PHP generic pagination page. php [Google pagination]

Page. php CopyCode The Code is as follows: <? PHP

/**
** Generic PHP paging class. (Like Google style)
** You only need to provide two parameters: the total number of records and the number of records displayed on each page. (Detailed instructions are provided ..)
** You do not need to specify a URL.ProgramGenerate. It is convenient for querying results by page.
** The form is submitted using the get method, which ensures that URL parameters are not lost in operations such as query and deletion.
**/

Class pager {
// IE Address Bar
VaR $ URL;
// The total number of records
VaR $ countall;
// Total number of pages
VaR $ page;
// Pagination numeric link
VaR $ thestr;
// Home page and previous page
VaR $ backstr;
// Link to the last page and next page
VaR $ nextstr;
// Current page number
VaR $ PG;
// Number of records displayed per page
VaR $ countlist;
// Flip Style
VaR $ style;
// Constructor. This function is automatically executed when the class is instantiated.
Function Pager ($ countall, $ countlist, $ style = "page "){
// When the number of records is different from the number displayed on each page, add 1 after the remaining number of pages
$ This-> countall = $ countall;
$ This-> countlist = $ countlist;
$ This-> style = $ style;
If ($ this-> countall % $ this-> countlist! = 0 ){
$ This-> page = sprintf ("% d", $ this-> countall/$ this-> countlist) + 1;
} Else {
$ This-> page = $ this-> countall/$ this-> countlist;
}

$ This-> PG =$ _ Get ["PG"];
// Ensure that PG starts from page 1st if not specified
If (! Ereg ("^ [1-9] [0-9] * $", $ this-> PG) | empty ($ this-> PG )){
$ This-> Pg = 1;
}
// The page number exceeds the maximum value.
If ($ this-> PG >$ this-> page ){
$ This-> Pg = $ this-> page;
}
// Obtain the current URL. For specific implementation, see the function entity at the bottom.
$ This-> url = Pager: geturl ();
// Replace the page number with the correct format
If (isset ($ _ Get ["PG"]) & $ _ Get ["PG"]! = $ This-> PG ){
$ This-> url = str_replace ("? Pg = ". $ _ Get [" PG "],"? Pg = $ this-> PG ", $ this-> URL );
$ This-> url = str_replace ("& Pg = ". $ _ Get ["PG"], "& Pg = $ this-> PG", $ this-> URL );
}
// Generate a page with numbers such as 12345.
If ($ this-> page <= 10 ){
For ($ I = 1; $ I <$ this-> page + 1; $ I ++ ){
$ This-> thestr = $ this-> thestr. Pager: makepg ($ I, $ this-> PG );
}
} Else {
If ($ this-> PG <= 5 ){
For ($ I = 1; $ I <10; $ I ++ ){
$ This-> thestr = $ this-> thestr. Pager: makepg ($ I, $ this-> PG );
}
} Else {
If (6 + $ this-> PG <= $ this-> page ){
For ($ I = $ this-> pg-4; $ I <$ this-> PG + 6; $ I ++ ){
$ This-> thestr = $ this-> thestr. Pager: makepg ($ I, $ this-> PG );
}
} Else {
For ($ I = $ this-> pg-4; $ I <$ this-> page + 1; $ I ++ ){
$ This-> thestr = $ this-> thestr. Pager: makepg ($ I, $ this-> PG );
}

}
}
}
// Generate text links such as the top and bottom pages
$ This-> backstr = Pager: gotoback ($ this-> PG );
$ This-> nextstr = Pager: gotonext ($ this-> PG, $ this-> page );
// Echo ("Total ". $ this-> countall. "entries, per page ". $ this-> countlist. "entries, total ". $ this-> page. "page ". $ this-> backstr. $ this-> thestr. $ this-> nextstr );
}
// Auxiliary function for generating digital Paging
Function makepg ($ I, $ PG ){
If ($ I = $ PG ){
Return "<font class = '". $ this-> style. "'>". $ I. "</font> ";
} Else {
Return "<a href = ". pager: replacepg ($ this-> URL, 5, $ I ). "Class = '". $ this-> style. "'> <u> ". $ I. "</u> </a> ";
}
}
// Function for generating information such as the previous page
Function gotoback ($ PG ){
If ($ pg-1> 0 ){
Return $ this-> gotoback = "<a href = ". pager: replacepg ($ this-> URL, 3, 0 ). "Class = '". $ this-> style. "'> homepage </a> <a href = ". pager: replacepg ($ this-> URL, 2, 0 ). "Class = '". $ this-> style. "'> previous page </a> ";
} Else {
Return $ this-> gotoback = "<SPAN class = '". $ this-> style. "'> Home page </span> ";
}
}
// Function for generating information such as the next page
Function gotonext ($ PG, $ page ){
If ($ PG <$ page ){
Return "<a href = ". pager: replacepg ($ this-> URL, 1, 0 ). "Class = '". $ this-> style. "'> next page </a> <a href = ". pager: replacepg ($ this-> URL, 4,0 ). "Class = '". $ this-> style. "'> last page </a> ";
} Else {
Return "<SPAN class = '". $ this-> style. "'> last page of the next page </span> ";
}
}
// Process the $ PG method in the URL, which is used to automatically generate Pg = x
Function replacepg ($ URL, $ flag, $ I ){
If ($ flag = 1 ){
$ Temp_pg = $ this-> PG;
Return str_replace ("PG =". $ temp_pg, "PG =". ($ this-> PG + 1), $ URL );
} Else if ($ flag = 2 ){
$ Temp_pg = $ this-> PG;
Return str_replace ("PG =". $ temp_pg, "PG =". ($ this-> pg-1), $ URL );
} Else if ($ flag = 3 ){
$ Temp_pg = $ this-> PG;
Return str_replace ("PG =". $ temp_pg, "PG = 1", $ URL );
} Else if ($ flag = 4 ){
$ Temp_pg = $ this-> PG;
Return str_replace ("PG =". $ temp_pg, "PG =". $ this-> page, $ URL );
} Else if ($ flag = 5 ){
$ Temp_pg = $ this-> PG;
Return str_replace ("PG =". $ temp_pg, "PG =". $ I, $ URL );
} Else {
Return $ URL;
}
}
// Obtain the current URL
Function geturl (){
$ Url = "http: //". $ _ server ["http_host"];
If (isset ($ _ server ["request_uri"]) {
$ URL. = $ _ server ["request_uri"];
} Else {
$ URL. = $ _ server ["php_self"];
If (! Empty ($ _ server ["QUERY_STRING"]) {
$ URL. = "? ". $ _ Server [" QUERY_STRING "];
}
}
// Add Pg = X to the current URL
If (! Ereg ("(Pg = | Pg =)", $ URL )){
If (! Strpos ($ URL ,"? ")){
$ Url = $ URL ."? Pg = 1 ";
} Else {
$ Url = $ URL. "& Pg = 1 ";
}
}
Return $ URL;
}
}
?>