本文实例为大家分享了php分页类的具体代码，供大家参考，具体内容如下
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
<?php
/*核心:首页、上一页、下一页、尾页的url*/
/*超全局$_SERVER*/
$page = new Page(5,60);
var_dump($page->allUrl());
class Page{
// 每页显示的个数
protected $number;
// 一共有多少数据
protected $totalCount;
// 当前页
protected $page;
// url
protected $url;
public function __construct($number,$totalCount){
$this->number= $number;
$this->totalCount = $totalCount;
//得到总页数
$this->totalPage = $this->getTotalPage();
//得到当前页数
$this->page = $this->getPage();
//得到URL
$this->url = $this->getUrl();
echo $this->url;
}
/*得到总页数并向上取整*/
protected function getTotalPage(){
return ceil($this->totalCount/$this->number);
}
/**/
protected function getPage(){
if (empty($_GET['page'])){
$page=1;
}elseif ($_GET['page'] > $this->totalPage){
$page = $this->totalPage;
}elseif ($_GET["page"]<1){
$page = 1;
}else{
$page = $_GET['page'];
}
return $page;
}
protected function getUrl(){
//得到协议名
$scheme = $_SERVER['REQUEST_SCHEME'];
//得到主机名
$host= $_SERVER['SERVER_NAME'];
//得到端口号
$port = $_SERVER['SERVER_PORT'];
//得到路径和请求字符串
$url = $_SERVER['REQUEST_URI'];
/*中间做处理,要将page=5等这种字符串拼接URL
中，所以如果原来的url中有page这个参数，我们首先
需要将原来的page参数给清空*/
$urlArray = parse_url($url);
// var_dump($urlArray);
$path = $urlArray['path'];
if (!empty($urlArray['query'])){
//将query中的值转化为数组
parse_str($urlArray['query'],$array);
//如果他有page就将它删掉
unset($array['page']);
//将关联数组转化为query
$query = http_build_query($array);
//不为空的话就与path连结
if ($query != ''){
$path = $path.'?'.$query;
}
}
return 'http://'. $host.':'.$port.$path;
}
protected function setUrl($str){
if (strstr($this->url, '?')){
$url = $this->url.'&'.$str;
}else{
$url = $this->url.'?'.$str;
}
return $url;
}
/*所有的url*/
public function allUrl(){
return [
'first' => $this->first(),
'next' => $this->next(),
'prev'=> $this->prev(),
'end'=> $this->end(),
];
}
/*首页*/
public function first(){
return $this->setUrl('page=1');
}
/*下一页*/
public function next(){
//根据当前page得带下一页的页码
if ($this->page+1 > $this->totalPage) {
$page = $this->totalPage;
}else{
$page = $this->page+1;
}
return $this->setUrl('page='.$page);
}
/*上一页*/
public function prev(){
//根据当前page得带下一页的页码
if ($this->page - 1 < 1) {
$page = 1;
}else{
$page = $this->page-1;
}
return $this->setUrl('page='.$page);
}
/*尾页*/
public function end(){
return $this->setUrl('page='.$this->totalPage);
}
/*limit 0,5*/
public function limit(){
$offset = ($this->page-1)*$this->number;
return $offset.','.$this->number;
}
}
|
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。