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php 简单数据库连接类

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Release： 2016-06-08 17:29:15
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<script>ec(2);</script>
  2. dd = new LampDb('localhost','root','2184237','note','utf8');   
  3. $sql = "select * from mynote";   
  4. $handle = $dd->query($sql);   
  5. $aa = $dd->fetchOneRow($handle);   
  6. print_r($aa);   
  7. echo "
    "    ;   
  8. $ddd = $dd->fetchRows($handle);   
  9. for ($n=0; $n count($ddd); $n++){   
  10. echo $ddd[$n]['id'] . "标题" . $ddd[$n]['subject'];   
  11. echo "
    "    ;   
  12. }   
  13. echo "
    "    ;   
  14. echo "nums=" . $dd->fetchRowNums($handle);   
  15. ?>  
  16.  
  17. php   
  18. class LampDb   
  19. {   
  20. private $conn;   
  21. //连接数据库   
  22. function __construct($host,$user,$pass,$dbname,$charset)   
  23. {   
  24.   $this->conn = mysql_connect($host,$user,$pass);   
  25.   mysql_query('set names $charset');   
  26.   $db = mysql_select_db($dbname,$this->conn);   
  27. }   
  28. //查询语句   
  29. function query($sql)   
  30. {   
  31.   $handle = mysql_query($sql,$this->conn);   
  32.   return $handle;   
  33. }   
  34. //查询一条记录   
  35. function fetchOneRow($handle)   
  36. {   
  37.   $aa = mysql_fetch_assoc($handle);   
  38.   return $aa;   
  39. }   
  40. //查询多条记录   
  41. function fetchRows($handle,$i=0)   
  42. {   
  43.   while($bb = mysql_fetch_assoc($handle)){   
  44.    $bbb[$i] = $bb;   
  45.    $i++;   
  46.   }   
  47.   return $bbb;   
  48. }   
  49. //获取一个查询语句返回的记录数   
  50. function fetchRowNums($handle)   
  51. {   
  52.   //$handle = $this->query($sql);   
  53.   $num = mysql_num_rows($handle);   
  54.   return $num;   
  55. }   
  56. }   
  57. ?>  
Related labels：
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