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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。: C5 R9 _% u/ I7 l$ q5 k: O( [+ ]* ^
一.数据库设计, R( P' W* l" h' S# V% w D) \
- CREATE TABLE `bg_cate` (
) M) Y* C% h2 z; Q( t5 s - `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,5 s# g" s, B( H/ S
- `cate_ParentId` int(30) unsigned DEFAULT '0', d; x) q. G9 _+ M
- `cate_Name` varchar(100) NOT NULL,% e4 U& C7 v% z8 l+ O- ]$ ?
- `cate_Intro` varchar(500) DEFAULT NULL,1 B% |4 a3 q0 k
- `cate_Order` int(30) unsigned DEFAULT '0',$ `" _* _+ F4 [2 v! y8 ?
- `cate_Icon` varchar(100) DEFAULT NULL,
' |* \& b" v; S( Q" _. W: E5 L: c# z - PRIMARY KEY (`cate_Id`)
+ V }/ D" `/ A/ p! G' p' s$ p - ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;2 [/ B, u8 \8 w
- --& ?! N- S; l' Y: u$ q6 W
- -- 导出表中的数据 `bg_cate`
. T3 T+ t# D# m2 e2 B5 I- M: x - --
6 @! a& ~9 @6 X2 L9 }' n. \& B - INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES$ q( [" h5 w" |1 I% o( x: z+ @
- (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'),( ]# a1 [% D/ S ^7 X, e7 r$ U
- (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif'),
8 ?8 `0 A% [- z" o. ?9 ?9 R$ F9 y - (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'),' m/ ^* j7 U2 z" q/ g9 Z' V
- (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'),
; D) s. A; c1 P4 G# r - (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),6 k9 B) O' }# e! \: d
- (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),
. w9 P" c" l7 m5 M - (8, 2, 'html', 'html学习', 0, 'icons/1.gif'),) o- d7 E% K- o8 U
- (9, 2, 'css', 'css学习', 0, 'icons/1.gif'),
- u# m- b9 {& W6 H. j - (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),, |8 q x' O, ~8 |& V
- (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),0 Y0 q9 l, o6 O6 j9 z' c; v* f4 {
- (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),
* F! D" @9 U1 Y- v - (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),
( [. P; P+ j8 t$ g$ f6 W# i - (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif'),/ ], c& }/ f. j l% W4 X
- (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'),
0 F& \6 V4 ?% _ E9 x$ I$ A - (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),
; I& P: h3 n/ y/ f5 j* f - (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),9 }; k: b4 A" _& R7 m4 Z/ t
- (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif'),3 _2 M8 I- A Y& Z' `6 L
- (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'),
4 P4 l" Y. B; n \9 a g+ H - (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif'),
4 M9 _6 b3 P+ s, g - (21, 19, '学习', '学习', 0, 'icons/1.gif'), K* O: O/ L: X' _+ z$ U* O% k
- (22, 19, '运动', '运动', 0, 'icons/16.gif'),
, q" j0 [4 _2 g5 v1 z, D - (23, 19, '旅游', '旅游', 0, 'icons/24.gif'),
* W- b. B. ~" H% m' U' i1 H - (24, 22, '排球', '排球', 0, 'icons/9.gif'),$ q" |* c/ G7 \% k' N
- (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),( e. B* N$ B8 N) k/ M( a& }# J9 h
- (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),
$ c# K, n b9 G8 r - (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。3 v2 A; X3 w! C& G& d
- require_once './classes/MyDB.php';. m& t# S* q% x* g. t A
- $con = MyDB::singleton();
0 Q9 r0 `8 L6 I - $sql = <<<SQL; t! j0 K9 U+ |+ A& m4 l( a
- select * from bg_cate cate
3 J/ @' `+ e# P7 y8 W9 N6 { - SQL;8 _6 A f1 v( a7 V N
- $data = $con->getAll($sql);
( W5 [8 A; _! I( L/ ? - //print_r($data);
复制代码 数据库操作我用的是pear类库。6 r! o+ v9 D# T7 A% t% ^* Q5 P
最后的$data的数据格式如下:
l9 C/ Y; K5 r+ s0 f- Array2 Q8 V% ?# Y& k# n
- (7 B- ~9 k" s* h( p* g
- [0] => Array6 j+ |4 D/ m5 p9 v% w6 W1 I
- (
1 W% A8 s4 B# A' N. r - [cate_Id] => 4! e" T. d3 k+ ~. x- x
- [cate_ParentId] => 0& V+ Z; Q6 L8 o' m
- [cate_Name] => 往事如风) M4 j, F, k" O& @
- [cate_Intro] => 记录往事) t, n, [+ n7 E$ N+ f
- [cate_Order] => 0) j: j* Q2 Q. l
- [cate_Icon] => icons/6.gif
$ o+ D: I4 F4 i6 Z/ S$ [/ r5 t - )
7 Y) V0 l6 `& l/ y% f" r. j n - [1] => Array" W: D& s. e6 ^; d
- (2 J2 z0 G/ Z3 o3 h$ z6 E
- [cate_Id] => 5
2 _6 S5 V+ Z& Z# N$ y7 n, y - [cate_ParentId] => 0+ c R0 F( a4 O& T
- [cate_Name] => 水煮三国
! l i+ t8 K3 k - [cate_Intro] => 品位三国智慧& i4 K% d9 H2 e
- [cate_Order] => 0
% i" j& S l7 t9 F% e - [cate_Icon] => icons/3.gif& T5 v' @5 x/ J& e
- )
复制代码 三.把上一步的数据转为树型状的数组8 V% i% r: a9 T
代码如下:6 X# l- C, u- [2 }) z
- function getTree($data, $pId)
: X8 N; e% h* p* l - {
X, t4 J* B. }5 X7 a; z7 F' O - $tree = '';
0 m! ~! g' P6 n/ m' ?) E - foreach($data as $k => $v)& H+ h% A/ p0 o2 V
- {
% V V* I* `; }* @ - if($v['cate_ParentId'] == $pId)
0 y/ y3 p+ L3 P) t: l - { //父亲找到儿子( y/ y9 F- G* A1 M F4 Z( t
- $v['cate_ParentId'] = getTree($data, $v['cate_Id']);% n! b+ X% U! W4 C" Y$ f1 L
- $tree[] = $v;
2 j; ~" b7 B3 [. F; {) U+ }6 x - //unset($data[$k]);, y4 ?; j6 U8 {, O4 {
- }0 i; O/ ?/ j; P% h1 k9 P9 h9 V( S
- }
- x. C- S( J% y/ }$ `; H - return $tree;
; [# P# k; s% d - }3 S7 I, ?8 x% ?0 ]
- $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:
y9 z" e1 i! W; N# A+ p% m4 ?, j! p- Array* I5 W! O, N; e
- (
8 F7 e- u/ ?4 W# J: g# A& | - [0] => Array
1 {6 |& J' `1 d4 y5 o, r - (
, ^; r1 |$ A: ^% l5 | - [cate_Id] => 4
- u) b5 H: O) J- |7 I+ R G' C - [cate_ParentId] =>+ k9 j0 N* C- @) s% a! {4 Y
- [cate_Name] => 往事如风/ @& {: Y3 P$ c- Z
- [cate_Intro] => 记录往事
! y' Q3 b" ?* G- b6 F, M - [cate_Order] => 0# h- w2 ^( `4 \9 t9 V
- [cate_Icon] => icons/6.gif. y" N2 {4 R! @' O' J5 F1 P4 X9 i
- )" S" b: ?+ S2 A$ d% g
- [1] => Array
: c( c0 n1 k& L, y+ G2 \4 E - (% i/ n2 G, Y1 d8 ^
- [cate_Id] => 5+ p; J& e9 k& v3 ~/ k3 f, D
- [cate_ParentId] =>
2 `2 E' y8 r" p; M - [cate_Name] => 水煮三国. O V2 M6 ]! K+ H/ t- b
- [cate_Intro] => 品位三国智慧' Y+ r1 W9 u% B6 _0 L
- [cate_Order] => 08 t- j( l" `+ i! R
- [cate_Icon] => icons/3.gif
! Q; m* t5 Z2 y/ p& w* t - )
+ L1 H0 |# V9 S) ?# w$ l - [2] => Array
) n, d- w' T- k; e7 i" T( b6 s - (
* n. ] v9 F; P" a - [cate_Id] => 29 G/ _* A# w }! v# L+ j
- [cate_ParentId] => Array D9 E, P4 s5 J2 }
- (
0 ~( L% u3 g" Y - [0] => Array5 K! B+ m: e, a4 v
- (
+ l! e4 a" o3 S - [cate_Id] => 8
" W% [! L; s+ U8 b - [cate_ParentId] =>
; m5 B: n0 C. q+ D8 }/ v - [cate_Name] => html9 s7 Z/ u, h! t4 b8 w( G- M
- [cate_Intro] => html学习
( T% p& P1 M% w" V, D - [cate_Order] => 0
6 _5 M C$ N A" G - [cate_Icon] => icons/1.gif
7 d1 F) Z. u+ N5 b+ @/ c- G8 K' I3 R" n - )
复制代码 四.把树型状数组转为html
) |8 C! Y5 c; I5 ?代码如下:9 K% V" L1 V/ i+ u
- function procHtml($tree)
Z' ~( J7 _* n$ Q+ ]" D' _; O- L - {8 {3 u" w+ }* d/ v1 [4 f
- $html = '';# k, M9 N" E# J) D& h' u' T
- foreach($tree as $t)
& F- R/ Y3 ]8 M& `, _' x1 a - {/ h' _; N. k; l+ t. o3 u# a& {
- if($t['cate_ParentId'] == '')
4 b7 b9 o! Z( P( j+ I+ _- d - {6 M+ L4 j8 U$ l2 b' m0 o$ o
- $html .= "<li>{$t['cate_Name']}</li>";
y3 P: F. O6 `! E- {* g, B# U - }
( O/ P* L" c7 {) x - else3 D- L2 N! k! e- E& Q8 }/ W' P
- {
; |. d. Z0 h P, n6 f s C - $html .= "<li>".$t['cate_Name'];
B: S: L' | v- B - $html .= procHtml($t['cate_ParentId']);( Y; ^. M" S" G9 S
- $html = $html."</li>";- l0 B* q/ {/ k6 K
- }
5 _4 `3 P# H7 q2 t$ O - }+ q9 ^& Z* S5 F; Q8 B W
- return $html ? '<ul>'.$html.'</ul>' : $html ;4 s! X: F* i( m* Q& U
- }
1 k8 O* F; Q9 Q - echo procHtml($tree);
复制代码 输出的html的代码格式为:# ?) F; R* o( f. F' B- q. v
- <ul>5 h, e& w4 R) i2 R1 C0 q! `
- <li>往事如风</li>( m$ D$ B2 O& S& D, P
- <li>水煮三国</li>
. `* l+ q! ? L) p8 x+ v; `+ q - <li>技术学习1 M8 l3 `# M; D
- <ul>
9 |& v$ v: X$ W/ n9 ], v3 |# Z - <li>html</li>
) C8 V: s# h# q4 W& x - <li>css</li>9 |, {: y$ m5 s d/ L$ R
- <li>php- n. ^# P0 T; \# e+ _4 u) U
- <ul>* z8 [& d0 G% R$ h2 x0 u; t
- <li>php基础知识</li>* e0 }& f: T% k. C' m
- <li>oop</li>
" U+ [4 H/ {+ Y- _1 q+ t - <li>php安全</li>
复制代码 五.代码整合
" C/ C; ?- C$ ^* R- function getTree($data, $pId)
: j7 ], B2 R0 B; j* S( l$ @ - {/ W) m' E9 J6 }7 m9 J
- $html = '';0 z$ w) Z$ d3 e( H: l
- foreach($data as $k => $v)
* q+ h6 R/ {( W" B% b$ i( @ - {! S2 a8 h" ~" D1 W
- if($v['cate_ParentId'] == $pId)
1 V: \9 n% y9 O7 N$ X/ c( ~/ q - { //父亲找到儿子
8 l& z7 K. S7 t3 J - $html .= "<li>".$v['cate_Name'];; F+ e! ~" \. ?. P# n3 K9 }
- $html .= getTree($data, $v['cate_Id']);
; l2 b9 T1 p1 r: D& M L - $html = $html."</li>";
; {# Z* I C' g. f* a1 u- M: S0 d - }
8 D; Y6 U3 l; t- j0 G; O. o# i - }
+ w. O- ?- [' r ^/ W6 ~' X4 b - return $html ? '<ul>'.$html.'</ul>' : $html ;
7 o& Q( y; ^0 B5 l8 e N - }$ D9 W) \4 a9 S$ ~* O8 p% s
- echo getTree($data, 0);
复制代码 六.增加CSS样式
, Z* x# F1 t2 N; m) }( m
1 l# S1 X; N" [9 B
+ k$ L+ b8 b- X& s: D0 C第二种是从开源网站上看到的,非常非常的简介。7 Z0 m$ i; m+ e; x
- <?php% p0 q- p4 W, z8 Y, O9 T4 R. _% j
- # g, g1 B# Z. v& @1 [1 t; X
- function genTree5($items) {
% B. Z6 p9 i [' l1 T { - foreach ($items as $item)
1 x4 E1 E% B; o, ^; }" ~ - $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']];
( w5 l4 e: L7 Y5 j - return isset($items[0]['son']) ? $items[0]['son'] : array();
" a' s9 R7 [% J( Z2 C1 r) i1 ?$ n - }
5 P. o/ f" o/ f. \& ?4 o4 W -
% M# ? B3 ^$ _2 Q - /**5 J+ K9 S* u: k1 K3 ?: Q, a- d
- * 将数据格式化成树形结构
2 m/ ?9 b$ n* J7 @! ] - * @author Xuefen.Tong1 t2 E6 C7 m9 W0 e
- * @param array $items+ e8 C: l& H q' \; _5 f
- * @return array
' X1 Q; L4 m9 H: V - */4 Y) ?! J3 y1 e" c6 _4 g8 ^
- function genTree9($items) { s) q0 U; p' T) k' J) {
- $tree = array(); //格式化好的树
2 A& \: t$ H$ ]" P) Z' ^ - foreach ($items as $item)
0 i! `* o* `" M$ [* W& w1 ^ - if (isset($items[$item['pid']]))
1 p$ f$ K+ I& p$ ^. c2 x' j9 E# z - $items[$item['pid']]['son'][] = &$items[$item['id']];
1 Y- O5 ]. ?" y( L/ k% n - else1 k6 }) H* W- \! @9 T' b: o
- $tree[] = &$items[$item['id']];
& G0 }6 l: I& M L6 M+ ? - return $tree;
+ F( J$ e) {3 X - }, P6 k2 ?% X$ v- {( F
- 2 V7 u R$ _2 G( g1 J
- $items = array(. d" [% [% f8 L# I8 t7 V
- 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),
4 ?9 l( p- y7 a. j) a: o - 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),
. p4 |) a) q: {: Z. n - 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),3 K/ o$ m9 H' z$ M, @: A6 i/ d
- 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'),, x K* f- N0 I7 P5 ~2 }' Z
- 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市'),
6 y& E$ k4 k5 x) W" P) {/ z; R - 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'),+ J* J# m4 q8 ^! u+ h4 {% ^4 d
- 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'),' W, b/ \' `9 {" k
- 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'),* {( b' P5 ?5 c# A& O
- 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),0 d7 O" V" d. M, v
- 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),1 e# D* k% R/ v/ {4 {' t
- 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),
/ }# ^4 x6 t( D7 c" B& i' ?4 s) w0 J - 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学'),
4 T4 e# y# a: `( }2 ] - 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市')," z& A- |) L6 a& l. b5 ]5 Z! q+ j
- 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'),% m2 b1 J+ [' w
- 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县'),5 A0 n8 J+ H; a! `
- 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),2 J+ f( N( f' {
- 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),8 j- c* S, m- P7 @4 ^
- 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村'),
0 w+ y7 ?$ ]! }( ^5 t- k* H - 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村'),
+ D1 P# K+ J6 b" z, ~# i - );
1 H C4 D5 ~+ U8 q& q0 Q' P+ z* _ - echo "<pre>";% W3 X' s2 f9 N, U) Y$ t
- print_r(genTree5($items));
! ~$ f& V) e: P4 H$ d - print_r(genTree9($items));( G3 N/ b7 { j7 G: w
- " e& m2 O, x* o1 x/ s7 W1 S1 _
- //后者输出格式,前者类似,只是数组键值不一样,不过不影响数据结构( ?/ t# e% D6 d. `5 W
- /*
0 x7 z2 t5 n7 ^8 p - Array
n+ k- X+ U" N - (. m8 z1 G9 s2 S6 x* B
- [0] => Array' T& _& F; z# r8 C
- (& @# k7 B, O- g( A8 S
- [id] => 1
! y* _8 M0 j$ P* r- A+ X - [pid] => 08 P9 u. G$ P8 y7 n2 K) B
- [name] => 江西省( p% j3 m& d8 d& w' J4 }6 K; y" L
- [son] => Array
% h2 X4 O2 l s1 V - (
( k4 p0 k4 y5 T$ X) @( ~! c i C" g - [0] => Array e! X% n9 y7 p p. Z
- (+ w) V1 G; X! R/ k+ U9 w: X
- [id] => 3
- L* z; P: H1 Q! q) T$ i) N - [pid] => 1
( e4 j$ ]' n0 ~ - [name] => 南昌市
3 l$ [6 K% f9 h$ v! \ - )1 B M8 n! z" C; }8 p& @9 ^( { a
-
; Z7 y3 i! m, h# d' W( \' ? - [1] => Array7 d6 _0 @3 X. |- Z K) B' U& @1 V
- (# A" H% d/ L+ k0 e. o; M
- [id] => 13$ w6 ^! |! T7 ]9 K, E0 m. h+ A
- [pid] => 1
% t7 a. q! N. F' T. B, g( N' s# {8 E - [name] => 赣州市
% [6 y. W5 K x+ M0 D5 X - [son] => Array
" z( b) z2 G) ^+ |2 F% T# ~2 d - (
* f6 b6 O, ?$ T* _6 e4 b - [0] => Array3 S2 C: K6 U' K6 E
- (* Q. N! J9 x7 A& s$ o
- [id] => 140 R/ @" A. \" t% G( N% W
- [pid] => 13
5 c0 w0 |2 ]) L% I2 c) `" A0 p - [name] => 赣县
/ f7 i: m3 [3 r$ |0 S - [son] => Array7 H1 _8 A: U' d) L# u5 i
- (
6 C, B) S- @% f9 v - [0] => Array
; |, c+ x: ~8 E. s6 t; b - (3 [; G+ [/ O$ Y. I/ x* ~
- [id] => 16 V ^' Y# s; }6 k" J
- [pid] => 14
; C4 p; c! t# ^9 i! a; O/ l' ? - [name] => 茅店镇( ~+ c- {. D4 n8 ]
- [son] => Array
0 O2 A0 X6 t( @5 S5 z - (
3 `6 D8 D: I v' k; g - [0] => Array* v9 M3 x/ \; D# C
- (
& `- V6 L& t! X+ \ - [id] => 18& c j% o- z/ Y/ u: `, r: B
- [pid] => 16
7 N& i) [4 d* k0 { - [name] => 义源村
c ^( W& A/ w# |- ~ - )
* P& x. `" Z2 {3 O, @ -
; E% _2 @! A0 P. O - [1] => Array( x. |) p- O- x$ C
- ($ Y" f0 Q+ p; G4 g9 f" b
- [id] => 19
; S9 X1 W8 I5 `" R% S# ~ - [pid] => 16' k$ z2 k' p5 x c
- [name] => 上坝村5 V( p3 t1 t( n! C
- )
1 b8 M# r1 j8 E -
7 E$ a7 d0 Q/ u, W5 g1 P; e - )
3 b% i- _1 [2 P* F2 E& e* d -
; j2 e# a6 [! r - )
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- [1] => Array8 I) \' [+ j' E$ M/ s. w7 K& R
- (
; n2 k" v' y+ {" F9 j7 a - [id] => 17$ p, t% e/ W& W; e: k* C, O
- [pid] => 14
: ?: M* |1 \8 ~0 @ - [name] => 大田乡
( \- S9 ~3 k& M - )
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- [1] => Array
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- [id] => 15
+ \7 Y4 L5 N7 M0 E5 a - [pid] => 13
" Q! f7 g8 Q1 c - [name] => 于都县
b( p) _. t& p: V; ?" e( }+ R; L0 i+ ` - )
1 X; x* l4 k( ]+ r5 i. ? -
8 S; I$ H Y. s/ F# m k - )
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- 3 {3 _+ k; F3 U- |: [( G
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-
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- (
e. A; @. ]1 J# y- f - [id] => 2
: p. \6 L( ^* U* E6 f4 b - [pid] => 0
9 H4 E e1 o6 \1 r - [name] => 黑龙江省
( T" X0 y9 R) M, f5 @5 q' y - [son] => Array* B$ }0 S) T9 r# y3 i
- (' A. b% i( g8 o9 t# D& Y
- [0] => Array3 y3 Z: K7 n; D2 l/ h) d3 U; \
- (+ Y+ K7 \* o- s2 T4 Q
- [id] => 41 Q6 D* i. @! B9 o7 G
- [pid] => 2
/ s, p* o2 J( l v1 Q - [name] => 哈尔滨市) L/ P1 d' s w5 i5 C6 Z! W8 l
- [son] => Array; {9 L( Z5 P' x* `# Q# X- }& s
- (
, h/ f8 \4 Q1 f# M - [0] => Array
B5 v* H& p! B: R# B. s5 v - (2 y: o2 q7 v* ~- I
- [id] => 6
- O4 ?6 n. e' Y% d4 u y% g - [pid] => 48 L* C9 A$ G8 e3 l
- [name] => 香坊区
/ H) p2 @' N* L! T, e - [son] => Array
7 N8 R- Z6 A0 ^ - (4 j' e. B, O, D8 x% R1 l; @: T- J
- [0] => Array
8 Y' Y& z R# n; z* Q - (: D" P& M$ E3 G9 C, x
- [id] => 8
' ]0 Q) F- _+ ^" q$ ] v- T* b$ k. A - [pid] => 6/ v' \8 Z8 P# B/ X
- [name] => 和兴路
' j' c0 e, G! l# o9 L# ?9 y - [son] => Array
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- [0] => Array9 l1 ^' W, Q" c7 M. p+ o3 V! z
- (
7 m( @) P8 E" {! O" t - [id] => 104 e5 a: a+ _ X: {. } _$ s" c
- [pid] => 8# s& k/ X" u, E) d6 [2 g
- [name] =>
; G( h7 }- P* C" q - 东北林业大学8 |+ v, n2 B, ^7 f/ y' s" A: ~' {# q
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- [1] => Array
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% u7 y( v5 d" \7 P* | - [id] => 12
& j% d/ I/ E W/ j' i! g7 J2 O - [pid] => 87 J8 H* r# g7 ~" T
- [name] => & ~' D& ?; X" ~/ w4 e
- 哈尔滨师范大学
8 ]' u# A. F) I+ V, E- y - )
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" g( w2 D0 h3 y* Z8 m - [id] => 7
5 Y- I V2 K4 c, P% N0 E# j - [pid] => 4
& f& O) h4 S" c# k - [name] => 南岗区8 ]( o$ ?# z! `3 s
- [son] => Array' }- a% g/ Y# D" }/ W5 Q v6 f
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( l/ X6 \4 ^! H7 p4 v - (0 t$ z0 [' s5 R9 {
- [id] => 9
4 b9 T5 X$ T% r: z& z3 l3 C- j6 A - [pid] => 75 j& n; X0 E2 b; q9 W" a
- [name] => 西大直街2 X( u- R5 Z! G2 I8 R- \
- [son] => Array
O; X& T) s9 ]( | - (
0 H3 d! A; Z' Z; A - [0] => Array
8 }# }& W3 L4 x: B - (
& y) C' D! _# h4 { - [id] => 117 v& }% K" X$ Z- @
- [pid] => 9
' q7 C1 w9 r z% X: D8 i+ ~, D - [name] => , I0 x( p$ ] {" d; Z( d* M
- 哈尔滨工业大学* `$ I- A! T" A" s
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-
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-
d6 x7 ]: o8 ^! n3 R - [1] => Array
! C' W, |! M/ N9 p - (5 {( R% [0 ]' Z) B) A! d3 l' k; a1 b
- [id] => 53 Z V o9 l. G' Y9 G
- [pid] => 2
9 `8 r* z; }, e8 _* Y9 p9 U - [name] => 鸡西市: R6 a0 h; |4 K! u# O
- )
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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。! |# g' x4 m5 E9 z6 R) E: _
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