How to write a simple and easy to use php paging class
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The copy code is as follows:
Class Page {
/ / the number of pages displayed per page in the paging column
Public $rollPage = 6
/ / parameters to be taken when the number of pages jumps
Public $parameter
/ / the default list shows the number of rows per page
Public $listRows = 20
/ / number of starting lines
Public $firstRow
/ / Total number of pages paged
Protected $totalPages
/ / Total number of rows
Protected $totalRows
/ / current number of pages
Protected $nowPage
/ / the total number of pages in paged columns
Protected $coolPages
/ / customization of paging display
Protected $config = array (
'redirect'= > false
'header'= >' record'
'prev'= > 'previous page'
'next'= >' next page'
'first'= >'1'
'last'= >' Last Page'
'theme'= >' upPage% first% prePage% linkPage% nextPage% downPage% of all totalPage% pages')
/ / default paging variable name
Protected $varPage
/ * *
+
* Architecture function
+
* @ access public
+
* @ param array $totalRows total number of records
* @ param array $listRows displays the number of records per page
* @ param array $parameter paging jump parameters
+
, /
Public function _ _ construct ($totalRows,$listRows='',$parameter='') {
$this- > totalRows = $totalRows
$this- > parameter = $parameter
$this- > varPage = C ('VAR_PAGE')? C ('VAR_PAGE'):' p'
If (! empty ($listRows)) {
$this- > listRows = intval ($listRows)
}
$this- > totalPages = ceil ($this- > totalRows/$this- > listRows); / / Total number of pages
$this- > coolPages = ceil ($this- > totalPages/$this- > rollPage)
/ / $_ GET verification
$this- > nowPage = intval ($_ GET [$this- > varPage])
$this- > nowPage = $this- > nowPage > 0? $this- > nowPage: 1
If (! empty ($this- > totalPages) & & $this- > nowPage > $this- > totalPages) {
$this- > nowPage = $this- > totalPages
}
$this- > firstRow = $this- > listRows* ($this- > nowPage-1)
}
Public function setConfig ($name,$value) {
If (isset ($this- > config [$name])) {
$this- > config [$name] = $value
}
}
/ * *
+
* display output in paging
+
* @ access public
+
, /
Public function show () {
If (0 = $this- > totalRows) return''
/ / processing parameters
$p = $this- > varPage
$url = $_ SERVER ['REQUEST_URI']. (strpos ($_ SERVER [' REQUEST_URI'],'?'): "?"). $this- > parameter
$parse = parse_url ($url)
If (isset ($parse ['query'])) {
Parse_str ($parse ['query'], $params)
Unset ($params [$p])
$url = $parse ['path'].'?. Http_build_query ($params)
}
/ * paging logic * /
/ / when the total is less than the number of pages displayed
If ($this- > totalPages rollPage) {
$start = 1
$end = $this- > totalPages
}
Else {
/ /
If ($this- > nowPage rollPage-1) {
$start = 1
$end = $this- > rollPage
$islast = true
}
Else if ($this- > nowPage > $this- > totalPages-$this- > rollPage + 1) {
$start = $this- > totalPages-($this- > rollPage-1)
$end = $this- > totalPages
$isfirst = true
}
Else {
/ / floating number
$size = floor ($this- > rollPage / 2)
$start = $this- > nowPage-$size
$end = $this- > nowPage + $size
$isfirst = true
$islast = true
}
}
/ / turn the page string up and down
$upRow = $this- > nowPage-1
$downRow = $this- > nowPage + 1
/ * assemble HTML * /
/ /
< 1... ...last >If ($isfirst) {
$theFirst = ". $this- > config ['first']."
}
If ($islast) {
$theEnd = ". $this- > config ['last']."
}
If ($upRow > 0) {
$upPage = ". $this- > config ['prev']."
}
If ($downRow totalPages) {
$downPage = ". $this- > config ['next']."
}
If ($start==3) {
$linkPage. = "2"
}
If ($start > = 4) {
$linkPage. = "2..."
}
/ / 1 2 3 4 5
For ($itemized startplace inowPage) {
$linkPage. = ". $I."
} else {
$linkPage. = ". $I."
}
If ($i==$end) {
If ($itotalRows) {
$linkPage. = "..."
}
}
}
$pageStr = str_replace (
Array ('% header%','%nowPage%','%totalRow%','%totalPage%','%upPage%','%first%','%prePage%','%linkPage%','%nextPage%','%downPage%','%end%')
Array ($this- > config ['header'], $this- > nowPage,$this- > totalRows,$this- > totalPages,$upPage,$theFirst,$prePage,$linkPage,$nextPage,$downPage,$theEnd), $this- > config [' theme'])
/ / display mode ordinary false with jump ture
If (! empty ($this- > config ['redirect'])) {
$html = $pageStr
} else {
/ / pass parameters
If ($this- > totalPages > 1) {
$redirect = "to page"
If ($params) {
Foreach ($params as $k = > $v) {
$string. = "
}
$redirect = $redirect. $string. ''
} else {
$redirect = $redirect. ''
}
}
/ / generate Html string
$html = $pageStr. $redirect
}
Return $html
}
}
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