PHP product comparison feature code sharing _php tips

Here is your own hands-on code, and we learn to study together.

Product comparison of the call JS file (contains the merchandise contrast box floating js):

/* Floating window * * (function () {var n=10; 
  var Obj=document.getelementbyid ("Goods-compare"); 
  if (!obj) {return false; 
  } var x=0; Window.onscroll=function () {obj.style.top= (document.body.scrolltop| | 
  DOCUMENT.DOCUMENTELEMENT.SCROLLTOP) +n+ ' px '; 
  }; Window.onresize=function () {obj.style.top= (document.body.scrolltop| | 
  DOCUMENT.DOCUMENTELEMENT.SCROLLTOP) +n+ ' px ';   
}; 
 
})(); 
  Add Display contrast box function Addcompare (CHK) {$ (' #goods-compare '). FadeIn (). Show (); 
  var count=$ (". Compare-box li"). length; 
    if (COUNT>2)//Here you can modify the contrast of the data Oh {alert (' Product comparison of 3 kinds of OH '); 
  Return 
      } $.ajax ({type: ' post ', url: ' ajax.php ', data: {' action ': ' 1 ', ' gid ': chk.gid,//Product ID ' Gname ': chk.gname,//commodity name ' Gtype ': chk.gtype//commodity category, different categories can not be compared}, Cache:false, Async:false, S 
      Uccess:function (Result) {if (result!= ") {alert (result); }else{var url= ' http://www.lusen.com/product-' +chk.gid+ '. html '///Set the link address of the item $ (". Compare-box"). Append ("<li class= ' Division Clearfix ' id= '" +chk.gid+ ') ' ><div class = ' span-3 ' ><a href= ' "+url+" ' target= ' _blank ' title= ' "+chk.gname+" ' > ' "+chk.gname+" ' </a></div> <span onclick=\ "Removecompare (' +chk.gid+"); \ "> Delete </span></li>") $ ("#comids"). Val ($ (". compare- 
        Box Li "). Map (function () {//All merchandise IDs that will be compared, assigned to #comids return $ (this). attr (' id '); 
      }). Get (). Join (",")); 
} 
    } 
  }); //delete Contrast product function Removecompare (ID) {$.ajax ({type: ' post ', url: ' ajax.php ', data: {' act 
      Ion ': ' 2 ', ' GID ': id}, Cache:false, success:function (Result) {$ ("#" +id). Remove (); 
      $ ("#comids"). Val ($ (". Compare-box li"). Map (function () {return $ (this). attr (' id '); 
    }). Get (). Join (",")); 
  
} 
  }); //Empty Contrast product function Clearcompare () {$.ajax ({type: ' post ', url: ' ajax.php ', data: {' action ': ' 3 ' 
    }, Cache:false, success:function (Result) {$ (". Compare-box"). html ('); 
    $ ("#comids"). Val ('); 
} 
  }); //Show Contrast box function Showcompare () {$.ajax ({type: ' post ', url: ' ajax.php ', data: {' action ': ' 4 
        '}, Success:function (Result) {if (result) {$ (". Compare-box"). Append (result); 
        $ ("#comids"). Val ($ (". Compare-box li"). Map (function () {return $ (this). attr (' id '); 
        }). Get (). Join (",")); 
      $ (' #goods-compare '). FadeIn (). Show (); 
  
} 
    } 
  }); 
//Click Close Contrast box $ ('. CLOSE-GC '). Click (function () {$ (' #goods-compare '). fadeout (). Hide (); 
 });

Product comparison invoke Ajax file

<?php function mb_unserialize ($serial _str) {$serial _str =stripslashes ($serial _str); 
Return Unserialize ($serial _str); 
      } if ($_post[' action ']== ' 1 ') {//add if (isset ($_cookie[' Gtype '))) {if ($_cookie[' Gtype ']!=$_post[']) { Echo ' Sorry, you selected different categories of products can not be added to the comparison, please select the same product or empty the current contrast bar and then select. 
      '; 
    Return 
  }}else {Setcookie (' gtype ', $_post[' gtype ')]; 
    } if (Isset ($_cookie[' gid ')) {$arr _str = $_cookie[' gid ']; 
    $arr =mb_unserialize ($arr _str); 
      if (count ($arr) >2) {//number of commodity comparisons echo "more than 3 kinds of commodity comparison"; 
    Return 
        foreach ($arr as $val) {if ($val [0]==$_post[' gid ']) {echo "The product has been added to the contrast box"; 
      Return 
    } $info =array ($_post[' gid '],$_post[' gname '],$_post[' Gtype ']); 
    $arr []= $info; 
    $arr _str=serialize ($arr); 
  Setcookie (' gid ', $arr _str); 
    }else {$info =array ($_post[' gid '],$_post[' gname '],$_post[' Gtype ']); 
    $arr []= $info; 
    $arr _str=serialize ($arr); 
 Setcookie (' gid ', $arr _str); }}else if ($_post[' action ']== ' 2 ') {//delone $id =$_post[' gid ']; 
  $arr _str = $_cookie[' gid '];   
  $arr =mb_unserialize ($arr _str); 
    foreach ($arr as $key => $val) {if ($val [0]== $id) {unset ($arr [$key]);   
  }} $arr _str=serialize ($arr); 
Setcookie (' gid ', $arr _str); 
  }else if ($_post[' action ']== ' 3 ') {//delall setcookie (' gid ', '); 
Setcookie (' Gtype ', '); 
    }else if ($_post[' action ']== ' 4 ') {//showlist if (isset ' gid ')) {$data = '; 
    $arr _str = $_cookie[' gid '];  
    $arr =mb_unserialize ($arr _str); foreach ($arr as $val) {$url = "http://www.lusen.com/product-". $val [0]. ". 
      HTML "; $data. = "<li id= ' {$val [0]} ' class= ' Division Clearfix ' ><div class= ' span-3 ' ><a href= ' {$url} ' target= ' _ Blank ' title= ' {$val [1]} ' >{$val [1]}</a></div><span onclick=\] Removecompare (' {$val [0]} '); \ > 
    Delete </span></li> "; 
  Echo $data;  }}?>

Above is the product comparison function to achieve the code, I hope you can study carefully, there are good ideas to discuss together.