pdo 与mysql 的有关问题，

pdo 与mysql 的问题，请教高手？
程序在window下正常，然而在linux下，
register:
public function Insert($input) {

$time = time ();

$sql = " INSERT INTO " . __DB_PREFIX__ . "member(
`email`, 
`password`, 
`secrecy_email`, 
`lock`, 
`add_time`,
`last_login_time`
)VALUES(
'" . $input ['name'] . "',
'" . md5 ( $input ['password'] ) . "',
'" . $input ['email'] . "',
0,
" . $time . ",
" . $time . "
)";

$stmt = $this->prepare ( $sql );

if (! $stmt->execute ()) {
throw new Exception ( join ( ' ', $stmt->errorInfo () ) );
}
 }
这个方法好用，但是：
public function Account($name, $password) {

$sql="select member_id from gm_member where email='mygirl' and password='25d55ad283aa400af464c76d713c07ad'"; 
//$sql = "SELECT member_id FROM " . __DB_PREFIX__ . "member WHERE email='" . $name . "' AND password='" . $password . "'";
//$sth = $this->prepare ( $sql );
//$sth->execute ();
$stmt = $this->prepare ( $sql );
   
  if (! $stmt->execute ()) {
  throw new Exception ( join ( ' ', $stmt->errorInfo () ) );
  }
return ($stmt->rowCount () == 1) ? true : false;
 
}
}
这个法就不能用，为什么呢？
也就是说insert是可以的，但是用select 的时，就查不出来 了，在mysql 中用$sql这条语句测试是有结果的

请高手分析下，是什么原因导致的？？

[解决办法]
有没有报错呢？
[解决办法]

PHP code

public function Account($name, $password) {$sql="select member_id from gm_member where email='mygirl' and password='25d55ad283aa400af464c76d713c07ad'";//$sql = "SELECT member_id FROM " . __DB_PREFIX__ . "member WHERE email='" . $name . "' AND password='" . $password . "'";//$sth = $this->prepare ( $sql );//$sth->execute ();$stmt = $this->prepare ( $sql );               if (! $stmt->execute ()) {            throw new Exception ( join ( ' ', $stmt->errorInfo () ) );        }[color=#FF0000]$result = $stmt->fetch(PDO_FETCH_ASSOC);print_r($result);[/color]看看有结果不！return ($stmt->rowCount () == 1) ? true : false;     }}
[解决办法]
PHP code
public function Account($name, $password) {$sql="select member_id from gm_member where email='mygirl' and password='25d55ad283aa400af464c76d713c07ad'";//$sql = "SELECT member_id FROM " . __DB_PREFIX__ . "member WHERE email='" . $name . "' AND password='" . $password . "'";//$sth = $this->prepare ( $sql );//$sth->execute ();$stmt = $this->prepare ( $sql );               if (! $stmt->execute ()) {            throw new Exception ( join ( ' ', $stmt->errorInfo () ) );        }$result = $stmt->fetch(PDO_FETCH_ASSOC);print_r($result);return ($stmt->rowCount () == 1) ? true : false;     }}
[解决办法]
SQL code
$sql = "SELECT member_id FROM " . __DB_PREFIX__ . "member WHERE email=" . $name . " AND password'" . $password . "";
[解决办法]
SQL code
$sql = "SELECT member_id FROM " . __DB_PREFIX__ . "member WHERE email=" . $name . " AND password=" . $password ; 
 
[解决办法]
error_reporting(E_ALL);   打开错误提示看看！


$result = $stmt->fetch(PDO_FETCH_ASSOC);
print_r($result);//看看是否有打印结果！

[解决办法]
不大清楚，帮顶，莫非是传说中的Bug?
[解决办法]
Description:
------------
Description:
------------
Using PDO DBLIB driver to connect to MySQL server each SELECT query
I've
tried this far returns a valid resultset but PDOStatement::rowCount()
always returns 0.

When i use php 5.1.6 all works fine.

Reproduce code:
---------------
<?php

       $db = new PDO("mysql:host=xxx;dbname=xxx", "xxx", "xxx",  
array(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY => true));

       $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

       $r = $db->query("SELECT * FROM xxx");
       echo "<pre>";
       echo "rowCount = ".$r->rowCount();
       echo "</pre>";

?>

Expected result:
----------------
rowCount = 540554

Actual result:
--------------
rowCount = 0


Bug #40822  pdo rowcount bug原文地址：http://bugs.php.net/bug.php?id=40822
[解决办法]
探讨

呵呵……，刚刚查了一下资料，据说，有的pdo的rowCount()是不支持，select 的！！只支持，update delete insert，哎……，我们这个程序好多地方都用的 select的rowCount()，这回改吧！！MD！！

[解决办法]
rowCount () 这个方法

从那来的方法？