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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。( { V {2 K/ M0 c' Y0 E
一.数据库设计: b' F7 H: ]% H u- e1 f/ U- L% Z$ R
- CREATE TABLE `bg_cate` (1 a) z; i. m' O; g
- `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,
$ [9 z C k- D( ~: R - `cate_ParentId` int(30) unsigned DEFAULT '0',
2 Z6 i- g( Y; Z& A - `cate_Name` varchar(100) NOT NULL,
6 F$ y" {- J; U: F* r! p - `cate_Intro` varchar(500) DEFAULT NULL,
t* p1 j7 l0 I5 f+ Q' \! k - `cate_Order` int(30) unsigned DEFAULT '0',
' ?* f" _( x- ^8 c - `cate_Icon` varchar(100) DEFAULT NULL,7 G4 N& O. c, @" z
- PRIMARY KEY (`cate_Id`)
" i$ w4 @" r& i+ ^1 x& S4 F: e - ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;
' X3 W" f$ o0 @' E2 ]: y5 N - --9 v1 w/ X4 L0 P1 G+ \1 \
- -- 导出表中的数据 `bg_cate`' e, u) P( g" K7 o
- --
* a6 Q1 P6 v! C4 V - INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES
" W% j8 e8 O: j, W - (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'),) {4 y9 t1 d3 `# \% z# L3 g
- (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif'),6 E! f7 e" @; Q% F
- (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 C* ~$ H# k6 R8 R% ]! r, n/ E4 X! f2 K - (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'),
/ y) Q; a! e% _, c4 ~" t) v5 D - (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),
4 Z6 f+ P8 J! _& N* e, N# \5 F; T - (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),: \# A- j' j- I/ p! m; F
- (8, 2, 'html', 'html学习', 0, 'icons/1.gif'),) b _$ v4 Z! x+ l+ N! ]
- (9, 2, 'css', 'css学习', 0, 'icons/1.gif'),
% H( r- k/ ?0 V' |3 i% `( B) D - (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),, p% x4 l! {1 Z" s- @$ n8 C6 J9 w
- (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),
7 _; P" l) C+ E- g- x! t - (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),1 j3 z2 u6 }3 w- R
- (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),+ z+ u5 p+ ^) n' v9 p
- (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif')," G. j3 S( }! m q: y- B
- (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'),7 C$ t2 U. |5 C( V
- (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),+ y2 [% P: ]$ a2 k
- (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),
' n% k: ~( l! f9 G) j4 g3 l - (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif'),
3 P! t, i6 p3 ~+ u9 Y - (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'),
* K4 y( i, f6 r, V" Z K8 J - (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif'),
) x2 Z$ M0 @/ Q: o# A$ u8 L3 Y - (21, 19, '学习', '学习', 0, 'icons/1.gif'),7 O. X/ ?9 x. o( X9 ]
- (22, 19, '运动', '运动', 0, 'icons/16.gif'),
1 w0 J8 i) t# l. z! H - (23, 19, '旅游', '旅游', 0, 'icons/24.gif'),
6 p! C1 U, P1 F - (24, 22, '排球', '排球', 0, 'icons/9.gif'),1 @ P0 t+ z& x1 [% X! \. c/ e/ m
- (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),
% S/ R0 |# g% M - (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),
q# a+ R: l# N8 ?) o2 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。
9 V( U5 ^# C! i2 m( K* w5 E- require_once './classes/MyDB.php';
. I# b3 w$ A7 M( k& ^ - $con = MyDB::singleton();
2 ^+ {& m' S( a0 h' r; r - $sql = <<<SQL
# a! S9 o2 c- h0 `5 I0 M( L4 ^ - select * from bg_cate cate* Q4 j( F: ~3 X3 V
- SQL;
2 Q! v+ ?/ @& i( V - $data = $con->getAll($sql);0 K# F0 V1 y. B( h0 z/ B. I
- //print_r($data);
复制代码 数据库操作我用的是pear类库。0 V4 R3 j7 ^2 c; M
最后的$data的数据格式如下:0 ]' U/ z- E# Y8 X
- Array
, U7 }% P: Y1 t) V2 l2 f* Y - (
; M9 X* ~/ Z9 X3 n% Z - [0] => Array
8 C; E, }5 n, J; v9 j - (
) e8 N* t6 _ ?' z* N - [cate_Id] => 4
6 V( v: n- ~8 q2 [1 W% V - [cate_ParentId] => 04 v n: G+ }$ t% `: J
- [cate_Name] => 往事如风9 C+ e8 |# e% K+ J; N
- [cate_Intro] => 记录往事6 E$ l+ Z2 v3 `) x3 Q# l' x0 h! f
- [cate_Order] => 0
: N3 d3 Z) I! ^2 m' p8 |1 Z - [cate_Icon] => icons/6.gif- A: Q/ X1 Y# ^! `- P. d1 `( U
- )9 t* D% {/ r% b% X' o8 \ H
- [1] => Array4 w3 k+ M) l2 F; D+ t
- (
# V; _8 N/ W1 y6 w3 k - [cate_Id] => 5
/ Q$ H% c0 |4 u; S& L - [cate_ParentId] => 0
' K2 A, N* ~: J/ S e+ U2 s - [cate_Name] => 水煮三国
6 V/ ?3 u3 O ]; i - [cate_Intro] => 品位三国智慧
j' @1 Q8 k1 X1 B/ {3 `. m+ c - [cate_Order] => 0
/ C5 E1 R, _/ d& p - [cate_Icon] => icons/3.gif
: D4 ]/ A; X3 o - )
复制代码 三.把上一步的数据转为树型状的数组
5 }6 A# e& P1 s: ~0 ]7 v% T7 N代码如下:
# ~4 i' g- e1 [* l- function getTree($data, $pId)
, N* S& ?' ^( k) Y1 @ - {% o% y7 ?8 Z# H* d! B0 M" ]) u7 v
- $tree = '';
0 k8 ` d$ K7 w' I - foreach($data as $k => $v)2 t! E5 Q9 Y: X% U) \1 _# o, C, j
- {
2 J7 B' w' M! I- |2 E, ]7 P# O% B - if($v['cate_ParentId'] == $pId)
w. Y4 |- v/ E% T# ?0 h. I - { //父亲找到儿子
3 R( l9 s: y- ^* S- Z: u! G - $v['cate_ParentId'] = getTree($data, $v['cate_Id']);. j7 T& P4 ^) y
- $tree[] = $v;
4 F5 T8 K3 c6 `0 R3 X: k/ H+ V - //unset($data[$k]);
?$ q* A+ O2 V - }+ a' v" t9 G2 Y9 M3 ?* m
- }
! \5 A# Y( f2 g1 A - return $tree;
% p& h. d" l: x' l4 V: [( p% l - }
1 S L5 h1 Q4 f+ V; B6 M+ a. t - $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:# [7 G, F$ g- @& ^: j
- Array
2 w) _% {' W0 T6 x5 s1 L4 g$ u - (
" B* F0 n: V1 ^" Q* l3 i7 v' s - [0] => Array$ j7 Y. @- ^, S
- (
, I& B9 ?- d! w& I3 m) H4 M Z0 P - [cate_Id] => 4
! D9 K5 o& y2 s1 ~6 t - [cate_ParentId] =>' B7 P$ _2 H9 z) g6 H: F& \$ x/ a
- [cate_Name] => 往事如风2 c2 ^- v1 u g4 K
- [cate_Intro] => 记录往事
+ |+ w, a7 T/ d i - [cate_Order] => 0
* I" h7 i7 m( E# [. | - [cate_Icon] => icons/6.gif
7 a) G6 U) H% U I, h - )
( @% Q; S" l4 i# F5 E7 ? - [1] => Array
0 T3 z, x9 h- ~, W - (- f" h ?* ]3 i1 {
- [cate_Id] => 5* v5 P0 U/ _% m9 H% o
- [cate_ParentId] =>' d, G- [) A' z% ?7 N9 d
- [cate_Name] => 水煮三国) ]; F1 }9 _; \; P/ n* Q: d
- [cate_Intro] => 品位三国智慧5 a# g' H( w! N
- [cate_Order] => 0# l& t# x3 p* [8 F
- [cate_Icon] => icons/3.gif9 o# V; z7 ]+ J& e+ n$ h4 s
- )) [8 G5 q' r# ]8 h+ ~6 G
- [2] => Array5 b, U2 a2 V! @) K
- (
7 A1 F% O) ]0 j% y+ f+ K - [cate_Id] => 2
3 z0 d. q8 s ~# f - [cate_ParentId] => Array: ]) f7 w; N7 h7 C, ^2 Y
- (
- j3 f* P4 I+ ^( V+ W( _" A1 P7 B# l - [0] => Array
9 G; ]2 X" R1 P: d2 U3 ` - (. l$ C9 A! m% `
- [cate_Id] => 8' C) ? e4 f+ Y
- [cate_ParentId] =>3 f+ g# e8 g7 F8 f/ t6 C
- [cate_Name] => html
4 w. G+ V0 N/ a7 Z$ X% ? - [cate_Intro] => html学习. {" c( M5 }2 `, v# i- l* {, c# f
- [cate_Order] => 0, U" w6 E5 x- O* T( d: i8 ^
- [cate_Icon] => icons/1.gif
% L: y( k4 @2 ~2 _9 m - )
复制代码 四.把树型状数组转为html2 h8 ]& n% ^3 f. a* i
代码如下:* U, O: v6 q* s8 }* j: x
- function procHtml($tree)8 J! C7 T9 g1 Y; i
- {
% V6 x# s4 e2 z1 J/ C9 ]) i6 ] - $html = '';/ O4 |7 w# u' F$ d' p! o
- foreach($tree as $t)0 N: `# s( G6 e
- {
3 B2 _8 V- D, {# J9 {; s" C - if($t['cate_ParentId'] == '')6 {# `5 y& P( `: q$ Y2 @5 q. a
- {
* T0 |8 K; N/ r1 c# _9 x$ S - $html .= "<li>{$t['cate_Name']}</li>";2 K- D7 l% [5 E2 Z
- }" B1 U8 S+ S, T5 @* U$ R
- else$ q" C) A4 _ C! G# j/ l) `0 `
- {3 u) n1 j4 U) m/ X* V
- $html .= "<li>".$t['cate_Name'];
. ^4 g8 X; p R' ~ - $html .= procHtml($t['cate_ParentId']);. _; Y; d, e; L
- $html = $html."</li>";
; v; \8 P. U% \" _' L - }) t2 u& \& y1 K" L$ k# m
- }
% R& p; W+ ]4 X1 w: v( K- i! x - return $html ? '<ul>'.$html.'</ul>' : $html ;6 v. {+ l, M- [' [( j1 n
- }
Z9 Y; r9 m* y" F% | - echo procHtml($tree);
复制代码 输出的html的代码格式为:4 g& a) c& p2 M% c
- <ul>) i ?0 X& [! x2 Y
- <li>往事如风</li>0 z& G- L6 d1 Y' Y: l
- <li>水煮三国</li>
& n2 r& I4 ]( x( H: `/ \2 t- I: T - <li>技术学习6 B1 V& W1 X) Z; H9 K& C1 @+ z
- <ul>* W' I. i% E3 R- m% t7 s3 Z3 m6 K4 Q
- <li>html</li>9 n9 t: Y( `5 y5 N+ O9 x; A) ~9 W
- <li>css</li>! w/ h9 E; v' b; ?9 V. R/ E
- <li>php( L, }! h+ ^; x' I' J0 m% S
- <ul>- v7 e' ~+ L$ V
- <li>php基础知识</li>0 ~ [$ p' Y0 p6 l0 s: t! Z# w
- <li>oop</li>4 T) C* M& y1 ?- p' ^
- <li>php安全</li>
复制代码 五.代码整合" q. E n4 l) N+ T
- function getTree($data, $pId)
& d$ Q6 L% z2 n3 X% y; y0 B - {' t! q: p1 B: l# k6 _; h
- $html = '';, [3 f) d4 A* N; _
- foreach($data as $k => $v)
; l, l, ^' k' f T/ x9 u, M - {
: L) Y4 c0 ?( F/ a0 ^ - if($v['cate_ParentId'] == $pId)* o" }1 n$ F7 D
- { //父亲找到儿子
3 [5 j, Q! S9 T1 u3 D - $html .= "<li>".$v['cate_Name'];: ~) z- i% ]5 J" s. c( X5 f! ~" l* N
- $html .= getTree($data, $v['cate_Id']);
_% A- h; m: |0 ?4 d E - $html = $html."</li>";7 c3 O3 R r8 V! ~
- }2 T: `1 D' \0 D8 H: h/ x( c( U
- }
7 w" T5 S0 U. Y - return $html ? '<ul>'.$html.'</ul>' : $html ;! m; f& `! H7 f
- }
" m$ ~; M! O( h$ p* a2 N - echo getTree($data, 0);
复制代码 六.增加CSS样式
4 {! E2 h6 `* a1 c9 { l7 H
* G# u! ~0 J) h. {5 F
0 p7 J l3 y2 y5 l& q. f
第二种是从开源网站上看到的,非常非常的简介。+ ]7 g* [3 {# n0 V# k
- <?php
( P9 m- _( t, o5 {- B5 a' z - " z& w- U" E. J- w4 i: q
- function genTree5($items) { 0 l5 G6 ~; Y+ P, D7 m
- foreach ($items as $item) , x" ] y/ L3 ^( |# R/ p
- $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']]; ) _; W% U5 z% P) @7 C6 I9 _
- return isset($items[0]['son']) ? $items[0]['son'] : array(); : n' Q0 S; s! _2 ?6 ^ w
- }
$ g$ C! r* P/ N# i& f -
" L7 Q+ ^' e7 x+ X - /**' U; z# o9 y! B/ H2 {
- * 将数据格式化成树形结构
$ Q( A1 W. \6 Z - * @author Xuefen.Tong+ E7 B- E/ y( K
- * @param array $items
! N1 V2 E9 b+ i9 ]" a0 C - * @return array
0 a: O! d6 s3 n. ^* l- { - */
$ F( j9 ?- v4 H( r/ |- b2 m% Y - function genTree9($items) {; _8 M% S. B1 `5 t& S8 p \
- $tree = array(); //格式化好的树* ?/ i$ G. ]+ v b' Q, W! Q) t
- foreach ($items as $item)$ D9 z* E: p; U% R( _
- if (isset($items[$item['pid']]))
# D, ^+ q) I" u7 t- {5 o( a/ ] - $items[$item['pid']]['son'][] = &$items[$item['id']];
( {* [" ]9 P' L0 F# }4 v - else
; Y, i' [# g6 r- L+ S - $tree[] = &$items[$item['id']];& @8 E* ]: s* K5 B' F
- return $tree;! A" F/ y+ }8 Q% ]; A9 _$ B0 j
- }7 |% a* Q/ i1 O5 X
-
! o8 z( P0 }4 C @ - $items = array(2 k/ r, }: V& W
- 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),
9 l3 X8 Q5 \- s6 ~: ?" b5 P - 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),
7 }& v1 W' D: C [" v0 f6 Q: c - 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),
2 F$ n' b7 R1 d% _5 P% d - 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'),
. ]: h, R& h3 C+ Y - 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市'),& C; k1 h( D9 n4 { L
- 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'),
- M! V+ j; |6 B: J k - 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'),6 d, q5 ~ e) H& W* v% Q
- 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'),
, W2 B! f' \ Q# `, X! a3 f - 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),* r0 W2 d& y! b7 _0 U A
- 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),
9 R2 \' f: ~* w - 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),
c1 b, s' o3 P3 m - 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学'),( N+ n9 w7 t' u2 @* ~
- 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市'),4 _, ~; H% C9 @$ [4 f k
- 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'), M B1 N# f: G5 h
- 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县'),, c3 |: l$ e" U+ t& H/ Q
- 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),
& J/ V5 ?& ^# | - 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),
& a% D" n" k* |+ |# @' T, g - 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村'),$ c0 \! z+ W i. Z" G
- 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村'),* v3 g' l7 n% V4 i i
- );
6 f9 O: I/ l. w: d7 V/ V - echo "<pre>";
& G+ }& P/ q J6 h4 u1 M - print_r(genTree5($items));4 m7 C& n* D1 M1 n5 [2 d/ a
- print_r(genTree9($items));
7 R, v% O, u: [# e* |) Z) e$ z% n6 t -
4 C% L4 g1 Q) w: x6 G - //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+ x6 X2 L% A% b: h$ O
- /*" @$ j) |+ y- ^* w* {7 P2 U @: E* H
- Array6 i& |, \. Y7 `' U9 M
- (
" V6 M* L" O" h) g+ d8 i - [0] => Array: y# x" ?' S9 |, t6 O% C
- (8 k( V' M% i2 Z* Q h1 ]) P+ @7 ~) p
- [id] => 1
0 Y) c5 e. i) |$ B- L! w - [pid] => 09 F( M2 T% x7 ?3 J& g4 [1 t2 @
- [name] => 江西省
6 G8 S2 I, H9 t) Z - [son] => Array2 a8 [8 [5 U4 @+ D& j! C6 |. C+ _) I& h
- (! S" W- V0 q7 Z3 E' X1 o& _
- [0] => Array/ h2 I( z- W% `+ `" o/ C `2 Z7 e2 R
- ( I/ G3 |: q5 ? E' e7 x$ B" B
- [id] => 3
9 v7 ~# e" W( F3 ?! j6 i; w/ m - [pid] => 10 P4 L/ L$ P$ o$ I
- [name] => 南昌市9 ]6 \2 W: }% T
- )
: C r+ }" _4 i2 e4 e! ^' k4 d8 f3 I7 ] - / b9 {9 z9 T/ ~# Y
- [1] => Array0 A: \) v; U) }4 U$ b" e8 Z% v. J6 b
- (
' X+ I2 ?! M4 L: A - [id] => 13
( \* }8 ^ l3 o( j - [pid] => 1
& `. |5 _2 c. z- q- b( y4 E - [name] => 赣州市
: j" s; D, X E - [son] => Array( C9 g: k! W; A d0 F" W. l, T1 P
- (
; l* N% b/ u6 \4 ] - [0] => Array
1 p( ]" M, t5 j2 Q0 N( B: Z- e/ M - (
$ }. i" |5 a; E9 w0 K# M# `! K - [id] => 14
. b0 O" k. x5 ]1 w! u$ [, y - [pid] => 13. Q% T, N1 ^6 M
- [name] => 赣县
4 |( B* s( w8 A% X9 k - [son] => Array
+ r/ ?, L+ i2 N \) B# L4 l/ f - (* g" y! X m( ^, Y' v! d f# a- T
- [0] => Array
' v: M9 d- Y l8 P0 }1 z( F- u$ y - (
; v3 n3 Y6 K- F - [id] => 16
5 b1 s8 x) X8 Z0 H6 Q1 I8 l" z - [pid] => 14. ?/ } l2 p5 k& [
- [name] => 茅店镇' T+ r0 R5 i2 G7 \8 U
- [son] => Array
& b6 H5 s* ~1 E) J+ o" g3 y* e - (& V+ ]* d4 T7 E8 E2 @) g+ f
- [0] => Array
4 X3 M8 R: D3 L- G6 G6 l - (% C/ ~7 X0 j8 ]% |" j
- [id] => 18
; J) }0 S: F3 N. b( D' H7 Q7 W - [pid] => 16
6 Z$ {& x, i6 [8 n! O3 n - [name] => 义源村% c/ H' R t2 L' }9 Y
- )! a; R+ a" J- O( `0 ~2 S+ ]
- 6 Q1 ^2 z# I$ ^
- [1] => Array
# Y0 u! P, Z" T6 ^1 | - ( P; Y0 W- J+ q. u
- [id] => 192 c6 J# _; A/ D! u# w+ d
- [pid] => 16, L$ O* ^7 ~; a' W+ w4 U H
- [name] => 上坝村
- m- }6 c: g- [ V - )! c' h/ e. g3 t) ] H( z
-
% w- O% c6 @" O2 t1 O: x - )6 |* j6 r+ p8 w5 c" D% x* t
-
# Z# i- K6 ^' b5 H' Y1 {9 r2 E - ): O4 _3 g3 v; Q7 x: ^4 q9 ^
- 1 F2 Z% l( p2 S; C: k0 Q
- [1] => Array: Z, i( R" l, {2 Y; h1 O1 B0 I* f
- (# V- t( F) U- M0 v) ~' i1 W7 c
- [id] => 17
3 p, L6 Y1 P- N. f% B( ?# I% D - [pid] => 14
6 j5 L/ ]: L+ D, X( G/ X$ i - [name] => 大田乡5 s- R, A7 X7 ^9 ]4 ]" h
- )
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- [1] => Array
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1 x. g- I3 }2 f$ a. v - [id] => 15
' T# s. M& z7 M - [pid] => 13
) G1 s; D0 D( H1 m# W, G - [name] => 于都县; p7 l, R; T8 e: c# L) ?/ b2 p- M5 J
- )
$ c/ D3 k' l# r$ ?/ P6 V# g, M% ]; C -
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-
0 P5 {% M ~2 Y - [1] => Array
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- [id] => 2
5 |; ~& J# i& S% Y. ~9 I6 z2 u - [pid] => 0
: f; U! \ t4 T, h6 l$ O - [name] => 黑龙江省
9 x" `9 k, L3 D - [son] => Array
2 d4 ]: |6 c5 j - (
# \2 |/ _) s6 m. C - [0] => Array( R% W) K" D$ A) O- P* t
- (9 i. k2 F7 S" \7 j5 y
- [id] => 46 I/ K Y+ _" l
- [pid] => 2 F9 R1 k) g% @
- [name] => 哈尔滨市$ B' x; z6 x# L& X
- [son] => Array+ f, Y7 o1 J1 D
- (/ q, Q8 `8 H7 S8 v4 G( x) h: U) |! I; y
- [0] => Array, y7 Q9 L# O) P& D2 T9 V7 R
- (; [ ?% T( Z; b3 z
- [id] => 6+ P0 W/ L4 p& w. ]2 \- g
- [pid] => 42 M# a$ J; A5 m1 v% G& O o+ u1 f/ F: F
- [name] => 香坊区1 A5 M+ }, R! O7 j- }$ x7 h
- [son] => Array9 ~7 I9 s$ p5 B: n$ b
- (4 R; W2 F4 S! }( A
- [0] => Array5 G, D# e3 w2 X4 b8 H0 J+ l
- (
' e) g% X2 B/ U6 j5 m - [id] => 8
( s' ~* c8 x, c" p - [pid] => 6
( j7 e9 u/ j( L1 Z) O, } - [name] => 和兴路
& M3 s! r( P7 g% G. M6 E# f. a - [son] => Array
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: N! Z' \8 ]) M3 f - [0] => Array
1 O. }+ n. M8 E( C$ ]( j& f - (7 L6 l4 A( W* d: j9 p1 y( u8 G
- [id] => 10/ T8 d, Z/ P+ l/ V- d* ]
- [pid] => 8, z; Z7 T- g. I6 U
- [name] =>
; d$ Q( R5 @: x ^7 c% F - 东北林业大学
6 Y3 B y8 l1 m" L - )
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- [1] => Array, J+ Z3 B- V) p1 W
- (
& c' Y& u- {4 ~; r( }4 | - [id] => 12
) ?% v: S7 ~( b0 _; @5 d- ~$ r - [pid] => 8' X% V5 K, w$ E' q) z4 D
- [name] => 5 b' C) L. t* s/ R. S1 i, F) ~8 p
- 哈尔滨师范大学; y$ [% h$ F C. v
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-
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-
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-
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$ Y. E- K/ D( k6 Y" K7 K - (
( D% l, ?3 h4 m& P& c& F! ]8 Z) y0 Y - [id] => 7
2 f& e* X8 k/ H' z - [pid] => 4" a3 l0 O5 O4 w0 ?. ~+ N
- [name] => 南岗区
% ^. ~$ {5 ]- T2 R& {$ n - [son] => Array
( |+ Y' f. T% X6 C9 r: D# J - (
9 `9 G! N* s9 Z% L8 Q: u# E4 L - [0] => Array2 E [$ f+ N+ t& u' Z$ F
- (
- D7 K* {1 `+ ^8 W( s1 M$ u - [id] => 9
6 P. U) V# L3 Q: d - [pid] => 7
' G* m; T9 i1 [, ^3 q+ U - [name] => 西大直街: a. X1 i' k% i. g. N: U
- [son] => Array
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- [0] => Array: L# p0 R! W) ?/ Q' U' b
- (
2 H: ~9 o0 l) w9 a- I$ O - [id] => 11
8 w) L7 w7 I7 i) b# V/ Z - [pid] => 9
6 d+ l2 I8 t+ `4 D, e) ?% w - [name] =>
- y4 n5 B/ v" J: g$ j3 f* Z - 哈尔滨工业大学
$ D$ }. ~5 p; o+ y! ] - ), ?% p; U) m; l$ X; j$ V
-
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-
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- [1] => Array: [" R( w& ]+ L5 E3 x! l
- (
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7 Q) Y: b! f8 w8 i, ?* t - [pid] => 28 S- j2 F1 f5 g& ^
- [name] => 鸡西市
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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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