How does php return variables + assemble html for ajax-php Tutorial?

How does php return variables + assemble html to ajaxfunction & nbsp; html ($ select, $ name) {global & nbsp; $ pagecon; $ a1; $ b2; $ result; $ result. & lt; ul & nbsp; & gt; while ($ row $ select-& gt; fetch: How does php return variables + assemble html to ajax?

Function html ($ select, $ name ){
Global $ pagecon;
$ A = '1 ';
$ B = '2 ';
$ Result = '';
$ Result. ='
 

  
';
  
While ($ row = $ select-> fetch ()){
  
$ Result. ='
  
';
$ Result. ='

   

    
';
    
$ Result. = ''. $ row ['ztname'].'';
    
$ Result. = ''. $ row ['zttype'].'';
    
$ Result. ='
    
Recommendation Date: '. $ row ['zttime'].'
    
';
    
}
    
$ Result. ='
   
';
$ Result. ='
   
    
'. $ Pagecon .'
   ';
Return $ result, $ a, $ B;
}
 

$ A, $ B, and an assembled $ result html are returned to ajax. if json is not used

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------ Solution --------------------

return "$result,$a,$b";

success:function(json){
            a = json.split(',');

------ Solution --------------------

Function html ($ select, $ name ){
Global $ pagecon;
$ A = '1 ';
$ B = '2 ';
$ Result = '';
$ Result. ='
 

  
';
  
While ($ row = $ select-> fetch ()){
  
$ Result. ='
  
';
$ Result. ='

   

    
';
    
$ Result. = ''. $ row ['ztname'].'';
    
$ Result. = ''. $ row ['zttype'].'';
    
$ Result. ='
    
Recommendation Date: '. $ row ['zttime'].'
    
';
    
}
    
$ Result. ='
   
';
$ Result. ='
   
    
'. $ Pagecon .'
   ';
Return $ result. '--'. $ a. '--'. $ B; // use -- to connect and return
}
 

Function getData (page ){
Alert ('OK ');
$. Ajax ({
Type: 'post ',
Url: 'Action/test. php ',
Data: {'pagenum': page-1 },
BeforeSend: function (){
$ ("# Sss ul"). append ("
Loading...
");
},
Success: function (json ){
Var arr = json. split ('--');
$ ("# Sss ul"). empty ();
Result = arr ['0'] // Get the variable from php $ result
Total = arr ['0'] // Get the variable from php $
PageSize = // Get the variable $ B from php
$ ("P # sss" pai.html (data );
},
Complete: function () {// generate a page entry
GetPageBar ();
},
Error: function (){
Alert ("data loading failed ");
}
});
}

Hope to help you!