PHP Startup: Unable to load dynamic library

 連接代碼

<?php 
echo 'a';
$cn = mysql_connect("localhost",'你的mysql用戶名','你的mysql用戶密碼') or die(mysql_error());
if( $cn )
{
  echo phpinfo();
}
else
{
 echo 'mysql connect fail';
}
?>

因為服務器使用的是安全php.ini所在沒有錯誤顯示，於時相看了apache安裝目錄的logs的errors.log日志文

件發現如下錯誤

PHP Warning:  PHP Startup: Unable to load dynamic library

'D:myserverphpextphp_mysql.dll' - xd5xd2xb2xbbxb5xbdxd6xb8xb6xa8xb5xc4xc4

xa3xbfxe9xa1xa3rn in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library

'D:myserverphpextphp_mysqli.dll' - xd5xd2xb2xbbxb5xbdxd6xb8xb6xa8xb5xc4

xc4xa3xbfxe9xa1xa3rn in Unknown on line 0

[Tue Dec 31 09:05:15 2013] [error] [client 127.0.0.1] PHP Fatal error:  Call to undefined

function mysql_connect() in E:wwwa.php on line 2, referer: http://localhost/
[Tue Dec 31 09:05:16 2013] [error] [client 127.0.0.1] PHP Fatal error:  Call to undefined

function mysql_connect() in E:wwwa.php on line 2, referer: http://localhost/
[Tue Dec 31 09:05:17 2013] [error] [client 127.0.0.1] PHP Fatal error:  Call to undefined

function mysql_connect() in E:wwwa.php on line 2, referer: http://localhost/
[Tue Dec 31 09:06:04 2013] [error] [client 127.0.0.1] PHP Fatal error:  Call to undefined

function mysql_connect() in E:wwwa.php on line 3, referer: http://localhost/
[Tue Dec 31 09:06:05 2013] [error] [client 127.0.0.1] PHP Fatal error:  Call to undefined

function mysql_connect() in E:wwwa.php on line 3, referer: http://localhost/
[Tue Dec 31 09:06:05 2013] [error] [client 127.0.0.1] PHP Fatal error:  Call to undefined

function mysql_connect() in E:wwwa.php on line 3, referer: http://localhost/
[Tue Dec 31 09:06:05 2013] [error] [client 127.0.0.1] PHP Fatal error:  Call to undefined

function mysql_connect() in E:wwwa.php on line 3, referer: http://localhost/
[Tue Dec 31 09:06:06 2013] [error] [client 127.0.0.1] PHP Fatal error:  Call to undefined

function mysql_connect() in E:wwwa.php on line 3, referer: http://localhost/
[Tue Dec 31 09:06:06 2013] [error] [client 127.0.0.1] PHP Fatal error:  Call to undefined

function mysql_connect() in E:wwwa.php on line 3, referer: http://localhost/

日志中有這麼一句

PHP Startup: Unable to load dynamic library  'D:myserverphpextphp_mysql.dll' 這個意思是

沒有加載成功php_mysql文件了，還有一點是提示 PHP Fatal error:  Call to undefined function

mysql_connect(),，這個是mysql沒有連接成功也就是加載mysql庫失敗了，根據分析有兩種可能一是文件不

存在，這個問題不存因為我以前用的是這個php解壓包，2是服務器環境變量問題，如果是環境變量有兩種解

決辦法

1，是直接在windows增加環境變量

2，直接把在d:PHP裡找到php5ts.dll,libmysql.dll將其復制到c:/winnt/system32下(winNT/2000的機器),

而winXP/2003是復制到c:/windows/system32下即可