Php paging class 2

Php paging class 2


Class SubPages {


Private $ each_disNums; // Number of Entries displayed on each page

Private $ nums; // The total number of items.

Private $ current_page; // the currently selected page

Private $ sub_pages; // The number of pages displayed each time

Private $ pageNums; // total number of pages

Private $ page_array = array (); // used to construct an array of pagination

Private $ subPage_link; // The link of each page

Private $ subPage_type; // type of the display page

/*

_ Construct is the SubPages Constructor used to automatically run classes when they are created.

@ $ Each_disNums number of entries per page

@ Nums total number of entries

@ Current_num the selected page

@ Sub_pages the number of pages displayed each time

@ SubPage_link: the link of each page

@ SubPage_type: type of the display page


Normal paging mode when @ subPage_type = 1

Example: a total of 4523 records are displayed. 10 records are displayed on each page. Currently, page 1/453 [Homepage] [Previous Page] [Next Page] [last page]

Classic paging style when @ subPage_type = 2

Example: current page 1/453 [Homepage] [Previous Page] 1 2 3 4 5 6 7 8 9 10 [Next Page] [last page]

*/

Function _ construct ($ each_disNums, $ nums, $ current_page, $ sub_pages, $ subPage_link, $ subPage_type ){

$ This-> each_disNums = intval ($ each_disNums );

$ This-> nums = intval ($ nums );

If (! $ Current_page ){

$ This-> current_page = 1;

} Else {

$ This-> current_page = intval ($ current_page );

}

$ This-> sub_pages = intval ($ sub_pages );

$ This-> pageNums = ceil ($ nums/$ each_disNums );

$ This-> subPage_link = $ subPage_link;

$ This-> show_SubPages ($ subPage_type );

// Echo $ this-> pageNums. "--". $ this-> sub_pages;

}



/*

_ Destruct: a destructor called when the class is not in use. This function is used to release resources.

*/

Function _ destruct (){

Unset ($ each_disNums );

Unset ($ nums );

Unset ($ current_page );

Unset ($ sub_pages );

Unset ($ pageNums );

Unset ($ page_array );

Unset ($ subPage_link );

Unset ($ subPage_type );

}


/*

The show_SubPages function is used in the constructor. And used to determine what the page looks like

*/

Function show_SubPages ($ subPage_type ){

If ($ subPage_type = 1 ){

$ This-> subPageCss1 ();

} Elseif ($ subPage_type = 2 ){

$ This-> subPageCss2 ();

}

}



/*

The function used to initialize the array that creates pagination.

*/

Function initArray (){

For ($ I = 0; $ I <$ this-> sub_pages; $ I ++ ){

$ This-> page_array [$ I] = $ I;

}

Return $ this-> page_array;

}



/*

Construct_num_Page this function is used to construct display entries

Even if: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10]

*/

Function construct_num_Page (){

If ($ this-> pageNums <$ this-> sub_pages ){

$ Current_array = array ();

For ($ I = 0; $ I <$ this-> pageNums; $ I ++ ){

$ Current_array [$ I] = $ I + 1;

}

} Else {

$ Current_array = $ this-> initArray ();

If ($ this-> current_page <= 3) {//-2 2nd highlighted on the left

For ($ I = 0; $ I <count ($ current_array); $ I ++ ){

$ Current_array [$ I] = $ I + 1;

}

} Elseif ($ this-> current_page <= $ this-> pageNums & $ this-> current_page> $ this-> pageNums-$ this-> sub_pages + 1 ){

For ($ I = 0; $ I <count ($ current_array); $ I ++ ){

$ Current_array [$ I] = ($ this-> pageNums)-($ this-> sub_pages) + 1 + $ I;

}

} Else {

For ($ I = 0; $ I <count ($ current_array); $ I ++ ){

$ Current_array [$ I] = $ this-> current_page-3 + $ I; // 2nd highlight on the left of-2

}

}

}



Return $ current_array;

}


/*

Construct normal mode paging

A total of 4523 records are displayed. 10 records are displayed on each page. Currently, page 1/453 [Homepage] [Previous Page] [Next Page] [last page]

*/

Function subPageCss1 (){

$ SubPageCss1Str = "";

$ SubPageCss1Str. = "total". $ this-> nums. "records ,";

$ SubPageCss1Str. = "displayed on each page". $ this-> each_disNums ,";

$ SubPageCss1Str. = "current section". $ this-> current_page. "/". $ this-> pageNums. "page ";

If ($ this-> current_page> 1 ){

$ FirstPageUrl = $ this-> subPage_link. "1 ";

$ PrewPageUrl = $ this-> subPage_link. ($ this-> current_page-1 );

$ SubPageCss1Str. = "[Homepage]";

$ SubPageCss1Str. = "[previous page]";

} Else {

$ SubPageCss1Str. = "[Homepage]";

$ SubPageCss1Str. = "[previous page]";

}



If ($ this-> current_page <$ this-> pageNums ){

$ LastPageUrl = $ this-> subPage_link. $ this-> pageNums;

$ NextPageUrl = $ this-> subPage_link. ($ this-> current_page + 1 );

$ SubPageCss1Str. = "[Next Page]";

$ SubPageCss1Str. = "[last page]";

} Else {

$ SubPageCss1Str. = "[Next Page]";

$ SubPageCss1Str. = "[last page]";

}



Echo $ subPageCss1Str;



}



/*

Create pagination in classic mode

Current page 1/453 [Homepage] [Previous Page] 1 2 3 4 5 6 7 8 9 10 [Next Page] [last page]

*/

Function subPageCss2 (){

$ SubPageCss2Str = "";

$ SubPageCss2Str. = "current section". $ this-> current_page. "/". $ this-> pageNums. "page ";





If ($ this-> current_page> 1 ){

$ FirstPageUrl = $ this-> subPage_link. "1 ";

$ PrewPageUrl = $ this-> subPage_link. ($ this-> current_page-1 );

$ SubPageCss2Str. = "[Homepage]";

$ SubPageCss2Str. = "[previous page]";

} Else {

$ SubPageCss2Str. = "[Homepage]";

$ SubPageCss2Str. = "[previous page]";

}



$ A = $ this-> construct_num_Page ();

For ($ I = 0; $ I <count ($ a); $ I ++ ){

$ S = $ a [$ I];

If ($ s ==$ this-> current_page ){

$ SubPageCss2Str. = "[". $ s. "]";

} Else {

$ Url = $ this-> subPage_link. $ s;

$ SubPageCss2Str. = "[". $ s. "]";

}

}



If ($ this-> current_page <$ this-> pageNums ){

$ LastPageUrl = $ this-> subPage_link. $ this-> pageNums;

$ NextPageUrl = $ this-> subPage_link. ($ this-> current_page + 1 );

$ SubPageCss2Str. = "[Next Page]";

$ SubPageCss2Str. = "[last page]";

} Else {

$ SubPageCss2Str. = "[Next Page]";

$ SubPageCss2Str. = "[last page]";

}

Echo $ subPageCss2Str;

}

}

?>

Code:


// Require_once ("SubPages. php ");

// Number of Entries displayed per page

$ Page_size = 20;

// Total number of entries

$ Nums = 1024;

// Number of pages displayed each time

$ Sub_pages = 10;

// Obtain the current page

$ PageCurrent = $ _ GET ["p"];

// If (! $ PageCurrent) $ pageCurrent = 1;


$ SubPages = new SubPages ($ page_size, $ nums, $ pageCurrent, $ sub_pages, "a. php? P = ", 2 );

?>


If (empty ($ _ GET ["p"])
{
$ PageCurrent2 = 0; // limit starts from 0
$ Page_size2 = 3; // ends at 2. three pieces of data are displayed on each page.
}
Else
{$ PageCurrent2 = $ _ GET ["p"] * 3-3; // calculate the first parameter at the beginning of each page.
$ Page_size2 = $ pageCurren2 + 3; // Three data entries are displayed on each page.
}
$ SQL = "select * from art ";
$ SQL = sprintf ("% s limit % d, % d", $ SQL, $ pageCurrent2, $ page_size2 );
$ Ni = new Mysql ("127.0.0.1", "root", "123", "school ");

Echo"
";
$ Sql2 = "select * from art ";
$ Nums = $ ni-> Number ($ sql2 );
// Echo "QQ". $ nums;




$ Result = $ ni-> Query ($ SQL );
While ($ rows = $ ni-> fetch_array ($ result ))
{
Echo"
";
Echo $ rows ['title'];
Echo"
";


}
$ Page_size = 3;
$ Sub_pages = 10;
$ PageCurrent = $ _ GET ["p"];
$ SubPages = new SubPages ($ page_size, $ nums, $ pageCurrent, $ sub_pages, "a. php? P = ", 2 );


?>