如何修复 PHP 警告：PHP 启动：无法加载动态库 'ext\\\\php_curl.dll'？

Question

I currently have PHP 5.5.12 and Apache 2.4 installed on Windows Server 2008 R2. Everything is running perfectly with no issue/warnings.

What I have done is copied the same Apache file/configuration to another server. I copied the C:\\PHP directory and then the C:\\Apache24 directory and pasted them into the new server.

Then I installed the Apache with one change (ie httpd -k install .) I changed the port number from 80 to 8877. The Apache is working with no issue and it is running on the 8877 port. I can also open the default page by going to SERVER_IP_ADDRESS:8877 and it works.

But, PHP is not working as it should. In the error.log file from the Apache server I get the warning listed below

PHP Warning:  PHP Startup: Unable to load dynamic library 'ext\\php_curl.dll' - The specified module could not be found.\r\n in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library 'ext\\php_ldap.dll' - The specified module could not be found.\r\n in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library 'ext\\php_mysql.dll' - The specified module could not be found.\r\n in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library 'ext\\php_mysqli.dll' - The specified module could not be found.\r\n in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library 'ext\\php_openssl.dll' - The specified module could not be found.\r\n in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library 'ext\\php_pdo_mysql.dll' - The specified module could not be found.\r\n in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library 'ext\\php_sqlsrv_55_ts.dll' - The specified module could not be found.\r\n in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library 'ext\\php_pdo_sqlsrv_55_ts.dll' - The specified module could not be found.\r\n in Unknown on line 0

I can't seem to figure out why I get this error? All the .dll files that the warning is stating "The specified module could not be found" do exists in the C:\\PHP\\ext directoryphp

The PHP extensions are located in

C:\php\ext

Inside the file php.ini I have this variable

extension_dir = "ext"

here is a directory listing of the ext folder

 Volume in drive C is OS
 Volume Serial Number is C63C-1D75

 Directory of C:\php\ext

07/29/2014  06:42 PM    <DIR>          .
07/29/2014  06:42 PM    <DIR>          ..
04/30/2014  02:46 PM            66,560 php_bz2.dll
04/30/2014  02:46 PM            72,704 php_com_dotnet.dll
04/30/2014  02:46 PM           507,392 php_curl.dll
04/30/2014  02:46 PM            18,944 php_enchant.dll
04/30/2014  02:46 PM            43,008 php_exif.dll
04/30/2014  02:46 PM         2,679,808 php_fileinfo.dll
04/30/2014  02:46 PM         1,358,848 php_gd2.dll
04/30/2014  02:46 PM            40,960 php_gettext.dll
04/30/2014  02:46 PM           240,128 php_gmp.dll
04/30/2014  02:46 PM           831,488 php_imap.dll
04/30/2014  02:46 PM            65,024 php_interbase.dll
04/30/2014  02:46 PM           261,632 php_intl.dll
04/30/2014  02:46 PM           179,200 php_ldap.dll
04/30/2014  02:46 PM         1,239,552 php_mbstring.dll
04/30/2014  02:46 PM            36,864 php_mysql.dll
04/30/2014  02:46 PM            88,576 php_mysqli.dll
04/30/2014  02:46 PM           141,824 php_oci8.dll
04/30/2014  02:46 PM           142,336 php_oci8_11g.dll
04/30/2014  02:46 PM           120,320 php_opcache.dll
04/30/2014  02:46 PM            72,704 php_openssl.dll
04/30/2014  02:46 PM            21,504 php_pdo_firebird.dll
04/30/2014  02:46 PM            24,576 php_pdo_mysql.dll
04/30/2014  02:46 PM            23,040 php_pdo_oci.dll
04/30/2014  02:46 PM            20,480 php_pdo_odbc.dll
04/30/2014  02:46 PM            27,648 php_pdo_pgsql.dll
04/30/2014  02:46 PM           465,408 php_pdo_sqlite.dll
08/28/2012  04:15 PM           186,520 php_pdo_sqlsrv_54_ts.dll
06/26/2013  03:22 PM           166,400 php_pdo_sqlsrv_55_ts.dll
04/30/2014  02:46 PM            90,112 php_pgsql.dll
04/30/2014  02:46 PM            12,288 php_shmop.dll
04/30/2014  02:46 PM           385,536 php_snmp.dll
04/30/2014  02:46 PM           236,544 php_soap.dll
04/30/2014  02:46 PM            54,784 php_sockets.dll
04/30/2014  02:46 PM           617,472 php_sqlite3.dll
08/28/2012  04:15 PM           204,952 php_sqlsrv_54_ts.dll
06/26/2013  03:22 PM           183,296 php_sqlsrv_55_ts.dll
04/30/2014  02:46 PM            31,744 php_sybase_ct.dll
04/30/2014  02:46 PM           236,544 php_tidy.dll
04/30/2014  02:46 PM            51,712 php_xmlrpc.dll
04/30/2014  02:46 PM           231,936 php_xsl.dll
              40 File(s)     11,480,368 bytes
               2 Dir(s)  83,103,895,552 bytes free

When I try to access the website I get this error

Fatal error: Undefined class constant 'MYSQL_ATTR_INIT_COMMAND'

which is because the extensions are not loaded.

I am assuming that the configuration are correct since the same configuration are working on a different server.

How can I fix this PHP Startup issue?

Answer 1

As Darren commented , Apache don't understand php.ini relative paths in Windows.

To fix it, change the relative paths in your php.ini to absolute paths.

extension_dir="C:\full\path\to\php\ext\dir"

Answer 2

使用绝对路径：

extension_dir="C:\full\path\here"

Answer 3

If you are using laragon open the php.ini

In the interface of laragon menu-> php-> php.ini

when you open the file look for ; extension_dir = "./"

create another one without **; ** with the path of your php version to the folder ** ext ** for example

extension_dir = "C: \ laragon \ bin \ php \ php-7.3.11-Win32-VC15-x64 \ ext"

change it save it

Answer 4

1. Check if compatible Mysql for your PHP version is correctly installed. ( eg. mysql-installer-community-5.5.40.1.msi for PHP 5.2.10, apache 2.2 and phpMyAdmin 3.5.2 )
2. In your php\\php.ini set your loadable php extensions path (eg. extension_dir = "C:\\php\\ext" ) ( https://drive.google.com/open?id=1DDZd06SLHSmoFrdmWkmZuXt4DMOPIi_A )
3. (In your php\\php.ini ) check if extension=php_mysqli.dll is uncommented ( https://drive.google.com/open?id=17DUt1oECwOdol8K5GaW3tdPWlVRSYfQ9 )
4. Set your php folder (eg. "C:\\php" ) and php\\ext folder (eg. "C:\\php\\ext" ) as your runtime environment variable path ( https://drive.google.com/open?id=1zCRRjh1Jem_LymGsgMmYxFc8Z9dUamKK )
5. Restart apache service ( https://drive.google.com/open?id=1kJF5kxPSrj3LdKWJcJTos9ecKFx0ORAW )

Answer 5

maybe useful for somebody, I got next problem on windows 8, apache 2.4, php 7+.

php.ini conf>

extension_dir="C:/Server/PHP7/ext"

php on apache works ok but on cli problem with libs loading, as a result, I changed to

extension_dir="C:/server/PHP7/ext"

Answer 6

At the prompt use:

dir /x

Look for the reduced name of the directory in the "Program Files (x86) line"

27/08/2018  15:07    <DIR>          PROGRA~2     Program Files (x86)

Put the following configuration in php.ini for the option:

extension_dir="C:\PROGRA~2\path\to\php\ext"

Answer 7

I have the same issue with windows10, apache 2.2.25, php 5.2 Im trying to add GD to a working PHP.

how I turn around and change between forward and backward slash, plus trailing or not, I get some variant of ;

PHP Warning: PHP Startup: Unable to load dynamic library 'C:/php\\php_gd2.dll' - Det g\\xe5r inte att hitta den angivna modulen.\\r\\n in Unknown on line 0

(swedish translated: 'It is not possible to find the module' )

in this perticular case, the php.ini was: extension_dir = "C:/php"

the dll is put in two places C:\\php and C:\\php\\ext

IS it possible that there is and "error" in the error log entry ? Ie that the .dll IS found (as a file) but not of the right format, or something like that ??