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？？

------解决方案--------------------
有没有报错呢？
------解决方案--------------------

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;
     
}
}

------解决方案--------------------

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;
     
}
}

------解决方案--------------------

SQL code

$sql = "SELECT member_id FROM " . __DB_PREFIX__ . "member WHERE email=" . $name . " AND password'" . $password . "";

------解决方案--------------------

SQL code

$sql = "SELECT member_id FROM " . __DB_PREFIX__ . "member WHERE email=" . $name . " AND password=" . $password ;
 

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