User query class instance implemented by php, php implementation class instance_PHP tutorial

Instances of user query classes implemented in php, examples of php implementation classes

The examples in this article describe the user query classes implemented in php. Share it with everyone for your reference. The specific implementation method is as follows:

<&#63;php
 class user
 {
  var $usertable;
  function get_oneuser($field,$value)
  {
   $field_array=array("id","name");  //查询方式
   if(in_array($field,$field_array))
   {
    $sql="SELECT * FROM `$this->usertable` WHERE $field='$value'";
    $db=new database;
    $res=$db->execute($sql);
    $obj_user=mysql_fetch_object($res);
    return $obj_user;
   }
   else echo "查询方式不对";
  }
  function get_moreusers()
  {
   global $db;
   $argnums=func_num_args();
   $argarr=func_get_args();
   switch($argnums)
   {
    case 0:
     $sql="SELECT * FROM `$this->usertable`";
     break;
    case 2:
     $sql="SELECT * FROM `$this->usertable` WHERE $argarr[0]='$argarr[1]'";
     break;
    case 4:
     $sql="SELECT * FROM `$this->usertable` WHERE $argarr[0]='$argarr[1]' AND $argarr[2]='$argarr[3]'";
     break;
   }
   //$db=new database;
   $res=$this->execute($sql);
   $obj_arr=array();
   while($obj=mysql_fetch_object($res))
   {
    $obj_arr[]=$obj;
   }
   return $obj_arr;
  }
 }
&#63;>

I hope this article will be helpful to everyone’s PHP programming design.

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