PHP - 從MySQL服務器檢索數據

Question

有誰知道如何檢索一段數據並在php文件中顯示結果？ ，我會進入一個類似的查詢是這樣的：

SELECT 'email' FROM 'users' WHERE 'username' = 'bob' 

因此，其結果必然是剛剛的電子郵件。

感謝，

凱文

Answer 1

要連接

$con = mysql_connect("host","userName","passWord"); 
if (!$con){die('Could not connect: ' . mysql_error());} 
mysql_select_db("dbNameToSelect", $con); 

要查詢

$result = mysql_query("SELECT `email` FROM `users` WHERE `username` = 'bob'"); 
while($row = mysql_fetch_array($result)){ 
    // do stuff with $row['colName'] 
} 

要關閉連接mysql_close($con);

Answer 2

見阿爾斯o：http://www.php.net/manual/en/mysqli.query.php 有幾個很好的例子

Answer 3

您需要連接並從數據庫中獲取數據，如mysql。檢查下面的代碼：

$server = "localhost"; 
$username = "root"; 
$password = ""; 
$database = "mysampledb"; 

mysql_connect($server, $username, $password); 
mysql_select_db($database); 

$result = mysql_query("SELECT email FROM users WHERE username = 'bob'") or die(mysql_error()); 

while($row = mysql_fetch_assoc($result)) { 
    echo $row["email"]; 
}