% X) D# ~' n$ V8 J: p! i
- [name] => 香坊区; A! @1 `1 Q E& e% B
- [son] => Array& `0 S& N, J+ L. ^$ j4 W& l8 o
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- [0] => Array
6 p; m7 K- n; K# T - (, x5 d% T A' D& B
- [id] => 8& o; F/ g% ~7 s& d [4 E! G; y; T
- [pid] => 6. d- A* o$ l6 e7 l f; P- |5 G
- [name] => 和兴路3 q- [. ]( u i5 z* |
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- (% }( V6 `- s- [3 X7 n; D2 E
- [0] => Array. ]1 Q2 O- _3 ^; T7 H7 V& q- n
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& i6 I8 v8 A+ {# ]! i& g& Y - [id] => 10
6 P) i/ q5 V* l& M' A7 m - [pid] => 8
y; I: T2 O9 s" d# a* v- P - [name] => , c8 H3 u: ?4 {. O, X5 }6 B
- 东北林业大学
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- [1] => Array
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) K5 v- q5 p3 H' L2 ]0 e" \ - [id] => 12
4 X1 H6 h0 [9 @ - [pid] => 8* \% s. u8 v2 b% u+ T) ^ L
- [name] => 5 i; ] R0 ^6 l4 y, H
- 哈尔滨师范大学' l8 Z5 F7 G1 z) o3 {) e4 \
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-
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- [1] => Array
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2 K A! u; C+ r6 f& I - [id] => 7( |1 o7 X. @4 q t/ ?5 @! B
- [pid] => 4
, [# \" U4 w: h+ `$ m/ c - [name] => 南岗区$ X6 |7 M, s0 r2 f2 o; {
- [son] => Array
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- [0] => Array
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- [id] => 91 G0 n5 L6 s) R. C
- [pid] => 7
% w% D2 \- Q1 c/ D" H - [name] => 西大直街
& ]# X+ c. W# ~8 f: p. o' F - [son] => Array& H7 X3 ^7 g ^* \# e/ J; X$ y) a* L
- (5 Y+ G6 b8 D! z/ d
- [0] => Array8 g* v" m: D) N
- (. f2 N* Y5 t& M
- [id] => 11 w) g Y4 d9 y: M2 e) X
- [pid] => 96 @# K4 g9 Q' _+ U. o
- [name] =>
: G9 q( D; s6 q5 { ]! c - 哈尔滨工业大学
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- (
+ S; y- T# ?) S: I2 U5 \ - [id] => 56 Q" a+ [' C- g; ` l! ~
- [pid] => 2
8 n: J" V# T( |6 I2 Q( O) R - [name] => 鸡西市' r* Q' U, T3 `3 ?$ e O: f
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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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