PHP 分页类

1//用法1：
2echo Page::instance(32,10,5,5,'show?p=','&lang=zh')->show();
3
4//用法2：
5echo Page::instance()->show(32,10,5,5,'show?p=','&lang=zh');
6
7//用法3：
8$page = Page::instance();
9$page->set_config('theme', ' %first% %up% %prev% %page% %next% %down% %last% ');
10echo $page->show(32,10,5,5,'show?p=','&lang=zh');
11
12//用法4：
13$page = Page::instance(32,10,5,5,'show?p=','&lang=zh');
14echo $page->get('page_theme');
15echo $page->get('next');//获取下一页，这里显示有设置的主题
16
17//用法5：
18$page = Page::instance();
19$page->set(32,10,5,5,'show?p=','&lang=zh');
20echo $page->get('page_theme');
21echo $page->get('next');//获取下一页，这里显示有设置的主题
22
23//注：该类不能对已设数据进行覆盖，比如32,10这些在同一次的执行中不能被其他数据覆盖。如果要进行覆盖，可将已设数据更改为NULL
24
25
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27
28
29<?php
30
31
32
33/*
34 *
35 * @ID:      分页类
36 *
37 * @auther:  欣儿
38 *
39 * @time:    2014/02/20
40 *
41 * @web:     http://my.oschina.net/xinger
42 *
43**/
44
45
46
47class Page {
48
49	public $left 	= '%';
50	public $right 	= '%';
51	public $first 	= 1 ;
52	
53	public $count;
54	public $perlogs;
55	public $page;
56	public $roll_page;
57	public $url;
58	public $suffix;
59	
60	public $total;//总页数
61	public $prev;//上一页
62	public $next;//下一页
63	public $up;//上大翻页
64	public $down;//下大翻页
65
66	protected $now_page;
67	protected $other_page;
68	protected $prev_page;
69	protected $next_page;
70	protected $up_page;
71	protected $down_page;
72	protected $first_page;
73	protected $last_page;
74		
75	protected $var = array();//暂存数据
76	protected $config = array(
77		'other_theme'=>'<span class="current"><a href="%page_url%">%i%</a></span>',//页面页
78		'now_theme'=>'<span class="current_show"><a href="%now_url%">%i%</a></span>',//当前页 %page%为other和now的组合
79
80		'prev_theme'=>'<span class="current_pre"><a href="%prev_url%" title="上一页"><上一页</a></span>',//url可在theme单独使用
81		'next_theme'=>'<span class="current_next"><a href="%next_url%" title="下一页">下一页></a></span>',
82		'up_theme'=>'<span class="current_up"><a href="%up_url%" title="<<"><<</a></span>',//
83		'down_theme'=>'<span class="current_down"><a href="%down_url%" title=">>">>></a></span>',
84		'first_theme'=>'<span class="current_start"><a href="%first_url%" title="首页">首页</a></span>',
85		'last_theme'=>'<span class="current_end"><a href="%last_url%" title="尾页">尾页</a></span>',
86
87		'prev_end_theme'=>'',//不显示的时候总是显示时显示的主题
88		'next_end_theme'=>'',
89		'up_end_theme'=>'',//
90		'down_end_theme'=>'',
91		'first_end_theme'=>'',
92		'last_end_theme'=>'',
93		
94		'theme'=>' %first% %up% %prev% %page% %next% %down% %last% ',//显示样式 共有 %count% 条数据, 第 %now_page% / %total% 页 %prev_always% %up_always% %down_always% 
95	);
96	
97	public function __construct($count = NULL, $perlogs = NULL, $now_page = NULL, $roll_page = NULL, $url = NULL, $suffix = NULL) {
98		$this->set($count, $perlogs, $now_page, $roll_page, $url, $suffix);
99	}
100
101	public static function instance($count = NULL, $perlogs = NULL, $now_page = NULL, $roll_page = NULL, $url = NULL, $suffix = NULL) {
102		static $var;
103		if(isset($var)) return $var;
104		
105		$var = new self($count, $perlogs, $now_page, $roll_page, $url, $suffix);
106		return $var;
107	}
108	//显示
109	public function show($count = NULL, $perlogs = NULL, $now_page = NULL, $roll_page = NULL, $url = NULL, $suffix = NULL) {		
110		$this->set($count, $perlogs, $now_page, $roll_page, $url, $suffix);
111		$this->compile();
112		
113		$page = $this->var['page_theme'];	
114		return $page;
115	
116	}
117	//获取返回信息
118	public function get($key = NULL) {
119		$this->compile();
120		if(NULL !== $key && isset($this->var[$key])) return $this->var[$key];
121			return $this->var;
122	}
123	//设置: 条目总数, 每页显示条数目, 当前页码, 当前页码的前后页数, 页码的地址, 地址其他项
124	public function set($count = NULL, $perlogs = NULL, $now_page = NULL, $roll_page = NULL, $url = NULL, $suffix = NULL) {
125		if (NULL === $this->count) 		$this->count 		= $this->var['count'] 		= $count;
126		if (NULL === $this->perlogs) 	$this->perlogs		= $this->var['perlogs'] 	= $perlogs;
127		if (NULL === $this->page) 		$this->page 		= $this->var['now_page'] 	= $now_page;
128		if (NULL === $this->roll_page) 	$this->roll_page 	= $this->var['roll_page'] 	= $roll_page;//与当前页左右相距的页数
129		if (NULL === $this->url) 		$this->url 			= $this->var['url'] 		= $url;
130		if (NULL === $this->suffix) 	$this->suffix 		= $this->var['suffix'] 		= $suffix;
131	}
132
133    public function set_config($name, $value = NULL) {
134        if (isset($this->config[$name])) {
135            $this->config[$name]    =   $value;
136            return true;
137        }
138        return false;
139    }
140	
141    public function get_config($name = NULL) {
142		if (NULL === $name) return $this->config;
143		
144        if (isset($this->config[$name])) {
145            return $this->config[$name];
146        } 
147		
148		return false;
149    }
150	
151	public function get_count() {
152		return $this->count;
153	}
154	
155	public function get_perlogs() {
156		return $this->perlogs;
157	}
158	
159	public function get_page() {
160		return $this->page;
161	}
162	
163	public function get_roll_page() {
164		return $this->roll_page;
165	}
166	
167	public function get_url() {
168		return $this->url;
169	}
170	
171	public function get_suffix() {
172		return $this->suffix;
173	}
174	
175	public function get_first() {
176		return $this->first;
177	}
178	
179	protected function get_total() {
180		$this->total = @ceil($this->count / $this->perlogs);
181		return $this->total;
182	}
183	
184	protected function get_prev() {
185		$this->prev = $this->page - 1;
186		return $this->prev;
187	}
188	
189	protected function get_next() {
190		$this->next = $this->page + 1;
191		return $this->next;
192	}
193	
194	protected function get_up($i = 5) {
195		$this->up = $this->page - $i;
196		return $this->up;
197	}
198	
199	protected function get_down($i = 5) {
200		$this->down = $this->page + $i;
201		return $this->down;
202	}
203	
204	protected function get_prev_page($always = false) {
205		if ($always) $this->prev += 1;
206		$this->prev_page = $this->url . $this->prev . $this->suffix;
207		return $this->prev_page;
208	}
209	
210	protected function get_next_page($always = false) {
211		if ($always) $this->next -= 1;
212		$this->next_page = $this->url . $this->next . $this->suffix;
213		return $this->next_page;
214	}
215	
216	protected function get_up_page($always = false) {
217		$roll_page = $this->get_roll_page();
218		$now_page = $this->get_page();
219		$first = $this->get_first();
220		
221		if ($always) {
222			if ($now_page <= $roll_page * 2 && $now_page > $roll_page) {
223				$this->up += $roll_page;
224			} else {
225				$this->up = $first;
226			}
227		}
228		$this->up_page = $this->url . $this->up . $this->suffix;
229		return $this->up_page;
230	}
231	
232	protected function get_down_page($always = false) {
233		$total = $this->get_total();
234		$roll_page = $this->get_roll_page();
235		$now_page = $this->get_page();
236
237		if ($always) {
238			$page = $total - $now_page;
239			if ($page <= $roll_page * 2 && $page >= $roll_page) {
240				$this->down -= $roll_page;
241			} else {
242				$this->down = $total;
243			}
244		}
245		$this->down_page = $this->url . $this->down . $this->suffix;
246		return $this->down_page;
247	}
248	
249	protected function get_first_page() {
250		$this->first_page = $this->url . $this->first . $this->suffix;
251		return $this->first_page;
252	}
253	
254	protected function get_last_page() {
255		$this->last_page = $this->url . $this->last . $this->suffix;
256		return $this->last_page;
257	}
258	
259	protected function get_now_page($i = NULL) {
260		$this->now_page = $this->url . $i . $this->suffix;
261		return $this->now_page;
262	}
263	
264	protected function get_other_page($i = NULL) {
265		$this->other_page = $this->url . $i . $this->suffix;
266		return $this->other_page;
267	}
268	
269	protected function get_prev_theme($always = false) {
270		$total = $this->get_total();
271		$now_page = $this->get_page();
272		$prev = $this->get_prev();
273		$prev_page = ($always === true) ? $this->get_prev_page(true) : $this->get_prev_page();	
274						
275		$prev_always = NULL;	
276		
277		if($prev > 0 && $now_page <= $total) {
278			$prev_always = strtr($this->config['prev_theme'], array($this->left . 'prev_url' . $this->right => $prev_page));
279		}
280		
281		if($prev <= 0 && $always) {
282			if(!empty($this->config['prev_end_theme'])) {
283				$prev_theme = $this->config['prev_end_theme'];
284			} else {
285				$prev_theme = $this->config['prev_theme'];
286			}
287			$prev_always = strtr($prev_theme, array($this->left . 'prev_url' . $this->right => $prev_page));
288		}
289				
290		return $prev_always;
291	}
292	
293	protected function get_next_theme($always = false) {
294		$next = $this->get_next();
295		$total = $this->get_total();
296		$next_page = ($always === true) ? $this->get_next_page(true) : $this->get_next_page();	
297
298		$next_always = NULL;	
299		
300		if($next < $total + 1){
301			$next_always = strtr($this->config['next_theme'], array($this->left . 'next_url' . $this->right => $next_page));
302		}
303		
304		if($next >= $total + 1 && $always){
305			if(!empty($this->config['next_end_theme'])) {
306				$next_theme = $this->config['next_end_theme'];
307			} else {
308				$next_theme = $this->config['next_theme'];
309			}
310			$next_always = strtr($next_theme, array($this->left . 'next_url' . $this->right => $next_page));
311		}
312		
313		return $next_always;
314	}
315	
316	protected function get_up_theme($always = false) {
317		$total = $this->get_total();
318		$roll_page = $this->get_roll_page();
319		$now_page = $this->get_page();
320		$roll_page = $roll_page * 2;
321		$up = $this->get_up($roll_page);
322		$up_page = ($always === true) ? $this->get_up_page(true) : $this->get_up_page();	
323						
324		$up_always = NULL;	
325		
326		if($up > 0 && $now_page <= $total){
327			$up_always = strtr($this->config['up_theme'], array($this->left . 'up_url' . $this->right => $up_page));
328		}
329		
330		if($up <= 0 && $always){
331			if(!empty($this->config['up_end_theme'])){
332				$up_theme = $this->config['up_end_theme'];
333			} else {
334				$up_theme = $this->config['up_theme'];
335			}
336			$up_always = strtr($up_theme, array($this->left . 'up_url' . $this->right => $up_page));
337		}
338		
339		return $up_always;
340	}
341	
342	protected function get_down_theme($always = false) {
343		$total = $this->get_total();
344		$roll_page = $this->get_roll_page();
345		$roll_page = $roll_page * 2;
346		$down = $this->get_down($roll_page);
347		$down_page = ($always === true) ? $this->get_down_page(true) : $this->get_down_page();	
348
349		$down_always = NULL;	
350		
351		if($down < $total + 1){
352			$down_always = strtr($this->config['down_theme'], array($this->left . 'down_url' . $this->right => $down_page));
353		}
354		
355		if($down >= $total + 1 && $always){
356			if(!empty($this->config['down_end_theme'])){
357				$down_theme = $this->config['down_end_theme'];
358			} else {
359				$down_theme = $this->config['down_theme'];
360			}
361			$down_always = strtr($down_theme, array($this->left . 'down_url' . $this->right => $down_page));
362		}
363		
364		return $down_always;
365	}
366	
367	protected function get_page_theme($always = false) {
368		$total = $this->get_total();
369		$now_page = $this->get_page();
370		$roll_page = $this->get_roll_page();
371		
372		$page = NULL;
373
374		for ($i = $now_page - $roll_page;$i <= $now_page + $roll_page && $i <= $total; $i++){
375			if ($i > 0){
376				if ($i == $now_page) {
377					$page .= strtr($this->config['now_theme'], array($this->left . 'page_url' . $this->right => $this->get_now_page($i),$this->left . 'now_url' . $this->right => $this->get_other_page($i),$this->left . 'i' . $this->right => $i));
378				} else {
379					$page .= strtr($this->config['other_theme'], array($this->left . 'page_url' . $this->right => $this->get_now_page($i),$this->left . 'now_url' . $this->right => $this->get_other_page($i),$this->left . 'i' . $this->right => $i));
380				}
381			} 
382		}
383		
384		if ($total <= 1 && $always == false) $page = '';
385				
386		return $page;
387	}
388	
389	protected function get_first_theme($always = false) {
390		$total = $this->get_total();
391		$now_page = $this->get_page();
392		$roll_page = $this->get_roll_page();
393		$first_page = $this->get_first_page();	
394		
395		$first_always = NULL;
396
397		if ($now_page > $roll_page + 1 && $now_page <= $total) {
398			$first_always = strtr($this->config['first_theme'], array($this->left . 'first_url' . $this->right => $first_page));
399		}
400	
401		if ($now_page <= $roll_page + 1 && $always) {
402			if(!empty($this->config['first_end_theme'])) {
403				$first_theme = $this->config['first_end_theme'];
404			} else {
405				$first_theme = $this->config['first_theme'];
406			}
407			$first_always = strtr($first_theme, array($this->left . 'first_url' . $this->right => $first_page));
408		}
409	
410		return $first_always;
411	}
412	
413	protected function get_last_theme($always = false) {
414		$now_page = $this->get_page();
415		$total = $this->get_total();
416		$roll_page = $this->get_roll_page();
417		$last_page = $this->get_last_page();
418
419		$last_always = NULL;
420
421		if ($now_page + $roll_page < $total || $always) {
422			$last_always = strtr($this->config['last_theme'], array($this->left . 'last_url' . $this->right => $last_page));
423		}
424	
425		if ($now_page + $roll_page >= $total && $always) {
426			if(!empty($this->config['last_end_theme'])){
427				$last_theme = $this->config['last_end_theme'];
428			} else {
429				$last_theme = $this->config['last_theme'];
430			}
431			$last_always = strtr($last_theme, array($this->left . 'last_url' . $this->right => $last_page));
432		}
433	
434		return $last_always;
435	}
436	//compile
437	protected function compile() {		
438		$count 		= $this->get_count();
439		$now_page 	= $this->get_page();
440		$roll_page 	= $this->get_roll_page();
441	
442		$total 		= $this->var['total'] 		= $this->last = $this->get_total();
443		$prev_url 	= $this->var['prev_url'] 	= $this->get_prev_page();	
444		$next_url 	= $this->var['next_url'] 	= $this->get_next_page();	
445		$first_url 	= $this->var['first_url'] 	= $this->get_first_page();	
446		$last_url 	= $this->var['last_url'] 	= $this->get_last_page();			
447				
448		$prev 	= $this->var['prev'] 	= $this->get_prev_theme();	
449		$next 	= $this->var['next'] 	= $this->get_next_theme();	
450		$page 	= $this->var['page'] 	= $this->get_page_theme();
451		$up 	= $this->var['up'] 		= $this->get_up_theme();	
452		$down 	= $this->var['down'] 	= $this->get_down_theme();	
453		$first 	= $this->var['first'] 	= $this->get_first_theme();	
454		$last 	= $this->var['last'] 	= $this->get_last_theme();	
455				
456		$prev_always 	= $this->var['prev_always'] 	= $this->get_prev_theme(true);	
457		$next_always 	= $this->var['next_always'] 	= $this->get_next_theme(true);	
458		$page_always 	= $this->var['page_always'] 	= $this->get_page_theme(true);
459		$up_always 		= $this->var['up_always'] 		= $this->get_up_theme(true);	
460		$down_always 	= $this->var['down_always'] 	= $this->get_down_theme(true);	
461		$first_always 	= $this->var['first_always'] 	= $this->get_first_theme(true);	
462		$last_always 	= $this->var['last_always'] 	= $this->get_last_theme(true);	
463				
464		$theme_parse = array(
465			$this->left . 'first' . $this->right => $first,
466			$this->left . 'up' . $this->right => $up,
467			$this->left . 'prev' . $this->right => $prev,
468			$this->left . 'page' . $this->right => $page,
469			$this->left . 'next' . $this->right => $next,
470			$this->left . 'down' . $this->right => $down,
471			$this->left . 'last' . $this->right => $last,
472
473			$this->left . 'first_always' . $this->right => $first_always,
474			$this->left . 'up_always' . $this->right => $up_always,
475			$this->left . 'prev_always' . $this->right => $prev_always,
476			$this->left . 'page_always' . $this->right => $page_always,
477			$this->left . 'next_always' . $this->right => $next_always,
478			$this->left . 'down_always' . $this->right => $down_always,
479			$this->left . 'last_always' . $this->right => $last_always,
480
481			$this->left . 'total' . $this->right => $total,
482			$this->left . 'count' . $this->right => $count,
483			$this->left . 'now_page' . $this->right => $now_page,
484			$this->left . 'roll_page' . $this->right => $roll_page,
485			
486			$this->left . 'prev_url' . $this->right => $prev_url,
487			$this->left . 'next_url' . $this->right => $next_url,
488			$this->left . 'first_url' . $this->right => $first_url,
489			$this->left . 'last_url' . $this->right => $last_url,
490		);
491		
492        $page_theme = $this->var['page_theme'] = strtr($this->config['theme'], $theme_parse);
493		
494		return $page_theme;
495	}
496}
497
498?>