Anforderungen
Could not install mysql, on windows, had several conflicts or bugs.
In order to solve it:
* Used the "libmysql.dll" provided by PHP zip files, not the one that comes with Mysql, the mysql file had to be moved or deleted from its folder. Put it on the "apache/bin" folder, altought some use it in "windows" folder.
* Originally, moved "*mysql*.dll" files from its extension folder, and returned back.
* enabled mysql driver extensions in the "php.ini" file, but also enabled some extensions, that seemed not to be required, but, it did, like "php_openssl.dll" or "php_pdo.dll" on an early version of php.
Added the "PHPIniDir xxx"" to the "httpd.conf" apache config. file, where xxx is the path to the folder where the "php.ini" file is located, and make sure its the same.
Be warned, that this fixes, may help or not, for your installation, since there are many ways to configure the same thing (to solve a problem).
Installation
Benutzen Sie die --with-mysql[=DIR] Konfigurationsoption um diese Erweiterung zu kompilieren. Der optionale Parameter [DIR] sollte dabei das Verzeichnis angeben in dem Sie MySQL installiert haben.
Die MySQL Erweiterung ist zwar kompatibel mit aktuellen MySQL Versionen, sie unterstützt aber nich mehr alle zusätzlichen Funktionalitäten die seit MySQL 4.1.0 hinzugekommen sind. Wenn Sie diese benötigen so verwenden Sie statt dessen die neuere MySQLi Erweiterung.
Wenn Sie beide MySQL Erweiterungen gleichzeitig nutzen wollen so sollten Sie diese mit der gleichen MySQL Client Library Version erstellen um mögliche Versionskonflikte zu vermeiden.
Installation auf Linux Systemen
Beachten sie: [DIR] ist der Pfad zu den MySQL Client Bibliothek Dateien (Header-Dateien und Bibliotheken), die von » MySQL heruntergeladen werden können.
| PHP Version | Standard | Konfigurationsoptionen: mysqlnd | Konfigurationsoptionen: libmysql | Changelog |
|---|---|---|---|---|
| 4.x.x | libmysql | Nicht verfügbar | --without-mysql zum Deaktivieren | MySQL standardmäßig aktiviert, MySQL Client Bibliotheken gebündelt |
| 5.0.x, 5.1.x, 5.2.x | libmysql | Nicht verfügbar | --with-mysql=[DIR] | MySQL ist nicht mehr standardmäßig aktiviert und die MySQL Client Bibliotheken sind nicht mehr gebündelt |
| 5.3.x | libmysql | --with-mysql=mysqlnd | --with-mysql=[DIR] | mysqlnd ist nun verügbar |
| 5.4.x | mysqlnd | --with-mysql | --with-mysql=[DIR] | mysqlnd ist nun der Standard |
Installation auf Windows Systemen
PHP 4
Die MySQL Erweiterung ist bereits in PHP einkompiliert.
PHP 5.0.x, 5.1.x, 5.2.x
MySQL ist nicht mehr automatisch aktiviert, Sie müssen die php_mysql.dll DLL in Ihrer php.ini selbst einbinden. PHP benötigt darüber hinaus Zugriff auf die MySQL Client Bibliothek. Eine Datei mit Namen libmysql.dll ist in der PHP Distribution für Windows enthalten, diese muss für Ihr Windows System über PATH zu finden sein damit Sie aus PHP heraus MySQL Datenbanken nutzen können. Der FAQ-Eintrag "Wie füge ich unter Windows PATH on Windows mein PHP-Verzeichnis hinzu?" bietet nähere Informationen zu diesem Thema. Sie können libmysql.dll zwar auch direkt in Ihr Windows Systemverzeichnis kopieren (da dieses immer im PATH Suchpfad enthalten ist), von diesem Vorgehen wird aber abgeraten.
Die PHP Direktive extension_dir sollte, wie bei jeder anderen Erweiterung auch, auf das Verzeichnis zeigen in dem die PHP Erweiterungen (wie php_mysql.dll) zu finden sind. Sie hier auch Manuelle Windows Installationsanweisungen. Ein typischer Wert für ein PHP 5 extension_dir ist c:\php\ext
Hinweis:
Erscheint beim Start des Webservers eine Fehlermelding in der Art von "Unable to load dynamic library './php_mysql.dll'" so liegt das daran das php_mysql.dll und/oder libmysql.dll vom System nicht gefunden werden konnten.
PHP 5.3.0+
Der MySQL Native Treiber ist standardmäßig aktiviert. Binden sie php_mysql.dll ein, libmysql.dll wird jedoch nicht mehr benötigt oder genutzt.
MySQL Installationshinweise
Warnung
Initialisierungsprobleme und Abstürze können vorkommen wenn Sie diese Erweiterung zusammen mit der recode Erweiterung verwenden. Nähere Informationen hierzu finden Sie im Handbuch-Abschnitt zu recode.
Hinweis:
Wenn Sie andere Zeichensätze als den Standard latin Zeichensatz verwenden sollen so müssen Sie zum Erstellen der Erweiterung eine externe libmysql verwenden die mit voller Zeichensatzunterstützung erstellt wurde. Die mit PHP 4 mitgelieferte libmysql bietet dies nicht.
add a note
User Contributed Notes
Installation - [15 notes]
mail dot umlcat at gee mail dot com ¶
5 months ago
o dot kochetilov at gmail dot com ¶
2 years ago
Please note that libmySQL.dll in MySQL bin directory should be renamed in order to use right library (that comes with PHP).
buzzr515 at gmx dot de ¶
2 years ago
i've experienced a similar (if not the same) problem.
to enable the mysql_... and mysqli_... funtionality, i opened the php.ini file to uncomment the following lines:
;extension=php_mysql.dll
;extension=php_mysqli.dll
;extension=php_pdo_mysql.dll
but phpinfo() still stated that no mysql extensions were loaded.
i tried the fixes and suggestions above with no success.
so i invoked the windows shell and typed ("Path" environment variable set to the PHP & MySQL directories):
php.exe -m
this returned the following error: "PHP Startup: Unable to load dynamic library 'C:\php5\php_mysql.dll' - Module not found."
this told me that PHP didn't recognize what i thought was the extensions directory. it searched all other places first (sys-dir, workin'-dir, the MySQL "bin" dir because of the "Path" variable set, and even a curious directory "C:\php5" that doesn't even exist on my mashine) but not the expected "ext" directory.
so the fix was to go to "php.ini" again and uncomment the following line:
;extension_dir="ext"
this fixed it for me.
so if module loading is done improperly, first of all check the "Path" environment variable and the "php.ini" file - especially the "extension_dir" config value - and check if all values are set to their correct values.
hope this helps any1.
----------------------------------------
OS: Win7 Ultimate x86
Apache v2.2.16
PHP v5.3.3
MySQL v5.1.50
heneryville at gmail dot com ¶
3 years ago
I believe that this is happens especially with Windows 7. As far I I've been able to tell XP and Vista come with this line enabled, but windows 7 comments it out and notes that the DNS will handle this.
jonnus ¶
5 years ago
In windows systems, the same error "unable to load dynamic library php_mysql.dll" will happen, if there's an old version of the file in the "windows\system32" folder.
Either remove it or update it.
titus at antennasystems dot com ¶
2 years ago
I ran into the soon to be infamous problem of upgrading to PHP 5.3.x.
The way I found to resolve the issue was to
1: Do "mysql_upgrade" on the server (to make MySQL compliant with MySQL 4.1+).
2: Modify my.cf to not use old passwords:
(Just comment out "old_passwords=1")
#old_passwords=1
3: Change the root password so you can properly connect to the server:
SET PASSWORD FOR 'root'@'localhost' = PASSWORD('enter_new_password_here');
http://dev.mysql.com/doc/refman/5.1/en/old-client.html
http://tinyurl.com/mysql-old-password
Taken from http://www.comsiteconstruction.com/blueonyx-modifications
samishiikihaku23 at gmail dot com ¶
2 years ago
I've checked all the 5.3 distribution files from http://windows.php.net/ for the "libmysql.dll" file that this article claims is in the distributions.
None of the 5.3 dist. supplies "libmysql.dll". Download the recent 5.2 release for the file.
jez300 ¶
3 years ago
Windows 7 / Vista:
This took me hours to realise... If you receive the message:
Warning: mysql_connect(): [2002] A connection attempt failed because the connected party did not (trying to connect via tcp://localhost:3306)
You may need to map localhost to your IP address (127.0.0.1) which is used to find your Mysql server.
Edit {systemdrive}:\Windows\System32\drivers\etc
Make sure "127.0.0.1 localhost" isn't commented out with # at the begining of the line!
-----
You may also like to know that if you change from MySQL 32 bit to 64 bit and the Mysql service wont start you may need to rename or delete your Mysql data
{systemdrive}:\ProgramData\x MySQL\MySQL Server 5.1\data
Regards,
Jez.
amatsak at gmail dot com ¶
3 years ago
I have experienced exactly the same problem as flo_stefi at yahoo dot com below. It appears that instead of loading libmysql.dll that came with the PHP package, the PHP engine was loading libmySQL.dll located in MySQL's bin directory, which was causing Apache to crash.
I fixed the problem by renaming MySQL's libmySQL.dll into libmySQL_renamed.dll. Now PHP loads the library that came with its package and everything works fine.
flo_stefi at yahoo dot com ¶
4 years ago
I had a problem to make mysql work with php on Windows. Using mysql-5.1.32-win32 and php-5.2.9-1-win32-installer I've installed mysql and php. All seemed to be ok (phpinfo displayed the right information) but when running a basic script mysql_connect(..) the apache ends with a stupid error like "[Wed Apr 01 14:44:05 2009] [notice] Parent: child process exited with status 3221225477 -- Restarting.".
I manage to fix it by using instead of libMySQL.dll from mysql package another version (libmysql.dll) I had from a previous installation.
lobbanhousehold at gmail dot com ¶
4 years ago
I figured my problem why php and mysql weren't working together even though they worked independent of each other. PHP was configured with IIS 5.1 (XP) using the php5isapi.dll file.
I also set system variables in PATH adding the locations of both php and mysql folders. I also moved the mysql DLL files from ext folder to the root folder of php.
I discovered that php would not work with mysql if php folder was not located on the C:\ (i.e. C:\php). I also renamed the libmysql.dll that came with mysql so that the system would not see it, and moved the one that came with php to C:\WINDOWS\system32.
After I did this last paragraph i was able to see MySQL and MySQLi sections listed in phpinfo() which indicates MySQL is finally enabled
admin at kobashicomputing dot com ¶
4 years ago
Unfortunately this one bit me for a good half day.
Placing libmysql.dll in the php/ext directory did not work. I tested this under 5.6.2. You need to have it somewhere in the PATH or in SYSTEM or SYSTEM32. But to me this is very silly to force the user to have to setup environment variables or move DLLs around. It shouldn't have to go that far and be the responsibility of the setup program and/or developer.
I really think this issue could be solved doing this:
1) Installer/distribution bundle all three files together under one directory (ext) - php_mysql.dll/php_mysqli.dll/libmysql.dll
2) Developer goes into php_mysql.dll/php_mysqli.dll and in DllMain() on DLL_PROCESS_ATTACH:
LoadLibrary ("./libmysql.dll");
Then you don't have to deal with this problem and neither do your users.
Kerry Kobashi
rogerc at clubsites dot net ¶
4 years ago
This error also occurs if the windows path entry for an older version of MYSQL appears before the path entry for a late version of php. In which case the version of libmysl.dll in the MySQL bin directory will be found before the one bundled with php. Reversing the system path entries so php is first fixes this problem. e.g.
PATH= ... c:\php;C:\Program Files\MySQL\MySQL Server 4.1\bin
Mahesh ¶
4 years ago
In windows systems, the error "unable to load dynamic library php_mysql.dll" also happens if there's an old version of the file libmysql.dll in the "windows\system32" folder.
Steve in Weston-Super-Mare ¶
1 year ago
I had problems when moving from a version of PHP that used the isapi dll to the fast cgi version. The script to register the script maps compained that there was already a script map in place.
I went to the IIS control panel, right clicked on websites and removed the php association in the Home Directory | Configuration screen.
However, the fastcgi script still complained about existing script map. Finally I tracked it down, I had to right click on Default Web Site and clear out the php mappings from there too.
Then it all worked, except that for some strange reason, the php.ini file that gets picked up is the one from my old PHP directory, not the latest upgrade one. But this can be detected by running phpinfo which shows the loaded php.ini file so I knew which one to amend with the fastcgi options.
Bit of a hassle to figure it all out but it does work in the end.