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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。
* l9 S- m- i; f- v一.数据库设计
& D6 D) m. b/ f- CREATE TABLE `bg_cate` (" h# M7 B9 z" l1 [6 A9 J* e' y2 n
- `cate_Id` int(30) unsigned NOT NULL AUTO_INCREMENT,- D2 z `$ G* t5 D/ Y5 u1 n
- `cate_ParentId` int(30) unsigned DEFAULT '0',, q0 O# y1 _1 X5 Y( t- |
- `cate_Name` varchar(100) NOT NULL,9 ?+ C- s- W1 o; ?% T
- `cate_Intro` varchar(500) DEFAULT NULL,6 ]; A2 R6 i, W' Q! I
- `cate_Order` int(30) unsigned DEFAULT '0',
- Z5 e6 e" ]9 r2 z( i- I4 i; g1 S - `cate_Icon` varchar(100) DEFAULT NULL,
. O/ K2 l% t9 o1 E! d- s - PRIMARY KEY (`cate_Id`) }! Q0 |7 b Y; W' u2 R9 i" o
- ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=34 ;2 O1 c) y! N" [2 k
- --( w' s: E! ]2 c4 \( a
- -- 导出表中的数据 `bg_cate`
6 `: B! P( K5 M: Y) P - --! O& B% h6 S6 T. Q
- INSERT INTO `bg_cate` (`cate_Id`, `cate_ParentId`, `cate_Name`, `cate_Intro`, `cate_Order`, `cate_Icon`) VALUES
! V; s0 c, p1 E/ X v$ v - (4, 0, '往事如风', '记录往事', 0, 'icons/6.gif'),) J2 c$ ^. j$ g
- (5, 0, '水煮三国', '品位三国智慧', 0, 'icons/3.gif'),7 C; m$ @$ w; h: u2 X. }/ K5 w4 D9 K7 x
- (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 m0 u6 o6 v9 d! {. j - (3, 0, '生活点滴', '记录生活点滴', 0, 'icons/2.gif'),1 B- x) T$ y$ T5 K: H
- (6, 0, '栀子花开', '青春无限', 0, 'icons/8.gif'),) G; k% | W& \! B1 S
- (7, 0, '假日休闲', '悠闲、自在', 0, 'icons/24.gif'),: U8 e9 m# S6 d
- (8, 2, 'html', 'html学习', 0, 'icons/1.gif'),
* ]; c+ y$ a$ w7 z& T) { - (9, 2, 'css', 'css学习', 0, 'icons/1.gif'),5 s- q# }8 W0 j9 Z' [- g' Q
- (10, 2, 'php', 'php学习', 0, 'icons/18.gif'),* G+ F [& @; n, K4 W2 C
- (11, 10, 'php基础知识', 'php基础知识', 0, 'icons/1.gif'),$ h3 t( b/ y# Q7 j' [
- (12, 10, 'oop', 'oop', 0, 'icons/1.gif'),( J; _* t4 J9 ~/ ]
- (13, 10, 'php安全', '讲述php安全', 0, 'icons/1.gif'),7 n6 Y. N/ f/ L5 y: s1 g
- (14, 10, 'seagull framework', 'seagull framework', 0, 'icons/1.gif'),, `* F( z2 x" C: _9 q
- (15, 2, 'javascript', 'javascript学习', 0, 'icons/1.gif'),, K4 N" [3 m2 o9 `+ d: c: b+ o' G, z+ g
- (16, 2, '设计模式', NULL, 0, 'icons/1.gif'),9 ?/ K1 j; _+ I- V1 O) W, c
- (17, 2, '软件工程', '软件工程学习', 0, 'icons/1.gif'),
8 N' E/ U' r9 [' E* d - (18, 3, '厦门生活', '厦门生活', 0, 'icons/8.gif'),* H, n- d4 a ?" F0 i: q" P- C1 D
- (19, 3, '大学生活', '大学生活', 0, 'icons/8.gif'),- V4 {- C8 A9 I& a
- (20, 3, '童年生活', '童年生活', 0, 'icons/15.gif'),
2 @& W9 e. Q; t! A0 D - (21, 19, '学习', '学习', 0, 'icons/1.gif'),- r# l+ k9 c8 g
- (22, 19, '运动', '运动', 0, 'icons/16.gif'),
6 n a( i3 J8 N& _3 } - (23, 19, '旅游', '旅游', 0, 'icons/24.gif'),8 Z' d4 Y3 Q1 B$ f
- (24, 22, '排球', '排球', 0, 'icons/9.gif'),
& ] n% F) Z) W4 V; w4 w, D# Q - (25, 22, '篮球', '篮球', 0, 'icons/9.gif'),7 p+ I& x: B% @* T- E0 a
- (26, 22, '羽毛球', '羽毛球', 0, 'icons/9.gif'),6 N5 ^: o- Z0 b0 M# t J
- (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。5 J5 r5 I& X, Y" a
- require_once './classes/MyDB.php';5 C- d \/ e, B! j
- $con = MyDB::singleton();3 i# i1 l& o) l# S: `& E
- $sql = <<<SQL8 `% N6 A& N8 s5 a* f
- select * from bg_cate cate5 E) O8 e7 k: e& ^% R+ I8 y
- SQL;. l! ]3 a2 m- w, t
- $data = $con->getAll($sql);
/ q$ P' \; w {. ?) a: T - //print_r($data);
复制代码 数据库操作我用的是pear类库。, g4 N! G; Y7 n$ F7 u
最后的$data的数据格式如下:
7 g# h( q2 v8 O& P- Array3 X3 a/ V K7 M) r
- (3 H# v6 Z7 R( G% }5 i, T. A3 g
- [0] => Array
1 y) c, T9 j( e i& E N# X - ( N1 K3 U7 k6 x& @* B- N& ]
- [cate_Id] => 4' N; Y$ f v$ e$ ?
- [cate_ParentId] => 0, b( U4 a, E0 M5 Y
- [cate_Name] => 往事如风1 @- R- `2 r$ K3 v7 S3 ~2 D
- [cate_Intro] => 记录往事, u6 k. e. C5 T
- [cate_Order] => 0
- y n) v9 Z1 l/ H/ u - [cate_Icon] => icons/6.gif. E( J6 S% \6 c4 p- o( d& K- d8 ]
- )
S% S6 G- p. B - [1] => Array
; R8 k3 ?! f+ c; l+ { - (
1 t- C' T- N' ?% z- m$ w - [cate_Id] => 5* Z d5 r4 F6 n) n# t7 W* f
- [cate_ParentId] => 0
2 A, A9 ~' t* Y* j - [cate_Name] => 水煮三国
0 M+ \" e( K- l+ R) c8 ? - [cate_Intro] => 品位三国智慧
. D- F( P' u) M- V& D - [cate_Order] => 0
* U' |0 W7 Q1 L3 j4 z) \7 h - [cate_Icon] => icons/3.gif
' ]+ J; F. J* d6 |2 y) `: U5 U - )
复制代码 三.把上一步的数据转为树型状的数组9 t1 ^/ C6 V+ u5 n- |
代码如下:
5 q* g$ y& }+ G# F- function getTree($data, $pId)) v) g2 Z" Y/ A' b
- {3 y# m! N7 s( ]* }# J0 k
- $tree = '';
8 F7 I1 @% V) ?6 e7 [0 A* d - foreach($data as $k => $v)0 b3 i8 V: b, S9 t o
- {! ~4 M/ S k* o4 z+ B7 q
- if($v['cate_ParentId'] == $pId)
6 J% d! R- L F/ a7 C - { //父亲找到儿子
5 z9 i- ?7 u, h! e | - $v['cate_ParentId'] = getTree($data, $v['cate_Id']);* i3 v% C) v# t$ h
- $tree[] = $v;! ~' f. A+ c' a5 ]( }# _2 L8 W
- //unset($data[$k]);& w# S7 P# D( |; L# K6 U
- }
1 {; S2 r6 z' \ - }
0 Y8 V' v6 U. B( V G% R; K - return $tree;
W; E; C7 F* g' K# b+ }/ m - }
2 U, G0 w9 H3 \& y2 d; @ - $tree = getTree($data, 0);
复制代码 最后输出$tree的数据格式为:" B( }8 a: o" B. _3 r* S
- Array6 w: f5 f( S5 B7 u- M
- (: d. n, g1 t- n) T- O% m- r& y% t: O
- [0] => Array. s% x0 H8 H' ^5 R
- (
5 q9 s0 d0 O5 j - [cate_Id] => 4
! `2 F* @' W4 S# p& U# f - [cate_ParentId] =>
$ X5 m6 f; n: U8 x - [cate_Name] => 往事如风: D; y2 k9 n& Q& }8 y
- [cate_Intro] => 记录往事
6 Z4 u* r1 ~& b' {. h. Y+ n0 O - [cate_Order] => 0: L& m5 t! L( s7 A9 d8 x) j( _
- [cate_Icon] => icons/6.gif+ H' O: j2 C9 B9 L/ s0 c' S5 Q* ~' G
- )
+ j$ B+ o. @" u! M# v1 {! i - [1] => Array
4 }2 g- Y( L, H. | - (- V, ]% C V& j6 C
- [cate_Id] => 5
8 _ o! t7 f. o4 u0 @0 Y - [cate_ParentId] =>
# i) h2 @3 M: s/ q7 k4 x - [cate_Name] => 水煮三国. p- m5 _0 k1 j/ H4 S& ]
- [cate_Intro] => 品位三国智慧
3 C8 x5 G1 v1 U; ~' x3 i: u5 P1 J. r - [cate_Order] => 0
9 V1 k1 U) |2 t* p - [cate_Icon] => icons/3.gif1 Z9 y5 s; N* P
- )
7 J- @# ^3 f4 i5 f - [2] => Array, W) ^& K3 i" ?- V8 V2 Z. R
- (" Z" z$ D3 _* ?6 v
- [cate_Id] => 2 b0 |; _! f0 o, ]
- [cate_ParentId] => Array( S. r6 M' a2 x* Z
- (
2 N5 ^$ }2 s% Y: O, T - [0] => Array; B9 E0 x& ~- e6 O9 t+ i
- (
; h3 q. l+ @. @% g; E; n - [cate_Id] => 8
8 p1 H7 \/ g) w1 {* t* C: t: s - [cate_ParentId] =>
1 W$ G; E( A/ ^! q. s& \ - [cate_Name] => html
- B/ C, [* ^9 m) g - [cate_Intro] => html学习) w, g% ?/ t% K3 u" n' _
- [cate_Order] => 0
( m6 l5 h* s7 W9 ]5 n - [cate_Icon] => icons/1.gif
% M8 a9 g I3 Y( G: h - )
复制代码 四.把树型状数组转为html- ^+ Q- N3 K" M3 H% y1 q# ~
代码如下:
% B- K, o# j6 ~% C- function procHtml($tree)
# ?( x* G" Q/ @5 M* O4 @ - {
. A6 z, L. n. \- ^* P6 b- M - $html = '';. f7 d! Q$ m* H4 O* ^! N0 Z
- foreach($tree as $t)
# a% D& A& w A! a - {
: C" P S* r5 d9 T6 g - if($t['cate_ParentId'] == '')
# |6 Z9 R) I& V/ M - {
& H* t1 t6 M% x3 [# b0 B% z - $html .= "<li>{$t['cate_Name']}</li>";
4 i; D0 ?4 S$ Z - }/ ^% I1 g' ^8 d! T' S( \" U
- else
# M4 y0 h# {7 B$ R. }% T1 W - {
7 k+ T1 G: O$ ^8 j) m% \( [+ \ - $html .= "<li>".$t['cate_Name'];( ^, [ o" P$ x, h8 a, v1 ^$ W
- $html .= procHtml($t['cate_ParentId']);
' a0 V8 E% f8 \- E - $html = $html."</li>";% y* E/ x" \2 c
- }
& m" j( M' `0 U. w/ j) z4 ? - }0 R# y) Z% ?7 v4 G2 }) y( e* P7 s; |
- return $html ? '<ul>'.$html.'</ul>' : $html ;- a& _( V( x* \: d2 i9 d
- }$ I# ]& a' _( f/ k+ L' o
- echo procHtml($tree);
复制代码 输出的html的代码格式为:
4 G( o) g' [6 z# {5 U6 V' G- <ul>
! J. z' b& H0 d - <li>往事如风</li>$ [% A$ u+ p& z+ A6 N" h" P- y) K
- <li>水煮三国</li>5 h1 p) F5 e0 ]" A
- <li>技术学习8 J- C) Z# U0 i3 Z3 M9 n6 r: p
- <ul>& ?$ K) U' d' }3 T% Q
- <li>html</li>
" y6 N, @6 A# C" u5 e9 a - <li>css</li>9 C+ O' R) d* J* ]
- <li>php4 c1 f* h# }8 v2 `9 {
- <ul>
( t8 X& i( G. w5 n. n+ I - <li>php基础知识</li>! o8 j1 J" J% _6 Z
- <li>oop</li>3 g5 A$ H5 c4 }
- <li>php安全</li>
复制代码 五.代码整合
' t2 h4 R7 ]2 u) d1 E( y1 h- function getTree($data, $pId)/ t( o3 \* i* F/ l6 D; e% T
- {! k& Z4 c, Z* R# j. a8 {
- $html = '';" X1 P$ p7 n: i* X& \# v
- foreach($data as $k => $v)
2 F' R/ n6 Y. w" w" ?: y - {# k4 P' y1 i$ u& a7 V, n
- if($v['cate_ParentId'] == $pId)+ I- f H. N* ]" h
- { //父亲找到儿子3 }3 T4 }4 R! H9 z# a! p
- $html .= "<li>".$v['cate_Name'];. u7 r/ z: @: Y+ m5 j7 S
- $html .= getTree($data, $v['cate_Id']);
: ^- C9 c/ I3 ^9 V - $html = $html."</li>";9 g" [5 G; H- T7 t$ h
- }$ Y, `% L+ s9 e: _; t
- }
+ a+ s; E S/ C+ i& S3 _1 g0 k2 W, i* n - return $html ? '<ul>'.$html.'</ul>' : $html ;& F/ ~. s; C _0 R1 s
- }
& [7 D$ J1 l3 L, a5 m - echo getTree($data, 0);
复制代码 六.增加CSS样式
0 ?& V% m; j+ g" R$ _* |- Y
7 U3 z$ d# `! t5 p" }$ J
/ P0 c; S2 y, z9 P1 h% Z e
第二种是从开源网站上看到的,非常非常的简介。# v: P6 O- ? o3 }
- <?php- b9 K$ r; J9 o5 D0 u# S
-
' _3 w2 p4 u/ S0 w/ i0 t' @; F3 } - function genTree5($items) {
) M+ v" E o! F; @ S" O/ M - foreach ($items as $item)
# H) U, V, `6 r - $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']];
2 f! C/ c6 T8 ~ E- o8 C - return isset($items[0]['son']) ? $items[0]['son'] : array(); & [7 I n" x& k4 I
- }
+ W- b2 t* B* I6 w( L* C -
4 a" L! m9 k6 |' Q. c - /**, R( \' |1 z" @2 q0 [) s3 F! q
- * 将数据格式化成树形结构- B% a* A/ m+ X9 x7 i
- * @author Xuefen.Tong0 a# l1 w" h0 W* V+ n1 t6 |, A: V# \
- * @param array $items
$ K! H2 @$ S5 g) a. T& a - * @return array
5 L, P6 S! o4 @. ]3 Q" Q! f9 K, @6 a - *// d, H; G+ N; `
- function genTree9($items) {
- _" t. @* p5 h6 |; \ - $tree = array(); //格式化好的树
8 o9 }3 g& l0 U7 ?# x6 \ - foreach ($items as $item)
7 f% `1 p4 `9 z- G. X - if (isset($items[$item['pid']]))1 V7 Z2 I4 R2 m6 g! _# v) d
- $items[$item['pid']]['son'][] = &$items[$item['id']];
" H t& |- |9 w+ Q) T - else
* z# ^6 X+ [4 Z" q6 u. Z - $tree[] = &$items[$item['id']];
& _0 P2 h/ h' w2 B/ J' h - return $tree;
! X0 Y! O- g+ e, E6 W: N( F1 W# { - }
+ P' V5 Y ]% E2 a! a - 7 A1 b1 ?: m3 w5 x/ o7 ^
- $items = array(
R2 ]0 [9 x d: N; M- S - 1 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),3 w4 M M# A. F2 a1 }
- 2 => array('id' => 2, 'pid' => 0, 'name' => '黑龙江省'),, E" B [7 E: d4 l
- 3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市'),5 p g' p3 ?" n! p! K; y$ Q
- 4 => array('id' => 4, 'pid' => 2, 'name' => '哈尔滨市'),+ |* x2 E( z4 b4 P4 z/ P
- 5 => array('id' => 5, 'pid' => 2, 'name' => '鸡西市'),
! y9 G @# @, R2 N* b4 R: y2 Q' t! m - 6 => array('id' => 6, 'pid' => 4, 'name' => '香坊区'),+ ^- m3 C' o* l6 m% W+ m
- 7 => array('id' => 7, 'pid' => 4, 'name' => '南岗区'),) K2 T" |: L% E9 B
- 8 => array('id' => 8, 'pid' => 6, 'name' => '和兴路'), \7 w7 Z: u7 q3 ~
- 9 => array('id' => 9, 'pid' => 7, 'name' => '西大直街'),8 J8 h0 _! g1 |5 p( d- y7 f
- 10 => array('id' => 10, 'pid' => 8, 'name' => '东北林业大学'),
# r& E5 Y- f7 ^- o9 G% k - 11 => array('id' => 11, 'pid' => 9, 'name' => '哈尔滨工业大学'),
/ o* U: R0 c( b+ G! I7 A4 D+ B$ B - 12 => array('id' => 12, 'pid' => 8, 'name' => '哈尔滨师范大学'),
% M& `: N% K; \7 P1 _2 H* u - 13 => array('id' => 13, 'pid' => 1, 'name' => '赣州市'),* G( `; a! I0 U
- 14 => array('id' => 14, 'pid' => 13, 'name' => '赣县'),- B; B9 O- J3 c! `; G* r
- 15 => array('id' => 15, 'pid' => 13, 'name' => '于都县'),* k, k( q" L6 ?# g1 B( n; v
- 16 => array('id' => 16, 'pid' => 14, 'name' => '茅店镇'),
7 c% x* \- E! D7 c2 i5 o - 17 => array('id' => 17, 'pid' => 14, 'name' => '大田乡'),
0 i4 n9 k! s& [; g, J' Z9 _6 @0 V - 18 => array('id' => 18, 'pid' => 16, 'name' => '义源村'),
9 e# K7 M; W# @+ E% k - 19 => array('id' => 19, 'pid' => 16, 'name' => '上坝村'),
+ V' f6 j2 b$ i - );9 H( J( _0 }& `4 p) k# L
- echo "<pre>";
( o$ l2 O. s n$ C( N; \9 Z - print_r(genTree5($items));: W0 g6 A0 [; S& M* ?; b
- print_r(genTree9($items));
! w) k; J: n) s7 `+ z% Q9 Z - - I; R& J6 q* m/ n& V
- //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
: F5 m3 y1 U: e0 S4 e$ I$ y3 ` - /*
* r, C$ c+ j- x8 B# K' w8 _6 M - Array$ u! J) Z3 p% E* x1 y
- (9 S! m; E* w+ f
- [0] => Array
4 W! S/ E( h. V$ S - (# g8 B" j+ ^3 Q8 Y, \: ?
- [id] => 1
) ^) d% \8 |1 A; ?$ t6 R' Y - [pid] => 0( C& R7 A0 c$ E% I* E
- [name] => 江西省: h1 j. X/ D4 k
- [son] => Array
, ]5 t1 [8 n! C# `9 `% f/ M - ( p3 j: w1 F4 d2 |! g: w, S
- [0] => Array9 j( k0 j7 y8 X% n' c/ J
- (# A M( Q9 S8 a8 \) P k2 X' A" B
- [id] => 38 o, o: ?2 y/ _% E q
- [pid] => 1
9 V9 S+ b+ p: D& @! F - [name] => 南昌市/ k, a0 F" b+ l, Q+ ^* W' v! ]. S
- )
' O/ J. f8 Q P y* Z1 a" ? -
; A5 ?* A/ |" a4 P3 J - [1] => Array
1 t& T, \$ Z. }/ a' J' Z - (
t5 z4 ^( K1 L( E6 z# C4 n" \ - [id] => 13
( a T1 j! C1 m5 h& Z5 f+ | - [pid] => 1
b4 m# b% x: I - [name] => 赣州市# |9 }& `" J% c
- [son] => Array
5 j3 Q& X. ~% s8 {% x4 d, S - (" U* s$ o/ b9 C/ P7 j% R) c
- [0] => Array" s+ U7 Z! ?; y- C, N- u0 v
- (( x2 e/ v! N( L6 v) z: T6 r. V1 }. T
- [id] => 14
6 J; u+ v `4 H, |7 E$ w7 n4 y - [pid] => 137 z' u, ]1 d% @4 y7 D5 y6 \
- [name] => 赣县
* j$ d4 B+ B, O - [son] => Array
$ x. w( e q2 m6 }4 T4 m - (8 G* k4 X' L/ F- C0 f2 g5 ]$ d
- [0] => Array
2 T; v, V: ]5 |* ^& w6 T - (
0 X7 c/ d" F! V - [id] => 16
4 p, t% B0 l. Y! j, s - [pid] => 14 {, M8 {7 g4 T- D& Q
- [name] => 茅店镇
9 R; e3 v/ y+ M5 S9 X; | - [son] => Array
4 {6 h9 {# Y( |8 p" [2 r - (
6 T. X: t' l& A$ H4 J3 y4 I0 N - [0] => Array" p1 {* {% |8 f4 J. r- M
- (
5 h6 u# ?3 S2 I% d- w- K3 V R. e - [id] => 180 V# w$ y. v. }( H2 Y( t( D4 A
- [pid] => 166 m: Q. F8 b- L7 z- m% Y' d
- [name] => 义源村
$ f8 \1 k- i6 N, U( X$ l, l - )
% Z8 U* _& H3 q" r -
& b- o l, z8 [" \/ [ - [1] => Array0 \# ?+ i1 I m. N4 U+ O6 |
- (2 U ?$ i# {$ b: {1 {& i/ t
- [id] => 195 o* r2 v% k1 ~5 X
- [pid] => 16
# B) @, @1 a4 ^# R3 g% G - [name] => 上坝村6 | P) W3 ^+ k! H Z
- )
# {% m h# C' z3 _2 ^$ l' e - # r8 Q) h# \' p) I' |
- ); p; P# E0 _; t" T& H
- 2 C& B8 w1 W7 Y/ x' _0 ?1 `
- )- X, P4 @- Z; \+ @$ c
-
* B3 k" N1 e9 O" t$ [ - [1] => Array
" o/ d6 e1 O, w8 j2 {* ]; M - (( L$ E* w S7 Z( ~# v! I. z
- [id] => 176 P3 B4 M; a, I
- [pid] => 144 n" ]$ y; \8 d2 u. U( H
- [name] => 大田乡
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9 {2 E( m& C7 ]) x3 b5 B; y - [1] => Array
1 ~3 Q4 t# W1 O2 _( g - (
7 j3 a4 p4 N1 ^% N* q% @. z! x9 T6 H - [id] => 15: e" p- P+ d0 C% B4 `
- [pid] => 13
$ j2 E8 G# h9 S9 w4 { - [name] => 于都县; K( ^: Q' Z# p
- ) Y5 Q3 y/ l- A4 @7 G t& y+ ?: P. }
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-
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4 P- q% c& u5 U/ t( `( V3 |( y - [id] => 24 o( o5 K& d, }5 `4 a* Z
- [pid] => 0) a# [/ q! E7 E
- [name] => 黑龙江省
' A1 Z4 N6 f3 F& B5 Y% c - [son] => Array6 A; B* m# i0 J9 p
- (
3 l2 I" X2 L4 k! u' q - [0] => Array* h# w. m1 {" u h
- (
8 P6 S3 {8 A3 b; i - [id] => 4' J2 ~, b6 P3 {2 f8 k Z
- [pid] => 2
" i, N( B( I! D; V7 W - [name] => 哈尔滨市
* N6 j/ }" n% }3 T - [son] => Array8 h( O- M' h* Q* K8 D! C
- (
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- (
* V. `, d4 j8 b4 R( P - [id] => 6
& O2 B+ M2 A$ b - [pid] => 49 I7 L p ~/ h8 B4 [
- [name] => 香坊区& Q; B- Y* R6 O6 S+ D9 ]
- [son] => Array! Z# s5 L+ g5 M) S. o
- (7 P0 q0 B( b! E: ?
- [0] => Array
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& c9 S6 `$ X5 _) S- w; [* L - [id] => 8
9 Q; s* X$ [ G3 b3 Y - [pid] => 6; g1 [+ s+ \6 Y8 H
- [name] => 和兴路
1 {8 u" ?! \# h - [son] => Array6 G5 t: t8 U5 N% y& g
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- [0] => Array( e5 T8 l8 r8 a& T% D, k- O
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! E6 |; l3 q) I' x* p. k - [id] => 10" E3 e& J2 n, c% g1 v/ M& ~0 b, u' O
- [pid] => 8
5 X: r! E$ E+ o! t, H5 u( T - [name] =>
" K6 S9 g; T9 m, G - 东北林业大学
6 t) p8 d: ]. X, ?& G; r - )) A4 S0 ~3 s& c! R( W# G$ R
-
4 a. g) @) K% l. c; l/ R1 y* |$ c - [1] => Array
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- [id] => 12
1 o+ }4 g+ T& m6 c' n2 v - [pid] => 8
$ A" N" K. |) q - [name] =>
5 m6 j! O) y% C& z2 t: n v( c - 哈尔滨师范大学/ e& q" @+ e* ]$ H
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- [id] => 75 v9 E* A, Z; \& D+ L
- [pid] => 4" `! i1 w" g X7 S! [, ]1 v/ A
- [name] => 南岗区9 N2 b4 s. m6 S. I3 k
- [son] => Array
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* Z4 f" B2 x! [ - [id] => 9
* s: Q" _ ]3 U4 B) S O1 c - [pid] => 7/ s0 E, g. A1 M/ [+ ?$ j( @9 y+ Y
- [name] => 西大直街- z0 B* b1 i9 ~1 Y! X/ @) R
- [son] => Array
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* y0 R$ W0 V1 B- V3 D f - [0] => Array. {' ]- j/ T$ t# H$ A
- (' p9 E1 S* l' l% F% D
- [id] => 11
9 }( @7 `. w" L' ?5 ~5 L - [pid] => 94 F2 V) k( A8 a& M2 K
- [name] => 8 `- S7 n: D4 {# O0 x+ p
- 哈尔滨工业大学- N+ Z, c2 \/ Z" h. k
- )
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- [1] => Array
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- [id] => 52 S5 m7 ?# c* V1 S& V8 M
- [pid] => 2
2 _- [6 H% J; V! y5 C. k' _ - [name] => 鸡西市
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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。( \( P: d1 ]! X N) L$ N! h' C: T
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