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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。" y$ N0 p" b, u) Q8 ]; o- g
一.数据库设计
% Z4 C/ n. [0 W3 T1 d! Z2 a- CREATE TABLE `bg_cate` (9 H! D+ c2 N, c: O
- `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,
8 b5 r6 i2 r' l# ]/ e& H& Z - `cate_ParentId` int(30) unsigned DEFAULT '0',! _2 T7 z7 {, j% x" {
- `cate_Name` varchar(100) NOT NULL,
( G. f- }; [" N - `cate_Intro` varchar(500) DEFAULT NULL,
# \& C; r" |! D5 f, i2 C - `cate_Order` int(30) unsigned DEFAULT '0',
& W; w/ ?% U* N - `cate_Icon` varchar(100) DEFAULT NULL,
! a' O8 a" n* \3 `! T) I6 b - PRIMARY KEY (`cate_Id`)# p7 G( t( y: X, f: Z' `" @" K+ `
- ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;
: @* c4 ?; o$ v. D# m1 x7 {% g - --
* ]8 a) L6 A `, Z/ C - -- 导出表中的数据 `bg_cate`7 N9 q# r6 u# Y0 k& W
- --# I5 y6 X4 [2 C' s& ?) c
- INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES1 V# K$ d2 T3 Z; n6 u
- (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'),2 n6 f! [0 E- N+ s) g0 W4 q
- (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif'),
& x; c9 o3 P( C5 j6 ?6 U' k - (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'),6 h5 R# C& C: |1 ~4 {+ `- l" Q! f
- (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'),
?# f% [+ H: g% Y - (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),
9 q* z9 w" c( B$ {7 J$ z - (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),
8 @5 J5 ?/ S3 F2 b& e* Q - (8, 2, 'html', 'html学习', 0, 'icons/1.gif'),
' Z; V9 a1 s0 G% M, |( g* `' F8 | - (9, 2, 'css', 'css学习', 0, 'icons/1.gif'),5 k8 x# m/ V& O# q. f
- (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),8 ^: v4 N H, L. N
- (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),
& {" R% v3 M [) v) [9 b0 g" b* m% W - (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),
1 ?" J2 V6 s8 \ - (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),( F( j3 l Y+ E6 `9 w( j
- (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif'),' @, {4 @5 g. I# D1 Z$ Y
- (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'),+ R9 G$ w" ~8 _& I7 `2 r
- (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),
0 y" e, a2 e V$ E4 d - (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),0 V/ A" _7 c( }! p
- (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif'),, J7 A8 }' a9 F! L7 a( d3 N
- (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'),4 R7 x8 h/ { F5 b
- (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif'),
# m6 w; R# T# j B* M - (21, 19, '学习', '学习', 0, 'icons/1.gif'),
2 l- x% K7 l9 j _ - (22, 19, '运动', '运动', 0, 'icons/16.gif'),
9 G% q% A9 N7 l$ W/ J - (23, 19, '旅游', '旅游', 0, 'icons/24.gif'),0 l1 ^1 `2 N& ?/ H4 k7 X( S
- (24, 22, '排球', '排球', 0, 'icons/9.gif'),
" A- a( O+ R6 Y, v4 z* D# }. Q8 Z - (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),! b: a% P" f' ^ S1 s; a; z
- (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),; o( {: |9 `7 ?7 u/ A7 m' h/ \3 W0 D, `
- (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。
+ D$ t7 e3 \9 C3 ]+ y& f7 e- require_once './classes/MyDB.php';
7 V/ W) t* ^- d - $con = MyDB::singleton(); W; F" ~0 s/ o4 W$ _
- $sql = <<<SQL
3 T3 q2 G, K* Z% I v - select * from bg_cate cate) x9 t6 M7 }1 ]- r
- SQL;
! b' V. U4 v! N" f - $data = $con->getAll($sql);% w- h0 ~/ z% f3 r( \6 ?! I8 M
- //print_r($data);
复制代码 数据库操作我用的是pear类库。
) [* E- m" p% w# P; R. q2 n+ }最后的$data的数据格式如下:2 s2 N; D# o: b) g
- Array. N$ |! g, A, Y: X4 O( Z6 t
- (
4 k5 ^7 A& {& Q" Y& w% W, E - [0] => Array
* l; g; }: ?0 T! T+ m, Y2 u3 z - (3 x! o" L; Z( b! U
- [cate_Id] => 4! x9 L! O3 M4 u3 m! }: I3 {0 Z6 h h; c
- [cate_ParentId] => 0( c0 m$ P5 `* k
- [cate_Name] => 往事如风
) C+ c* {7 X. {+ ~* q - [cate_Intro] => 记录往事
; w) C3 O' J: j4 G - [cate_Order] => 0
f, z9 ~1 b& m4 ~$ S - [cate_Icon] => icons/6.gif
5 L9 w T; G+ h! f2 [ - )
, @" h! G% @: i# a- B - [1] => Array4 X; o# r1 o& B
- (3 |2 v8 b: N3 K8 o2 `0 W9 _( i
- [cate_Id] => 5) U9 D. c2 o5 `
- [cate_ParentId] => 0
6 H5 ^1 R5 i% u! p- j! Y3 C2 M0 U - [cate_Name] => 水煮三国, x4 C- q3 h) s
- [cate_Intro] => 品位三国智慧6 M- ^( h3 @+ i. [$ t3 @" b6 q
- [cate_Order] => 0
3 c# @# i0 j8 f. }2 S5 P8 F8 P - [cate_Icon] => icons/3.gif
: v2 p1 K2 j3 O! M7 q - )
复制代码 三.把上一步的数据转为树型状的数组6 ^& c/ T. G" k! a+ K7 U
代码如下:
# }) s4 Z- W( Y1 M4 @- function getTree($data, $pId)
/ \2 s/ {8 F0 Y) c! @. D - {( s7 m: B R; ~5 ~* f! \2 K: Y
- $tree = '';4 t' k1 T! }- N( L3 s
- foreach($data as $k => $v)& k9 K4 d9 h, }# f* \
- {: S$ s! B, y1 h! e
- if($v['cate_ParentId'] == $pId) V! j1 f4 R5 \
- { //父亲找到儿子6 ~$ E- h+ @. s* P* }5 H
- $v['cate_ParentId'] = getTree($data, $v['cate_Id']);
1 t0 d% a6 d" v5 y8 g - $tree[] = $v;7 ~' O8 b: M2 f$ l5 `; {
- //unset($data[$k]);, w4 }) E. e9 X4 N6 \$ q/ Q% }
- }. o5 \4 [# h0 M
- }- D7 x4 N' E, j0 i1 t1 w
- return $tree;+ `0 J" T% N' S0 p2 ?) }+ b B
- }
2 C, p1 R5 t# V: q - $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:
3 V0 B; q! z$ O' ]- Array
: J+ G& j' m1 ^ q- I - (
: F; z: x1 w/ a8 b/ f' O! Q - [0] => Array
7 \% d8 ~1 G p, [% y6 ? - (
2 s6 ^* _2 w5 s* R; j( s% \ - [cate_Id] => 44 X8 g+ Z* Z3 w* e
- [cate_ParentId] =>
9 I' H3 v0 Q" A1 j. h - [cate_Name] => 往事如风% a4 R1 |5 \) S* v* v
- [cate_Intro] => 记录往事$ P$ h) |* C# _
- [cate_Order] => 0+ y# i2 t3 p" H m
- [cate_Icon] => icons/6.gif. L; E/ m" ^) Y5 O( I( P( {- M) I
- )' T2 m$ [5 z/ s
- [1] => Array" Z+ K$ w. d9 x2 k( b5 n- v
- (1 T! c( u& s* X3 e
- [cate_Id] => 5
4 U( z6 u( u% G - [cate_ParentId] =>& F/ o Q/ ~- f6 E
- [cate_Name] => 水煮三国9 H. R* I$ Q! l5 D6 r/ l( R
- [cate_Intro] => 品位三国智慧
. O) k J6 o5 l# B8 x* X, ]0 y - [cate_Order] => 0
) w0 i* m3 Q: n- n1 w/ g - [cate_Icon] => icons/3.gif8 N2 T! H7 D! x4 \
- )
: @% D: f- q+ ?/ K4 N' S - [2] => Array
# M7 {* S, h y- ~% l2 y - (
# k0 E4 y- A! `( _$ R: i - [cate_Id] => 2+ M; _# W+ h0 I2 F0 F4 K! ?
- [cate_ParentId] => Array6 T% }, M7 Z9 V. g8 \
- (+ ^0 L' x3 m0 u# i+ H6 h
- [0] => Array
8 O+ d$ G* A) l2 n" ]8 f; h - (5 a8 F! F8 ~* I2 S' {; B. v
- [cate_Id] => 8
c7 e7 n8 e& j+ y. l/ h# r: n - [cate_ParentId] =>
4 H& O8 {, T) g2 R4 h - [cate_Name] => html6 C$ s- w6 b% i/ C$ z
- [cate_Intro] => html学习
" j; R# t8 V" c* r5 C7 M - [cate_Order] => 0
& `, n4 @) v8 F1 d& K - [cate_Icon] => icons/1.gif
; \! y9 v8 a" D0 K. C1 J; u - )
复制代码 四.把树型状数组转为html
: B! Q$ K* ^" h$ v4 X1 {代码如下:# u( \7 V- h% K/ Q
- function procHtml($tree)
$ R/ l) o2 l, c! \ - {6 G) U1 ~5 R0 h8 F& Q
- $html = '';0 h$ [( ]1 S% X# Z1 e
- foreach($tree as $t)8 S% J+ d P' `1 s% b D, ]# i
- {- J: r; h0 k* k, z! ]* I: s# M+ M
- if($t['cate_ParentId'] == '')
3 M( U) T- j6 f. o% N - {
* [8 o0 g! \5 h8 w9 l; x& c* o; c - $html .= "<li>{$t['cate_Name']}</li>";4 Y1 X& l q6 t- O6 G: b% S
- }
! ^ H% U( J! ^- C4 ] - else& D. l; Z; L' ]+ b
- {! f/ m1 E( n0 i
- $html .= "<li>".$t['cate_Name'];
* a, h# X6 F7 `. [ - $html .= procHtml($t['cate_ParentId']);, I# x0 U6 i; `# b. C
- $html = $html."</li>";1 m Y3 C% m) E5 |, Z
- }5 c4 I3 n& l" J
- }/ G: T) K# R i1 U
- return $html ? '<ul>'.$html.'</ul>' : $html ;2 S) M; b1 Z2 ~* M1 Z7 Y) G
- }
2 L2 e% A* S; ?0 _3 s/ Y7 ] - echo procHtml($tree);
复制代码 输出的html的代码格式为:+ b3 ^4 E5 X9 A# Z; Y/ \# g
- <ul>! [7 e2 o7 t" [! N( J- t
- <li>往事如风</li>% }3 O1 N3 C6 j* k( P6 O
- <li>水煮三国</li>" r/ G+ }" j3 U; J
- <li>技术学习3 ^& X6 ?4 R; k( q
- <ul>7 k3 d8 P2 c; F
- <li>html</li>
7 D# x1 B3 |. a! |3 G' w - <li>css</li>
% V& d% Y2 G( Q - <li>php
& h! q( D1 w; [& N" L - <ul>$ N' z( {# Y, k7 i' T% E
- <li>php基础知识</li>
1 F: V0 Q# m/ ~' h* S$ v" e - <li>oop</li># u- k7 ^% x4 E5 v. n
- <li>php安全</li>
复制代码 五.代码整合
& A9 H2 b5 b k4 e- function getTree($data, $pId)3 M. `" `: F3 I: d2 b
- {
4 a* {3 O& D' ^" g$ h - $html = '';5 V: [/ ~3 V6 N) R) M) h U
- foreach($data as $k => $v)5 n$ c$ V$ W9 C' Q) c3 s# N( z
- {; W* _+ L! a1 O. h
- if($v['cate_ParentId'] == $pId); [/ i' n+ j% l
- { //父亲找到儿子3 z& _4 Y. ?6 Q$ h. v: c: y
- $html .= "<li>".$v['cate_Name'];
% o2 I+ |* V9 r; K* A, N g: v: b - $html .= getTree($data, $v['cate_Id']);; x9 W- ?6 n; @+ w; V$ {
- $html = $html."</li>";0 ]' D- o6 q7 w% _ Q, d7 S0 c
- }
, h0 H. W5 a4 M& b# t - }
' ]5 N. j" W5 l7 \1 c) a( A5 J - return $html ? '<ul>'.$html.'</ul>' : $html ;- r& _5 v7 Y; R& r' A
- }
# I. _9 J. I- w2 b* g* `' } - echo getTree($data, 0);
复制代码 六.增加CSS样式* i n `. n; \$ E# K9 w% U" l% O
* D% _. J+ ?5 _2 q* O! E6 U0 Q2 z: D7 p- r- Q# `' ~- R+ e9 j
第二种是从开源网站上看到的,非常非常的简介。+ g) w2 L6 p+ h6 u, N! Y& Z4 E8 d3 R2 z
- <?php7 b* c8 j- i; n. ?1 {1 _
-
! m" P5 s: [ t: S! i% X - function genTree5($items) {
2 g) h5 I" o+ S8 P3 |4 @ - foreach ($items as $item)
9 I) M. l7 p/ i/ T - $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']];
5 |) y0 v% B3 U: q7 s7 j - return isset($items[0]['son']) ? $items[0]['son'] : array(); 3 m4 \8 U! @- X& E$ u' o' _
- }
) `2 M, s0 w' P; V _ - . M7 J1 {1 v- @
- /**9 e8 P, U v# G
- * 将数据格式化成树形结构) p- ^! D" U6 R0 R9 _/ i4 M
- * @author Xuefen.Tong
* W/ D1 {% [1 M+ Y - * @param array $items+ C2 h3 ]1 t7 J( T- l9 e
- * @return array 6 c6 ^4 r, m5 G! X$ z
- */
5 U" |5 Y, f! | - function genTree9($items) {! E- T1 P u/ n# z! P
- $tree = array(); //格式化好的树
( U; z( d6 V' i2 ~6 U - foreach ($items as $item)
7 [3 s/ k. {# t4 w' I$ Z0 C - if (isset($items[$item['pid']]))$ r1 ~5 w* }. l" |' S$ P
- $items[$item['pid']]['son'][] = &$items[$item['id']];, g5 B; q: {# Z5 C4 y& d. D
- else
/ ^% O a- [0 F. A \ - $tree[] = &$items[$item['id']];3 f( T g5 X o0 M8 D$ O
- return $tree;1 Z- A# h3 y6 Y$ s- E
- }8 h8 j7 x& z7 k. f
-
; L- l% a6 x H/ s9 B - $items = array(
5 R; a r3 e/ u - 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),- v7 b! Y/ E+ n5 ^( k+ M/ N3 W G
- 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),$ s0 `+ ]( W# r( G* B+ E
- 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),6 W5 J8 \- q, N) m
- 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'),
5 h$ Q7 c/ `- i6 n1 |- @" p, X" i - 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市'),
' P* w% l# \- B& r! X - 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'),
# q t9 v# F6 c9 N3 w. @& Q - 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'),
3 G) J# A( X# e% G+ j - 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'),+ K( `" Y( `0 F8 ~
- 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),. f1 s( L$ o5 J6 \0 j; V
- 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),
% Q+ E$ g! h" d3 |1 o/ H - 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),
# {& @" w0 \% V3 ~% `# t/ C* R - 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学'),2 W+ U5 I: h6 A. t$ o; O& A. @
- 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市'),
0 c" [2 H8 h' W- \9 V! s - 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'),7 u9 m! J% H; B
- 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县'),
+ q: ?* z) N$ ^5 e" } - 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),. v& Y1 q# T! H$ a+ m( l1 b3 J
- 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),. V& \; A7 l# M- ]( K
- 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村'),
2 C% k* C5 {0 Z5 n1 i: O6 M+ X - 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村'),' O, B4 g) X9 N$ s
- );! j3 k7 g8 B: d+ f$ G1 Q9 i7 i
- echo "<pre>";1 }( I# Q* v/ }- m2 s2 F8 K; @
- print_r(genTree5($items));. s2 J7 A0 W) R9 ?7 t$ x
- print_r(genTree9($items));# f7 v, o+ ~+ C
- % h& m8 y `! y5 m& q
- //后者输出格式,前者类似,只是数组键值不一样,不过不影响数据结构% ]( V) k: P; P- w* W: A
- /*
% v0 Z! E8 A% Y* H* m" s - Array# o7 G, {7 W$ c2 o8 J2 x# O
- (
7 q, J0 N7 S, s" V8 L- O; A - [0] => Array9 ~% u( H! x" d1 Z _
- (
) h1 c8 n# V4 [+ M5 J - [id] => 1( ~- h9 a, W. p0 o* @6 d5 O( b
- [pid] => 0
4 a2 |7 \" }# _% o' l - [name] => 江西省6 Q: [ ]1 y% t k* ^# e$ P: C- p* w
- [son] => Array* [* q9 O- e, A* Q; W$ I9 |) U
- (- J: i* d1 j5 D# E# E/ ^" H
- [0] => Array
# R$ Y! T' D0 C& A K2 H( \ - (, B* _" c9 q' D) W$ v
- [id] => 3; e' K! `# F% q. a
- [pid] => 1# d3 Q2 B! }2 I% j8 ~
- [name] => 南昌市# ~: c E& ?9 z) Y
- )
: E. J: l1 G) N6 ~2 K! ? - 9 Y) f2 A5 g6 s
- [1] => Array; u5 L" P, P" r8 Y
- (
' ~2 G, y! W# z% S - [id] => 13
9 V% U4 T. Z) N - [pid] => 1
' E1 c1 M) Y& s2 N+ y+ g - [name] => 赣州市6 m3 g) Z0 c# ~ b0 L
- [son] => Array& E( d) W, }6 g1 [- X) f# X
- (
0 R. t7 P9 n H - [0] => Array3 v4 X" C9 \5 e+ |/ E
- (2 n9 y& T/ B9 w) I% F, Q: D
- [id] => 14
3 ^- ]; D: G2 W' Q' I - [pid] => 13- k1 Y$ f& O" } f' [) S$ ~
- [name] => 赣县' _. R' ?9 T7 k
- [son] => Array
3 O. i0 K7 Q; R4 B' Y4 T9 s - (' \( o; e& s% c, S' ?' a
- [0] => Array
( x: H; i3 ^: `: D4 x, S9 m - (
% O5 D# w8 _0 h: M+ d8 D. P - [id] => 169 |. G6 ^& ~+ m; C6 l8 e) Z( e
- [pid] => 14) C0 ?' k. S5 Q0 o9 p
- [name] => 茅店镇& W y6 M# ^$ V) z& I
- [son] => Array2 C) i0 _, J! D) h
- (# L7 N& ]; V* Z& ^
- [0] => Array* Q+ l" U& @8 q" A
- (
7 F" [! s% o8 I6 S - [id] => 18
" s, n! ?9 K: B+ t* O# \# s* c - [pid] => 16: D( K _# X$ v. V, Q* y9 B4 e
- [name] => 义源村
9 `, L& }* {/ _, C8 p - )2 a" f R9 G N& F. O! Z4 |
-
2 D1 } Y; P6 i2 v - [1] => Array
+ ?) c8 C% T5 [ - (- N. s% ~: P z6 S7 L3 X4 I/ g8 v
- [id] => 19
5 e. E8 C" ]; N. ]; H - [pid] => 16
! j; v, f; Q4 i. P! s% n$ O - [name] => 上坝村
2 n1 e: E# W% Q - )
, t7 |( h9 P6 @& z% K+ l6 x& k4 X - % ~; ~, X; E9 t" f' t& \$ e0 P$ g0 }5 a; I
- )
5 N5 p! Y- }5 O) ^! f7 I B6 N& | -
! E- }- H6 I6 S$ ^1 ^. p - )" d9 A4 V# \; r1 R+ |
- * m N& G0 K# z2 R/ W- m
- [1] => Array. [; r1 @$ B1 @) m; I
- (' T, b9 {7 } L; Q. T
- [id] => 17( O; K0 f4 O1 }! E2 w1 m% e
- [pid] => 14
+ S6 F( a- n- A5 [$ H% u - [name] => 大田乡
* ~3 `6 G. ~( ` h, \1 ] - )
4 P- T- ~; m; `2 d! ~; T; _* F -
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- [1] => Array
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- [id] => 15
) l6 Z% w6 o$ a9 E" [ - [pid] => 13* k! Q% m8 a1 Z3 b! C# E. s
- [name] => 于都县: [: O8 x% o& f i6 B$ j+ L# {3 t
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2 `# y( p+ ]4 T& r+ E$ G7 w - 6 C1 ?' `3 T6 w
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$ E/ }9 W# v, z) o1 [9 [ - $ c/ u( p) T: L' A8 F4 K
- [1] => Array
+ o" @& N+ R0 U; }8 S% A" X$ t - () H+ |4 \ F5 D* b
- [id] => 2
3 j4 ?% s4 ^# s - [pid] => 0
9 l1 i+ L9 W& Z/ |. S% C# F! t - [name] => 黑龙江省
1 n4 V+ K1 f0 U6 ? - [son] => Array6 p* c: E+ m V' b
- (
4 o$ b) W+ B5 O7 [7 A+ U - [0] => Array7 Q" i) ]% g1 l
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# V- \" V( k0 D - [id] => 4
4 _' \/ z3 @( U$ U- L: d - [pid] => 23 c& l& u# S" a0 }9 k- g: \
- [name] => 哈尔滨市/ S/ w; n4 S8 l( A8 |
- [son] => Array) o7 z' w: s& J- p* j
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- [0] => Array+ _2 }) A0 V( D1 p
- (9 n' s" ^2 E2 ~( o! `8 R3 e
- [id] => 62 ]* d/ ]. r( `. g2 x
- [pid] => 47 f. ]- g& ?) s! S/ H R) x& P
- [name] => 香坊区' P) |1 t) g, O8 N) z# ?: L
- [son] => Array0 G1 }. c+ k1 A; v
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2 _! q1 g' \, d" ` k. I, k - [0] => Array$ k5 r$ C, y; }3 ?' z: i
- (: F, y; X V+ T/ D! e7 r
- [id] => 8% Z1 x y. q0 K4 e
- [pid] => 6
1 c' v1 ?% w4 _ G3 D# e$ J - [name] => 和兴路
7 s+ j) r+ F5 R: F' G2 P9 T - [son] => Array
4 B; h" X4 u0 O5 f! {: H6 o8 b - (
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- (0 ~6 T4 Z# r* O( U* \% N
- [id] => 10! U5 B8 R" \8 E% k& ?# `
- [pid] => 8: L( [: A: b2 e3 {7 ]
- [name] =>
% m2 j+ J2 k# {% N* P0 Y6 a4 ^# h - 东北林业大学 L# m( h$ [$ L/ \$ t5 o0 `
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6 i: R& m. B3 J+ T$ J -
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- [id] => 12, A4 W+ C4 k3 q4 U/ l( a( g
- [pid] => 8
5 Q( G1 B% k$ _ - [name] => $ T C- o2 g0 H
- 哈尔滨师范大学9 k! k8 v, G7 ?0 j2 S2 l% o6 l9 N8 L
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8 i) ]- {8 F g" b2 V8 I - # _* I+ W+ r" o& R% O1 D
- [1] => Array! a9 X! {2 D. k
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- [id] => 72 n3 l1 m7 r( w) R( s2 A
- [pid] => 4$ |! v+ w8 Q: e; w
- [name] => 南岗区
: H3 q; \7 h$ E$ Z& Y- z* m - [son] => Array
3 L6 n, {. L% ?8 F4 U9 X - (
% i$ N+ O1 S: s2 C4 j$ e - [0] => Array
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2 L+ \/ @" N% A, Z - [id] => 9
5 A1 a- D& y# l- w) K1 R - [pid] => 7
, U& {" A0 P- i; K1 E& s7 V4 k - [name] => 西大直街
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7 p9 W9 O9 b; Q6 ]/ {6 ~# H - [0] => Array* \( {; H" F% l- {. U; ~
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/ |. c, \5 C9 \; w3 V - [id] => 11
+ s3 S( ?2 u6 T4 z - [pid] => 9
/ F0 z) w+ k& P) G& z1 [ - [name] => ; J8 | d. R, Z, y8 [
- 哈尔滨工业大学+ Q* D, R" T9 ?0 @7 D% x3 \
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-
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7 D& O) I5 ^3 q, B& u6 q! p1 A - [id] => 5
- n1 P, [7 \2 B! Z' L4 |0 k: L& G6 b - [pid] => 27 A8 K8 s) Y7 m- d
- [name] => 鸡西市) D" J7 J. d, ~2 q5 ^6 }% T
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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。" f% O1 v& M) r$ ?' a, Q4 t
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