PHP Implementation paging: text pagination and digital paging, _php tutorial

PHP Implementation paging: text pagination and digital paging,

Source: http://www.ido321.com/1086.html

Recently, paging was used in the project. Paging is a feature that is often used, so it is encapsulated in a functional form.

//Split-page loading/*** $pageType Paging Type 1 is the number page 2 is the text paging* $pagetotal, $page, $total and other data can be passed as parameters, or in paging as global variables (recommended)*/functionPaging ($pageType) {Global$pageTotal, $page, $total;if($pageType = = 1) {Echo '';Echo'
 
    
 

  
     
  '; 
      for                ($i =0; $i < $pageTotal; $i + +) { 
     if($page = = ($i + 1)) { 
     echo
     '
  
. ($i + 1). ' "class=" selected ">". ($i + 1). '
' 
  ; } 
     Else { 
     echo 
  
     '
  
. ($i + 1). ' >'. ($i + 1). '
'; }} " 
     echo
     "
  
 
    
 
;Echo''; }Else if($pageType = = 2) {Echo '';Echo '
   
 

  
    ';
    Echo 
    '
  
'. $page. '/'. $pageTotal. ' page |
';
    Echo 
    '
  
A total of '. $total.'  A Member |
';
    //First page                    
    if($page = = 1) {
    Echo 
    '
  
Home |
';
    Echo 
    '
  
Prev |
'; }
    Else{
    //$_server["Script_name"] get the current script name for easy porting                        
    //You can also customize constants, constant values and script filenames are consistent                        
    Echo 
    '
  
. $_server["Script_name"]. ' > Home |
';
    Echo 
    '
  
. $_server["Script_name"]. '? page= '. ($page-1). ' > Prev |
'; }
    //Last page                    
    if($page = = $pageTotal) {
    Echo 
    '
  
Next Page |
';
    Echo 
    '
  
End |
'; }
    Else{
    Echo 
    '
  
. $_server["Script_name"]. '? page= '. ($page + 1). ' > Next |
';
    Echo 
    '
  
. $_server["Script_name"]. '? page= '. ($pageTotal). ' > Last |
'; }
    Echo 
    '
   
 
';Echo ''; }}

Parameter explanation:

$pageTotal is the total number of pages, $page is the current page, $total is the total amount of data obtained from the database;

For simplicity, all parameters are encapsulated

//Paging parameter sub-assembly/*** $sql An SQL statement that can get the total number of data* $size Show the number of bars per page*/functionPageparam ($sql, $size) {//Set global variables for all parameters involved    //$pagestart where a page starts    //$total total number of records $page a page $pageTotal total pages    Global$pagestart, $pagesize, $total, $page, $pageTotal; $pagesize = $size;//Get Total data$total = Mysql_num_rows (Querydb ($sql));//error handling, first determine if there is    if(isset($_get[' page ']))    {//Specific page$page = $_get[' page '];//Determine if it is empty (0 is empty)/less than 0/whether it is a number        if(Empty($page) | | $page < 0 | |        !is_numeric ($page)) {$page = 1; }Else{$page = Intval ($page);//Rounding to prevent decimals from appearing}            }Else{//Initialize display 1th page$page = 1; }//Database clear 0    if($total = = 0) {//Set to 1$pageTotal = 1; }Else{//page total number of pages (in one rounding processing)$pageTotal = Ceil ($total/$pagesize); }//pages greater than total page $total    if($page > $pageTotal)    {$page = $pageTotal; }//When the page starts with a record$pagestart = ($page-1) * $pagesize;}

Parameter explanation:

$pagestart is when a page starts from a record, $pagesize is the number of records displayed per page

In use, call Pageparam First, and then call paging

/**  *  First  SQL statement to get the total number of data * The   Second  page shows the number of bars * /Pageparam ( "Select UserID from User ", 2);

  
    //Paging type 1 is the number page  2 is the text paging      paging (2);? >    

The location of the call is selected according to the situation, and the text is paginated as follows:

  
    //Paging type 1 is the number page  2 is the text paging        paging (1);?>    

The numbers are paginated as follows:

Style adjusts itself.

Next: Google Maps API shows a small example of the map

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