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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。
( s( M# H$ I$ I, K4 A一.数据库设计+ H' ]+ R `- P( h0 E0 {, [/ e# s
- CREATE TABLE `bg_cate` (
, r4 D: n" r' }( x - `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,6 y. ?. p' } v. N3 ?5 B
- `cate_ParentId` int(30) unsigned DEFAULT '0',. n7 v9 K2 S: E% m- Q
- `cate_Name` varchar(100) NOT NULL,
) y* X5 |& r0 Q# B0 c: V - `cate_Intro` varchar(500) DEFAULT NULL,
8 u# w8 n- @% `# X) Q- C - `cate_Order` int(30) unsigned DEFAULT '0',
- h) C: `% l: [' s$ @9 w* S. f - `cate_Icon` varchar(100) DEFAULT NULL,% N3 k: n& ]6 O+ q
- PRIMARY KEY (`cate_Id`)
. K1 l) G9 j3 i p" l2 O - ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;" d4 d- v/ `" t9 Q9 @
- --
2 E# a, o" e9 V2 d2 d - -- 导出表中的数据 `bg_cate`
5 |9 z" E( a" m8 q% ]+ w9 ` - --; Q: z% Z' B3 U# \: [
- INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES
# j4 d' r9 f ~( W - (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'),5 e. I' ]% J" d* [
- (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif'),
# o5 P1 M; T) f: j& f7 ^1 ^ - (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 _ a7 [- M/ J/ r: S( |
- (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'),5 y; n2 z% `3 h' Y7 l- t
- (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),$ D! J0 K6 Q1 @0 d
- (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),4 V! N8 y9 e+ U3 ?: Q5 T2 ~7 O
- (8, 2, 'html', 'html学习', 0, 'icons/1.gif'),' ^; R$ i1 D: P: ]$ n( S$ |
- (9, 2, 'css', 'css学习', 0, 'icons/1.gif'),. A+ b9 u+ {, e: s D
- (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),4 {0 h8 b8 q V5 x; r& {- {
- (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),( \, j) j. V* g# C4 l, ]- L
- (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),4 E+ X# P- y* e1 J& l3 L
- (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),
/ _, ]3 q2 K6 t* ` - (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif'),
3 P( B e2 H6 ^ - (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'),( d6 Z/ @, p/ f5 ?/ H( A2 S
- (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),6 P) k( `# L7 W/ u! ~
- (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),0 k6 o( }0 U: {' T2 o# i, z
- (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif'),& d0 U: g) E% H( U- s
- (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'),
' J6 e8 d( H$ F& x( H - (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif'),* m( x4 Z* Z1 I' Y; A& z
- (21, 19, '学习', '学习', 0, 'icons/1.gif'),
) h7 G t: y, \" \: q - (22, 19, '运动', '运动', 0, 'icons/16.gif'),
/ F& h- C5 e# t, e- d - (23, 19, '旅游', '旅游', 0, 'icons/24.gif'),
9 h% I) j" y2 p2 ^( t3 @ - (24, 22, '排球', '排球', 0, 'icons/9.gif'),1 B0 e8 _' @* H6 C) j
- (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),* b6 {5 f% m0 j/ E1 u7 w
- (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),% i+ w. {- L& v) [3 X; x
- (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。
# \* C6 F6 G; ^" I4 Y) }/ h* ]- require_once './classes/MyDB.php';
9 C' Q/ z! e; n" I6 L) t! ` - $con = MyDB::singleton();
( W/ `8 }6 b) F. M s+ f - $sql = <<<SQL+ u/ l# ^3 p/ @5 Y- A3 d
- select * from bg_cate cate3 u% B+ Y$ c0 E1 Z" V, X. u3 j
- SQL;
4 T0 x! y$ e( ^' e4 ~4 t* f - $data = $con->getAll($sql);) H! y' z1 j" v4 e
- //print_r($data);
复制代码 数据库操作我用的是pear类库。$ U" O4 p R \3 H
最后的$data的数据格式如下:
( t& h: H* k0 { r+ ~4 _- Array
# H1 ^# r( K2 L( L3 H - (. X: c/ w- { I
- [0] => Array
% `' w4 { l7 |7 Y& N6 [ - (
. A- z7 P! @5 ]9 N7 B - [cate_Id] => 4
' s- a) u! K' E5 j2 |# M - [cate_ParentId] => 0
, l1 U# e6 n9 a" x. A - [cate_Name] => 往事如风: N6 }0 C' ]/ v( V
- [cate_Intro] => 记录往事
* a O, i, k! h; x" P8 P# c - [cate_Order] => 0$ `! U/ f# Z( ~" l O( O
- [cate_Icon] => icons/6.gif* r4 E8 N, `) T
- )
' R) ^# Z. s* b% I8 q3 |8 L - [1] => Array
/ F9 `& L! z. m4 D - (
. w8 G: z6 m: q9 Q+ |6 n: P - [cate_Id] => 5
7 t, j2 |) z* H9 h - [cate_ParentId] => 0
& c* `2 y: b3 H. G - [cate_Name] => 水煮三国* e9 s6 @2 g7 C! k/ R$ y
- [cate_Intro] => 品位三国智慧
4 o+ h5 H; V w% O% A6 h - [cate_Order] => 0- f: D- H/ u7 D/ H: b
- [cate_Icon] => icons/3.gif8 F+ z9 [2 G+ y% ?: V
- )
复制代码 三.把上一步的数据转为树型状的数组
+ K7 _- A' c0 {, D* ]代码如下:
2 F$ B! V3 p% _; K# h8 z& V2 T- function getTree($data, $pId)
: j& ^8 g( T. W1 ?5 b - {& x; l7 F: S+ v4 u( g
- $tree = '';
0 p) T+ O/ J- Y* g - foreach($data as $k => $v)
2 n$ p6 E+ n& B: ~4 B/ K - {& m) @$ ?9 ^( |* ^
- if($v['cate_ParentId'] == $pId)
6 ]0 G( ]$ c( J+ I/ Z - { //父亲找到儿子
& g' S, ~0 C0 x+ P1 J - $v['cate_ParentId'] = getTree($data, $v['cate_Id']);0 ~& K0 ~0 m9 J% D
- $tree[] = $v;
3 o* W0 e, Y2 l& M+ R" D - //unset($data[$k]);
0 g M. W$ g2 w" I4 j O' Q - }
+ I/ [" C; h6 W9 z; }( M - }/ @/ C8 f; G' ? \# o
- return $tree;
, [+ M3 ]9 Y+ x1 B9 e - }" y" P$ E- S& P: d# X4 T
- $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:: |, u5 u3 U) B: O) I4 V p7 u8 W: u
- Array- D& k/ m9 \, o0 X; `- \
- (3 e1 V' ^" v0 Z" t! Y) O+ q
- [0] => Array( _0 i4 x( H4 N
- (
# g; D4 b8 R+ V( r7 s" a1 w# I8 ] - [cate_Id] => 4" y6 N! ?3 q) ]/ T. {2 I$ d
- [cate_ParentId] =>8 q! ~, K4 S( U0 R
- [cate_Name] => 往事如风
6 F. c, M9 x+ d. D; l5 \7 J - [cate_Intro] => 记录往事
" T& Q' i% B# |8 T3 R9 | - [cate_Order] => 0
7 X+ W+ S6 d$ f6 |; t - [cate_Icon] => icons/6.gif
' S0 D' n k) Z: H8 y9 \ - )
, h" t9 U) W u- i$ ]/ v - [1] => Array/ C4 \$ t/ u. ~2 m0 O! f) n
- (
. H- u- O( [+ \( S- C C - [cate_Id] => 5) m; z! @6 ]( J, Q. T2 E0 @
- [cate_ParentId] =>/ h* b$ G3 R& j: U
- [cate_Name] => 水煮三国
; C& C% a6 y& }2 g6 d: ^2 P" A - [cate_Intro] => 品位三国智慧
0 I0 z/ F" V% ] - [cate_Order] => 0
# o, c4 ~% B9 A% l - [cate_Icon] => icons/3.gif6 R7 e: a$ ?- r8 H
- )
: F: a7 p& M" _/ ~, _ - [2] => Array8 G8 G8 M8 Q) m* b. J, K3 c" z
- (
( ] ?. l6 w. _; ]" y5 e - [cate_Id] => 2$ e1 _! C5 P% j$ W
- [cate_ParentId] => Array
9 D& W: C9 c/ i5 k. J5 i) ]; ~ - (2 M4 Y1 W5 P( \$ m. ^
- [0] => Array/ e% ? _" [! a: J
- (
3 z, Z" e c* k& H7 U1 V! k - [cate_Id] => 8
) ?7 B# _6 H" \* w - [cate_ParentId] =>% j) A7 z! u, i: {- Q/ s" ~7 _
- [cate_Name] => html
* t C6 O$ r2 D s6 J. m( W - [cate_Intro] => html学习3 B; s6 y" g& l3 ?
- [cate_Order] => 06 ^# B# Q0 Z2 u- s& m2 T
- [cate_Icon] => icons/1.gif& U5 C7 n6 ~4 i
- )
复制代码 四.把树型状数组转为html' Y! i2 ]% X: v$ d3 ^ H* Z
代码如下:# S3 O" J1 O7 u% _# |) T
- function procHtml($tree)0 G- O2 B4 @7 W3 N
- {
+ ~ J) H: q2 a# ]3 J% v - $html = '';
, c. J" O s+ f$ Y! D+ J/ H/ a - foreach($tree as $t)+ m& Z( b& \; v) v% j$ Q
- {
% ^# d* {" S Q1 W - if($t['cate_ParentId'] == '')" K" c/ G- i0 h( R7 H7 r, K! P$ V
- {- V8 k) q; _' s' V ?
- $html .= "<li>{$t['cate_Name']}</li>";
0 l9 O( m, h0 q& W, K - }" ?# J- ~- m0 }
- else0 J7 j8 J' h5 g+ y/ i
- {
3 z: B- \! d5 T- ~3 D7 f7 } - $html .= "<li>".$t['cate_Name'];
8 r c* N9 s: W - $html .= procHtml($t['cate_ParentId']);& m% R1 n! V2 o
- $html = $html."</li>";
! i- [( J# O5 r5 }% ?9 O6 ?- h - }0 w1 Z: \* {/ s1 ~
- }
! i C" J! A0 H* k: E6 z - return $html ? '<ul>'.$html.'</ul>' : $html ;
/ z% V9 p! u. b6 l- Z9 t - }4 v2 ` y# Q, S7 y8 `+ ]
- echo procHtml($tree);
复制代码 输出的html的代码格式为:
* i4 b0 [' L* i5 p8 L' @% c6 q4 p- <ul>
: A4 r) S$ s$ f9 @" E- C2 L - <li>往事如风</li>3 j6 o2 s( y$ l2 T( ]6 \
- <li>水煮三国</li> F& h7 ?, N# V' W, w" c; I
- <li>技术学习9 R6 Q7 o6 x# y- j& k- g& E
- <ul># t7 b" g2 H- F( U9 t/ b9 Y
- <li>html</li>7 _2 K8 S( l3 e0 C6 K. x
- <li>css</li>
' Y8 _* `0 P6 r - <li>php
5 ]4 _5 o9 }4 H, [$ f - <ul>
0 B9 o9 @5 Q8 @9 Y0 Y5 S, i+ N - <li>php基础知识</li>) s) _6 n l3 E k* ^8 W/ R' L
- <li>oop</li>3 A! b$ c/ p" z7 I. X5 w" F
- <li>php安全</li>
复制代码 五.代码整合6 O8 b$ J& \& J/ N. Q1 F
- function getTree($data, $pId)
% \, g; z* W; I/ ^0 `7 s$ ] - {% _8 b: V k' O% _' x" H3 U0 `) D
- $html = '';$ ]6 O, p o4 k3 o2 l8 V1 @/ s( F: G
- foreach($data as $k => $v)
: U$ O8 _" @3 \' U" H - {
6 ~: ^* k2 W7 Y4 A- Y2 \6 C/ q - if($v['cate_ParentId'] == $pId)
- |' p; j: l7 c T6 y& m9 A! E - { //父亲找到儿子$ ^! o( a1 x6 @
- $html .= "<li>".$v['cate_Name'];
6 M: }% E1 ~, w% T9 N - $html .= getTree($data, $v['cate_Id']);
9 Z# F( I, }$ p. m - $html = $html."</li>";1 A, |2 c2 H+ L- b5 [+ x. i4 z8 @
- }1 b* ?. G, y+ X" y! k# u+ B
- }1 b7 X, q7 I% W& J( I% ~5 m
- return $html ? '<ul>'.$html.'</ul>' : $html ;+ M4 c3 t) r: Q* M5 {) |+ |
- }8 i9 m; N* ]- Q$ x/ p$ {
- echo getTree($data, 0);
复制代码 六.增加CSS样式
0 f( X$ u9 }& }5 ~# i6 ]& R1 e
6 q+ ^8 u" F1 m( \ v$ c- p. q" o6 T! H% g3 }4 @) O, F
第二种是从开源网站上看到的,非常非常的简介。
* v6 t9 N0 G! r8 X- a2 h/ n' F* h- <?php! P7 e& F0 P% p1 j
- ) L, C7 v, N$ W! D/ A6 i1 E: h) @
- function genTree5($items) { 3 T+ s- E+ @+ h# r3 z2 ~) z, W
- foreach ($items as $item) 0 _. X6 r/ W. m' c% V# N O( t
- $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']];
9 W* Y4 {( n( h9 R" C - return isset($items[0]['son']) ? $items[0]['son'] : array();
p" q7 b$ H4 p% q, ]! ]/ } - }
: V: Y- {" {2 [9 q - / n8 m* u+ x% Z! j2 U
- /**
_7 g2 p" n/ y. i$ g! ? - * 将数据格式化成树形结构
0 F' I$ [3 v. Y3 e8 P z - * @author Xuefen.Tong% m7 _# F; l' h4 }( _% y
- * @param array $items
2 D0 w/ m& C3 @6 @5 n - * @return array 6 R/ x" ?/ O; i' j/ @2 s
- */
1 K; r3 n. a9 f/ C W# Z. J3 @; L - function genTree9($items) {
2 r9 X4 c; ?) c7 `0 V1 L7 w! r" b - $tree = array(); //格式化好的树3 g8 f) s& i* d" k! |
- foreach ($items as $item)
4 E& ~/ J0 r# y. b: e - if (isset($items[$item['pid']]))7 u x* a8 D+ ~: B7 c+ ]* l
- $items[$item['pid']]['son'][] = &$items[$item['id']];
6 w4 y2 c, U% p; \) S - else
6 |' y& G5 w0 T) f% {2 D - $tree[] = &$items[$item['id']];
% a* J5 l) S# u, I, J7 @& s+ O1 N - return $tree;
0 A: J: L# \# }1 F9 z, B* A: J - }
1 _+ v) ^( i5 ^6 ~. @0 Q. E/ G' q -
' A, q! {# M1 E - $items = array(1 z# ]5 G# e: K- O: y
- 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),: z3 w. g* _; Z! H" d6 m
- 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),
2 b7 c# J5 v% ]' U$ O, R - 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),3 N, u4 A& \1 T: y
- 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'),% X4 W4 x6 M* R: q* W
- 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市'),6 l, H* `1 v$ f% P
- 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'),* [/ p5 \& p8 r; ~
- 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'),
. h( Z) h# O1 @6 _5 n - 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'),
: x( N; c4 D' n0 A9 K) q - 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),7 n4 X5 x- w m( o- E
- 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),
- \, T& {" l1 G+ f1 o$ ~ c; t: c - 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),2 u. W' V; k3 E0 X. W. J: |( x# l; Z, m
- 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学'),
1 H* W; Q1 C& i- C" o# l - 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市'),
, S }( n9 i. F9 x# w2 s - 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'),4 Q$ [2 ?" L( @; e% t& _, f( ^, Q
- 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县'),
6 e3 x* a$ G; R8 j+ b" {7 W- c/ y - 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),# H. Z: |9 L }
- 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),5 ^0 [# b# O2 Z {' P4 Y# }# G7 v) w
- 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村'),
- g1 u+ v( K6 e7 ^ - 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村'),
" h; F: G7 x5 w) T: F+ U2 e - );
0 F" B$ [3 E& X' V - echo "<pre>";
2 g) Q% T* ^, ~ - print_r(genTree5($items));/ y' u% L4 r1 r' ^( v: b8 g3 k
- print_r(genTree9($items));
9 H p8 d( v1 z& U1 y -
) v5 M, v% Z: i( Z7 [8 }" a - //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
4 F: x1 f7 a# Y/ n9 e% A5 p - /*0 S& X6 K9 E K6 d- ]" f
- Array( ?/ \, n* `8 U# L! [
- (" j! ?! r* c4 g+ L, \
- [0] => Array2 m4 s! w1 u& K: {- S# B; d
- (
# u( T$ B: u* }$ l4 D, G) u - [id] => 1; [! { }) X! M% E
- [pid] => 0
* a" |& p# c# b1 \& C - [name] => 江西省
/ Y& S/ l2 c! o5 h+ f - [son] => Array
! @6 v( o& z8 U _ - (
\7 i: |: {) g6 G9 s - [0] => Array
" Q3 p& P( ~3 J; I7 ~ - (
$ f2 Q) V1 ]/ B* q) O - [id] => 3
/ z$ U% B, s ?; L- R - [pid] => 13 O; g% l2 s! \* Z5 h8 z+ ]& }1 R
- [name] => 南昌市; U7 |" h' u% K
- )" D+ V$ G0 P; T0 m5 z) t
- X. A$ [5 B* `) T- F, x
- [1] => Array# V, R3 N9 |8 n' ?- |. E% y
- () P) D8 D4 _5 u- M6 ]7 y! m- \; i
- [id] => 13
9 W% U- `; Q6 o/ X - [pid] => 10 c5 {% P5 j1 K9 h; a
- [name] => 赣州市
/ l, H3 w9 I f% ^$ S2 e, v - [son] => Array3 ]( M( t; z P
- (2 B' y4 j- i: S* X) O/ u
- [0] => Array
8 v. T% r6 g4 i% Q( C/ b - (8 {: T% A7 z5 m" n7 o% V
- [id] => 14& Y7 x2 |( x8 P$ A
- [pid] => 13 g5 T3 S$ U: f" [
- [name] => 赣县
J( S+ z0 e7 d2 M1 i+ S& r - [son] => Array: B# D3 W: F3 d
- (6 v- {1 F$ P- A" r- L" s; v, X
- [0] => Array& n; O2 ?3 R9 q2 H5 i: m0 y
- (
3 e; b( v! v& z1 F7 O# E - [id] => 16
& E# W5 t$ p0 z& J, x - [pid] => 14
# V4 X9 L4 D6 L - [name] => 茅店镇
; g% y4 U/ L* _7 ^) r/ P - [son] => Array
$ y: a' f2 y5 Q; ^, g8 | - (
5 |$ ]; \* O: x8 Q: ^5 e - [0] => Array
1 C$ T' t1 R# c - (: A( c* M' d: \4 g
- [id] => 18
# F; w4 ]$ N* T: t9 f* s - [pid] => 16
1 @: ]& _7 I9 d* b. R) [ - [name] => 义源村& `, z7 q3 O7 U$ I4 [
- )( u) F4 C% v8 v6 F0 a
- 7 Q& i" A- k, Z: i* Z$ T
- [1] => Array3 o- L: S2 [3 }7 @4 `: {
- (
; {& C7 B6 P" Q6 l' B9 I/ f+ K - [id] => 19
! O, l% |' ?. R9 Z/ ~$ R$ n* _ - [pid] => 16
/ F0 U: t0 I3 x7 ^, J+ y2 H0 _ - [name] => 上坝村5 H% q' ]! {3 z" T: k
- )9 ]8 j+ p" M) _% o2 E2 L, m% F. B
-
& r2 y7 U$ L, v" e/ T2 J" q" l4 Q - )1 [+ Q3 O! V z, h! c8 L
-
0 c# }: F/ @* r" R - )
# i# i5 j8 f9 N# K% k - / S" }1 Y* u/ r( H: p) S
- [1] => Array
3 `6 y5 p8 T5 C5 ^5 {+ c) X$ v - (
* J: [, o: r! w; u" ] - [id] => 17$ b0 D3 T/ O, F" I
- [pid] => 145 \% o o' p! {8 Q, ?
- [name] => 大田乡0 ?5 \: A/ e* T5 m7 z2 j/ x
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- [id] => 15. E z( y3 t) U) K2 n& c
- [pid] => 135 l* w2 F4 t1 H! N1 m
- [name] => 于都县1 B4 r! w2 S f# H
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2 Z- _" l9 v) m/ x+ @. X k - [id] => 2
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- [name] => 黑龙江省
9 C- W& I, x% b* E - [son] => Array
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- [0] => Array4 Y0 e0 ?+ W( S x# |1 S
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- [id] => 4
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2 h$ ^% ?7 A$ J8 l) v9 U - [name] => 哈尔滨市
9 v& d s+ t) z3 G/ }5 b - [son] => Array
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7 C- _! K. L0 M( C {4 s - [pid] => 4
1 Q* [0 \# o5 u5 X1 p0 [5 T - [name] => 香坊区
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- [0] => Array
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; q- Z2 p+ ~$ c. T; J: x - [pid] => 6' s# T# B4 z4 P0 o$ D
- [name] => 和兴路# F( X6 S! I1 Y! N9 k
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0 \/ ^4 `% F2 _2 g/ f - [id] => 107 h# J% @/ N# s3 t# o( f& p C
- [pid] => 80 e8 T) Q5 o5 S0 J
- [name] =>
T0 \5 d" B0 l% E% J - 东北林业大学! `. \* K9 k; O
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- [id] => 12" a! y. F$ m' F3 w& ]$ I! n5 U! a
- [pid] => 86 x1 d E& m9 v# u+ r- \& m% u
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- 哈尔滨师范大学2 r \7 u% o6 N( i! A5 y" u+ j Y
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1 D5 n$ d) }% @# t I - [id] => 7( }5 s: v* _# I) r
- [pid] => 4
1 M0 W& M# a' E) ~, C+ T3 i+ B - [name] => 南岗区" y Z! q- o2 u6 v( n$ h
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- [pid] => 7
6 S3 v( W& w; `: I& q - [name] => 西大直街# `3 S2 w, k+ y5 T
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- [id] => 115 `$ M" ~5 M) j, Q7 E3 }
- [pid] => 9
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. m8 |" P v K! ~ - 哈尔滨工业大学0 T; E9 F8 I6 b
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- [id] => 5$ x* L2 F- h/ p$ Z( D; U
- [pid] => 2
& M4 R7 c+ p1 L$ a, V& i - [name] => 鸡西市1 a4 C% b) w2 P! i1 l+ k! Q
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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。) t$ F7 T, x" F% q3 {# i2 K+ o- W
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