管理员
   
论坛积分
分
威望 点
贡献值 个
金币 枚
|
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。1 b& z) ~8 V! L3 L1 M
一.数据库设计
5 d& b0 }5 t6 _7 ]& Z9 R( u x- CREATE TABLE `bg_cate` ( U' f. W7 X. m, _
- `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,/ q' B- u f l% P8 ^! {
- `cate_ParentId` int(30) unsigned DEFAULT '0',
- [0 Q! D( m8 f# k2 o1 d1 @( Y - `cate_Name` varchar(100) NOT NULL,5 K0 I# b. J6 g; Z R
- `cate_Intro` varchar(500) DEFAULT NULL,
- L4 [9 [. |( E - `cate_Order` int(30) unsigned DEFAULT '0',9 N; P& ^9 S& ^6 ? E
- `cate_Icon` varchar(100) DEFAULT NULL,
! V" k( t( v* }2 c) W - PRIMARY KEY (`cate_Id`)% @: z- y$ L y; z5 Y/ l0 z
- ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;
6 E- _: c$ X3 C) M7 W0 W' P - --/ Z3 b' y3 g" S: y9 W! C0 B2 R7 W
- -- 导出表中的数据 `bg_cate`2 N. g n& t; |
- --- I- W) p4 u' |* Z7 \+ j
- INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES t) j( ?) |: L% V
- (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'),
, q7 f, z0 d+ }, }6 r6 u - (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif')," R- S& t5 @0 `1 c! n. h
- (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'),
% D, ?2 I x5 b: ]8 I8 }0 V - (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'),
# p7 O v' ?6 K# K* v - (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),
1 n4 h# E. d+ L+ j# X; h8 _ - (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),% z% g4 H, o% S% g" r
- (8, 2, 'html', 'html学习', 0, 'icons/1.gif'), L, {% V) z( m3 O
- (9, 2, 'css', 'css学习', 0, 'icons/1.gif'),
9 F4 ]% [; i g - (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),
`. n+ A4 A7 P# R ` - (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),, k, w% ~9 Q4 H& p
- (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),2 L U1 p" y( O& g; j7 t
- (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),: J, _! [0 [% f5 L; n& E: N
- (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif'),
3 n: B' [& _% T, \ - (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'),/ l1 c/ V K0 Y9 i7 U- I5 s2 I- r
- (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),
. T, r/ L- R' [* e6 e; G, t - (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),
: t8 u# W0 X$ @ - (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif'),
) z" }$ q0 Y' w! C% m+ W - (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'),$ a( W+ n7 W! b+ r: _& e
- (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif'),9 `6 F( F- ]& p3 i# X# r
- (21, 19, '学习', '学习', 0, 'icons/1.gif')," ^( P& k* }, Y, J7 M# M& [
- (22, 19, '运动', '运动', 0, 'icons/16.gif'),
4 c) q; z8 F1 x( ~4 i - (23, 19, '旅游', '旅游', 0, 'icons/24.gif'),) P% [; b0 X0 L% [. r5 d) h
- (24, 22, '排球', '排球', 0, 'icons/9.gif'),
7 n/ P# |/ j8 i4 t - (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),9 b e6 @/ F! V! ?7 H
- (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),
( L: ?* U# M4 v' m% m$ F% S: M Y1 ~ - (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。; Y' ]7 [& }* x
- require_once './classes/MyDB.php';
+ Q1 v# l% a& o - $con = MyDB::singleton();
" g" P' f9 ?/ n) z7 K' Z' _) l - $sql = <<<SQL
# {( @ ?1 K" j) a8 ^) W- F8 x1 j2 o - select * from bg_cate cate8 ~* f; J# u" h2 ^9 E
- SQL;
- A, f4 z9 m K& I' K - $data = $con->getAll($sql);
& R/ H/ ?1 b6 w; A3 h - //print_r($data);
复制代码 数据库操作我用的是pear类库。
2 d+ B3 o; [3 p! i1 a. n. i最后的$data的数据格式如下:
* A0 t' n. I$ R# m- Array: Z" y1 V0 X) v/ l" I+ v; a' o) D
- (
# ]9 D6 A4 J _% J% g - [0] => Array! B) h# n# x$ X$ l0 d4 Y" c
- (
6 u, Q( F" m5 g' l - [cate_Id] => 4
6 h& x) n) U2 ]; ~7 O" ]4 m4 k - [cate_ParentId] => 0: l7 f' c6 h R% |* A* Y
- [cate_Name] => 往事如风
6 \. I; {1 R8 x# A2 V1 X# p - [cate_Intro] => 记录往事* ?( G1 l0 j0 Q% Q' p
- [cate_Order] => 0
?# Q& n3 r! G0 F0 M - [cate_Icon] => icons/6.gif* Z& R& `. e0 i6 Q, G# j# `* a5 Z( J
- )& Q! t1 K8 l% ^" p; u/ U7 c" l
- [1] => Array
) p+ }9 ]: C0 t1 _& O6 S - (
7 i3 N2 { i3 g( h. W7 [4 j - [cate_Id] => 5
, a$ [8 Y. V9 s" A! {$ G& A - [cate_ParentId] => 0
7 Q& M1 A6 Z: i2 {; g# Q: i+ B, N - [cate_Name] => 水煮三国 j. y! Y0 o3 {' w
- [cate_Intro] => 品位三国智慧9 n [: d' m* l- A$ L4 X6 o& Y$ y
- [cate_Order] => 0
) E+ i: M. B1 g) M9 G& s' g - [cate_Icon] => icons/3.gif
6 n+ q6 k. K) }( t - )
复制代码 三.把上一步的数据转为树型状的数组
. b! x: q1 v1 O/ y$ |代码如下:
. @8 K4 W i8 z# @3 j) T- function getTree($data, $pId)2 Y) `3 D8 {6 t- U4 F. B0 d, g
- {# i/ K: ?' V; u! m
- $tree = '';2 F v- B. T4 X% L/ x
- foreach($data as $k => $v)/ x# H! b! [ D6 c* p
- {* b$ c. {- @- D% F# _0 x" Y, p
- if($v['cate_ParentId'] == $pId)& |) {+ Z% x ?' i- \ X) o
- { //父亲找到儿子 c- l1 _, X! \7 M2 V
- $v['cate_ParentId'] = getTree($data, $v['cate_Id']);; S/ V! d9 y) u! ]* A% E# o. q6 B9 @/ `4 T
- $tree[] = $v;- A0 {( f* K8 N
- //unset($data[$k]);
: ^8 V4 T8 a6 r4 o4 A5 U - }
! i1 {7 t5 J$ i P* H; Z6 ] - }1 s# i4 z: O4 M( \" T
- return $tree;5 V9 j$ ]8 @* B# s5 p% H/ s# p. E0 C
- }
( B* p7 F" c8 _" e; p2 X2 h8 l4 o - $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:6 n. T4 R; `) t7 y1 D* r
- Array, `0 V- p3 ]3 i$ U- U% p
- (
) ?0 f7 s+ F- g/ ?" Q- |/ e" V3 { - [0] => Array" r& _) [- A7 D* `% I/ @7 [
- (4 P" F7 @8 U* l: r' b% S) P2 j
- [cate_Id] => 4) |. \2 r* n; n
- [cate_ParentId] =>
6 `6 H& f4 `/ o& r5 u" y - [cate_Name] => 往事如风
% _4 s$ E* B0 c - [cate_Intro] => 记录往事/ T [2 H4 i) y
- [cate_Order] => 0
2 G" w1 S+ a8 C5 L( M" T8 s - [cate_Icon] => icons/6.gif3 q$ d. t% g8 L
- )
4 L' w4 ~$ S' J& { - [1] => Array
# R6 l/ C M b3 j7 _3 U! c - (
- V" C. O" g6 d' s8 V' n' Z - [cate_Id] => 51 L! x( j9 ]* v
- [cate_ParentId] =>
. s( p4 d) S$ ~, D" x1 F - [cate_Name] => 水煮三国
( @$ `2 D, f4 n9 o - [cate_Intro] => 品位三国智慧9 h8 j' q s, |/ d
- [cate_Order] => 01 G; U" l1 d. J1 o: I$ i/ P
- [cate_Icon] => icons/3.gif
& m/ N( S4 S% m' v* ^ - )
9 F5 B& c* U7 k, \& g - [2] => Array
. F1 }( h+ d. @+ y1 P& d* e - (1 b3 S( h4 H: W; P ~6 \
- [cate_Id] => 23 L' ^5 _+ d0 y: C
- [cate_ParentId] => Array+ z8 g. r# L& h
- (
0 o! R+ r0 K+ s" c' T - [0] => Array9 z& z/ ]2 r3 q1 m3 F4 y A( e. ~
- (. [0 [) @( [& i/ c! I z+ F
- [cate_Id] => 80 Y) g- j# i. K; S' S
- [cate_ParentId] =>
( l0 A& U6 ^3 K# D7 q4 u - [cate_Name] => html
0 ~/ p) K' l% m( Q - [cate_Intro] => html学习
, l3 J" _' q% b7 {+ {4 C. C1 O - [cate_Order] => 0
" C2 L" |( }9 a/ j6 E, w - [cate_Icon] => icons/1.gif8 s4 E0 v9 A+ e4 D3 t' P
- )
复制代码 四.把树型状数组转为html. j6 ~ D. Z/ r1 J. l
代码如下:1 `: l1 V: y3 @ l- Z$ }! r" ~
- function procHtml($tree)
7 \. s0 c( Y5 z& ?1 P- S! K - {5 U1 z+ [, c7 v$ A
- $html = '';4 L& b, |8 n+ ?. d
- foreach($tree as $t)
+ F% C, I8 Z: u! y4 S9 ?# ` - {
1 S! {# ]5 E) K% y" g( O) } - if($t['cate_ParentId'] == '')
8 N. n' _6 l3 A* J2 g/ ~9 T - {4 r0 U" `4 `3 |# W; s$ H' ~
- $html .= "<li>{$t['cate_Name']}</li>";
. Z6 \1 F6 @ y) [ - }
, F& {6 L! u. l0 c, i" R9 E7 |. e - else0 V" f4 m# l! G) X
- {
* q9 O. w( d4 b2 ^+ G - $html .= "<li>".$t['cate_Name'];
+ H) Q4 T: A* t5 ^" G/ [: ` - $html .= procHtml($t['cate_ParentId']);
) M: @4 F" T5 }- c. }9 {* y A - $html = $html."</li>";1 O7 h% n' V2 k
- }
( E5 W- |* Z+ M; [" ] - }
! l, F7 R* `+ a% g9 [0 @7 ] S) w - return $html ? '<ul>'.$html.'</ul>' : $html ;
) O8 t8 P2 w! X6 o% J( |7 m; ]2 w - }% P6 g' v! P. b' I) S2 T$ y' d$ r
- echo procHtml($tree);
复制代码 输出的html的代码格式为:% y! {0 H4 j* ~ f$ r+ o
- <ul>
4 Y: W Z/ A$ V% ] - <li>往事如风</li>4 W4 ^ D( g" t! q0 g7 N8 ~4 e( M
- <li>水煮三国</li> K+ j1 Q% Q! b+ T
- <li>技术学习# ?* s7 q7 J3 ]- w) b8 w
- <ul>% P5 t; O0 \' p9 V
- <li>html</li>. Z% N, k2 O: @
- <li>css</li>0 C: `* N3 U! D, f
- <li>php
* A; W3 O4 M. G% }( m- m - <ul>8 B* L8 Z; b. t% T6 p& J
- <li>php基础知识</li>/ C/ [* }, b; `( T. s- t/ p9 c
- <li>oop</li>$ U; _# I; ^9 i0 T# }* s. N* K
- <li>php安全</li>
复制代码 五.代码整合+ X4 V& ]( ^: _5 g7 @
- function getTree($data, $pId)
( Q& s/ N! u# _6 D: l4 x' f - {
; n( }8 _/ e- O' H. Y - $html = '';
6 ?& r- U& M& j. E - foreach($data as $k => $v)6 S4 ]3 S! X* O
- {5 C1 q0 u2 E$ y/ Y
- if($v['cate_ParentId'] == $pId)- h8 y" m( l) Y. Y; V. Y# y3 q
- { //父亲找到儿子3 \, p1 m: j2 U, C; }
- $html .= "<li>".$v['cate_Name'];2 z* X j' I% \3 t# T" f
- $html .= getTree($data, $v['cate_Id']);. G% ]$ ~3 H3 M9 Q8 Q+ q
- $html = $html."</li>";
1 L! E& A3 G: h' _) _' b! ]7 [1 k - }- x/ a0 c+ C' |" v3 H5 `
- }- A) o) _: j6 p& b* w1 A
- return $html ? '<ul>'.$html.'</ul>' : $html ;! } n* G& W7 C$ ?# v, Z! i" o
- }
$ }( V5 {% }/ i$ r - echo getTree($data, 0);
复制代码 六.增加CSS样式' w0 i k$ V3 o, z; C/ C) Q9 U
- `- D! h) |& Z8 v1 p/ I' {
/ z5 b% @1 ?, s) Q0 } v# h
第二种是从开源网站上看到的,非常非常的简介。
5 N9 g( }) c9 c3 n2 M! e) w5 g3 j' w0 X- <?php6 L4 n* B* _* V3 K5 E4 y
-
' |. f! d- ~' u6 y2 `7 L$ p - function genTree5($items) { 6 ?+ C4 o3 j' D: A/ A
- foreach ($items as $item) - O! [3 M/ ^8 r! s
- $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']]; 9 L& L) [8 P. x2 M
- return isset($items[0]['son']) ? $items[0]['son'] : array(); 6 m) H3 v# y: d
- } 7 Z$ P6 K/ C* } ~
-
8 E+ ~5 y0 P L! N4 r6 e, o& q4 Q" m, I t - /**4 e/ {6 @# K" F8 q- B% g
- * 将数据格式化成树形结构0 {7 G) _( d1 f
- * @author Xuefen.Tong5 x6 B# F* c8 {; {1 D, r
- * @param array $items
" x5 s6 P0 V* t7 F - * @return array 7 m# I3 u2 M/ W8 u7 m
- */
4 O! f2 g& i6 W. }3 L* o: \( a6 M7 O - function genTree9($items) {
# m. x( l& t5 j5 _ - $tree = array(); //格式化好的树, e( H+ L; }; j4 ^
- foreach ($items as $item)
* \' ?& F0 c4 _+ z, T2 S! W. n - if (isset($items[$item['pid']]))# U4 ^: N9 K$ h5 d' P5 s) d; L7 W) X
- $items[$item['pid']]['son'][] = &$items[$item['id']];9 z* I8 S7 b. n. f; k- i% F* W
- else5 q2 t3 H% d1 M
- $tree[] = &$items[$item['id']];0 ]) ], h$ T1 d/ T
- return $tree;
9 s* U4 t, A* I( x - }# |7 t- k2 H6 [3 A4 F
-
# J6 ~6 N; L1 ]( H! y% f: R# W - $items = array(
! u% _9 Y2 \8 ]+ ], i$ @+ N. O5 o - 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),
) D8 A7 d3 x$ |% f - 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),
5 c3 \3 f( ^; G/ x - 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),; F& u4 n6 L" p! @) ^
- 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'),
9 h& W3 Q. h5 O* X: x - 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市'),% [; Y) q0 [2 C
- 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'),
* m1 ]& Z* I# b - 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'),/ t, Z+ r$ `; X: |: ?- L
- 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'),
+ Q5 r: C, x; D: x z) ^& u - 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),! O" C2 B7 D4 I, l
- 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),1 k& y* w8 v2 i. @6 E4 F- Y7 E( U
- 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),
, c+ a; x9 a( ?' e- C - 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学'),
2 q; |7 Z3 l* U7 I' f - 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市'),/ A5 S7 Q& n& x; ^- a0 ?+ S% {
- 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'),
5 K: y1 e" V% q - 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县'),
) G# Z, C5 a( U+ \7 l - 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),
9 \" h" U+ h) g - 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),5 Y5 `$ j0 c0 `* S; e' ?( Z
- 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村'),3 I. [+ l [8 `% H0 {% F
- 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村'),
/ ?+ L- g* T' ?: Y* o# D1 {: V - );
# [* Q4 t9 g0 k4 ]$ Z; }/ J+ ~ - echo "<pre>";
/ c8 G: F# d1 S - print_r(genTree5($items));9 r1 ]. s5 r6 Z+ U j
- print_r(genTree9($items));5 |: V k* L8 i
-
5 j. a* u/ m8 F+ r: X - //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1 h6 Q0 n0 ]- B1 y
- /*" k5 d; Y- G3 r5 B
- Array
) \0 L0 H, Y8 O9 m9 ~4 X - (
, }2 Q0 D* T8 C. n l- ] - [0] => Array# s/ M6 B- j, h: e5 L
- (( V7 e. h& K3 E y" A. l( T' b. b
- [id] => 1
6 h4 n" z0 {. i2 w8 N& S& r - [pid] => 0
7 P2 V( J* a6 n- s! B, R9 d! N - [name] => 江西省2 J3 [. k( g1 R/ e& B; Z; C
- [son] => Array
' m4 E2 Y/ C% j+ {7 T) Z2 u - (& v" |4 Z/ f' N$ D+ Q5 C6 t
- [0] => Array+ e, f; B" w# J1 f
- (
" b6 V$ l( w9 v& k; C4 R: c - [id] => 33 w: s$ d* J( O. w6 F
- [pid] => 17 p4 ?7 Y' Q2 f8 O7 T
- [name] => 南昌市- O. m i6 m4 ?3 O: _
- )
2 `8 a- r; p; P6 \- O1 g - % t5 ]0 w, z. f5 i i
- [1] => Array
{8 [! b0 M/ ]# g - (
+ y% I7 G1 G; l/ w A3 y9 I - [id] => 133 b5 x7 H/ Q( O2 W$ d
- [pid] => 1$ D) M! H0 u0 z9 }4 J! I6 X
- [name] => 赣州市
: M: c6 P1 D6 d$ c% z5 s - [son] => Array: ~$ N% V* `2 L- `* E/ Y& V
- (* t" @7 M T3 U% _# ]
- [0] => Array2 u$ y) x7 b' \
- (
+ A; k) N" S2 j/ f4 }$ j$ A3 B - [id] => 14
i% w( r0 q' n# h5 T) H - [pid] => 13
( x( f' [ ^1 p; l. G - [name] => 赣县
: ]( E. ]3 @- V( o - [son] => Array0 K4 d5 I1 k" ?5 n& B# l
- (: x3 q0 d9 ~8 D. e" w) u1 b: s
- [0] => Array" k3 }' N' c7 d4 V
- (; F8 \4 |; B$ o5 D
- [id] => 16% ~* ]( \- G3 d
- [pid] => 141 t& {5 M" J( L2 V
- [name] => 茅店镇$ g0 T1 B; I, Q
- [son] => Array6 Y- v: O( @5 m6 c
- (5 ]. M( q r& g4 D/ K
- [0] => Array+ v6 q) c7 B+ A& E3 g
- (6 J! a N+ J5 i1 `
- [id] => 18
- o! R0 D" S5 I. E. T - [pid] => 16
% W6 i" N$ q6 b' `! D# d - [name] => 义源村) Z& H. o1 G) ?4 ?
- )# \3 T* D0 H5 F6 W9 Z( `" m
-
7 l+ x0 p7 }/ Q* z( ~ h; N - [1] => Array
& |# _( X3 W1 @ - (6 B& K2 C% V$ V7 t( x! ^
- [id] => 196 P2 V1 L( X; r5 f) Z8 P
- [pid] => 16
) \. v/ a# J: s! v& s* W - [name] => 上坝村$ b! G+ T# M& F3 O( L' z0 ]7 D
- )
" y2 R P+ j; [, a( Z4 i -
! W: ^0 P; `7 }( S/ i - )
0 a: c/ `7 p0 Q6 n -
; S4 x& M$ z, a5 t- o - )' g, u4 P( T2 P# Y
- / w0 E6 Z4 E4 Y1 O" c6 J
- [1] => Array9 K& h0 v' i, j9 a" E v" l
- () v& A' t* }4 Q# T. c4 z! u, l
- [id] => 17
) D: V/ q$ w- U: W6 j, f, s5 f - [pid] => 14
' ^7 J) R4 H+ `. n8 ] - [name] => 大田乡
% I! q \: {5 k1 H* T7 M7 i) E( s - )
/ ~. K$ {% Q9 b2 D S; f - 3 z7 s. s3 B9 J, q Z
- )
" e$ I' Z5 U- ~+ v4 s - 0 u! r& ~, L% A+ x, e# N0 ?& D7 l; H
- )# g" m' Y% m( {" W( f
- ! j8 R D. r7 q' W
- [1] => Array
3 C. o5 D( Z3 ?: i/ b - (1 M' Y9 A5 E; l2 x! @' X
- [id] => 15
+ D P% H& D- H9 Q+ p; k: O - [pid] => 13
+ F$ M6 _8 ^" X3 z/ y, B0 C - [name] => 于都县5 _7 x1 Y" f' s o1 O& p. ^" w: G
- )) L+ t2 C \5 _9 ~2 \
- / S5 J$ t A& \5 c* l7 @$ v
- )
/ v) A f9 \; ? h0 B7 D* k @ - 7 f6 _1 @7 Y8 k% |9 w3 ~+ i
- )
5 t8 a. Z& z8 W - $ v, G3 M+ z8 }2 X: R
- )
: I7 Y/ ?7 U, l! n! } -
3 ]. I; o7 [+ [& D - )2 ]7 P2 |' u; Q" s
-
! { t: }( @6 P0 i - [1] => Array
1 G9 l1 g6 {9 Y) q3 r - (* u! y8 r' _) k
- [id] => 2
4 _9 x3 i; _8 f% _, u" s - [pid] => 0, D F; W, q& D3 L
- [name] => 黑龙江省8 i3 S# r- [+ M% K. e! @
- [son] => Array+ \0 i. o. h9 n
- (
) s9 |$ G0 o4 f# i0 g& s - [0] => Array6 c6 O. h$ H; w3 m1 q. r4 {3 d1 g1 K
- (: a# S; T7 T# }3 {5 S
- [id] => 4
4 J* b! c. K" i+ \ - [pid] => 23 S( s9 x5 a. _: S- u, {5 R
- [name] => 哈尔滨市. ^7 K( w0 U: s0 l
- [son] => Array
2 [4 x$ Z: ~7 [5 D# J# J, K - (: Y9 m0 D* R5 t6 _% R# h
- [0] => Array+ r/ V% ~) t) _$ S" h
- (/ |$ [9 M% C6 \ @7 d2 Q
- [id] => 6
! }2 s* `; @* R. |7 j* p - [pid] => 41 ~/ P( k* j* \$ X9 `8 P( M* B
- [name] => 香坊区! g& C7 V. A+ U. n, t8 W* c0 [
- [son] => Array$ z" a+ T; a! Z& K0 _
- (
, u4 c/ x7 t5 L& V - [0] => Array$ G/ K% `( R o5 y& z x
- (
! k* r3 T, [/ u$ x5 W( Z- l) X - [id] => 88 x& V5 Y4 c7 N8 s
- [pid] => 6' b" }$ e; x' A
- [name] => 和兴路
: I" q/ n0 U5 {) [: D" N - [son] => Array( v) y0 w/ b; O8 N
- ( H A4 |9 K* @
- [0] => Array
; |9 x" `" f5 M) i0 o$ r0 ? - (
$ S7 R' o4 y9 O1 R - [id] => 10
" C4 W: ^" Z2 P2 f: ^7 O9 `3 p - [pid] => 8
- ?$ b9 q: B: t3 m) W - [name] =>
1 @( Q$ p$ `3 } - 东北林业大学8 m l8 b) m- f( g4 y
- )# o" y1 w3 ]) a
- , N9 t8 S5 s2 _: |2 F4 s
- [1] => Array
( g9 O# o/ b7 i. I - (* D' \& q! z/ W/ ?7 e9 b& q: [# M, l7 Z
- [id] => 12! [! v: Z( u3 i* C# C
- [pid] => 8" G/ p: ^1 a2 |* H) X9 N5 V
- [name] => 8 u X; p* \$ A! |. X% v$ \- B
- 哈尔滨师范大学
! u4 m, j4 a b, S" m2 a3 g9 e% |: M5 \ - )
; A E: t0 M3 T. b' h" w -
. U7 V0 A% J8 I$ s$ R& ?, D7 A - )
* _- f& I. {# T5 k1 q) |1 m6 P -
; l8 B: V0 I5 W9 M- Z/ [1 U0 v - )
5 K& N5 r" v- v, Q# r4 ^ - ( k9 N k: w4 I. A& n
- )
. U S" a" r& K0 O- V5 { -
" s: i6 |: R/ c- M# a$ p+ S; t5 _7 ? - ), i8 \1 z4 g4 N" m% w. G
-
7 ?& I* @: Q4 a$ y1 l6 N% e/ D - [1] => Array
5 a$ Z; E7 C8 V1 A4 m4 G) I M - (: l1 f) T0 o& |! P0 f0 V' y
- [id] => 7" ~; d# o+ Z D+ z* }7 f3 R
- [pid] => 4
4 |* ^% @4 v7 V - [name] => 南岗区$ L7 { u3 ?# J4 {* }' Q
- [son] => Array8 K0 a4 W# e! W5 c" X. C7 F9 b/ R2 `
- (: | Y3 x3 u! i5 Z- M
- [0] => Array8 n, b3 P1 G+ y( L
- (2 c* C& P: C; @0 O7 p; @
- [id] => 9
' s) b+ g- H# k2 `4 d7 I - [pid] => 7( {8 j# y0 }" x4 ^% e+ m" t( U9 x
- [name] => 西大直街' }; w. `- d- ~7 O" {
- [son] => Array
2 d0 n" Y. |' t9 i4 R Q" z - (
9 }- E1 l4 u1 b. a% N+ Z - [0] => Array
8 A/ r6 z' Y& c0 _& P - () }5 k5 F" K4 I; z8 c# Y# L
- [id] => 11( z8 D" @, |0 m: K$ v5 l& N9 u
- [pid] => 9; B' W. n$ d ^% d0 ^* W) ^
- [name] =>
# X4 Q& E+ z8 F$ E7 X$ D, d - 哈尔滨工业大学
! S' O# n# q4 Q4 ^; c0 a/ I - )
( @7 p0 j% J6 f. @1 c1 g - ! H( K9 q9 r, W+ T0 j1 X: {0 L7 O
- ); i6 g w9 _" N& y0 j4 O7 w+ E# a
-
8 x' ?* r9 ~# j' L- l) q H - )+ U! r1 U- j3 ~4 T g# I
- ! |! G8 _' U2 ^4 I9 O$ U: i9 l
- )
( H8 f, ]- B- u* n -
9 E) W" ~1 O- a5 t7 K ` - )
0 q& X; M" k' m) b) ~ -
2 E& p" Z- i* {* I, v; d/ S - )5 |& |: y p: X0 _
- ! D5 s# f. \4 K c {3 C
- )3 M" Z3 s k6 K7 t5 X7 }: s9 ^
-
/ v& ^, ^) u) n& i) U$ Z$ N" ] - [1] => Array
4 T! N6 M- H& T, \5 Y" W - (+ a- E/ k8 j$ g4 F/ @& n& ?
- [id] => 5
$ R+ F- E' Y8 ~ - [pid] => 2
/ U5 Y: U2 j. G& D$ u7 ~ - [name] => 鸡西市3 t. q5 z7 H) H) i0 C: X" W. L
- )
. ^! M! L) @9 d1 z. r - 7 y, B8 \6 }( F8 h" C6 B
- )
/ r- t0 @% v. u% { -
1 P& {9 Q3 S! y: c8 | - ). @5 v9 h# j& G9 e
- )*/
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。# ?5 h1 C5 k3 f8 u1 p$ e
! h. u3 d) X! E8 K) z: |: A' A( y7 E1 A0 h1 C$ l& W; {; y( S
3 ^, Z3 R3 Y. L3 Y0 O/ c8 n* X* j9 {
|
|