Wie man Konfigurationseinstellungen ändert

Last updated: Fri, 14 Nov 2008

Laufzeiteinstellungen

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Wie man Konfigurationseinstellungen ändert

Die Konfigurationsdatei

Die Konfigurationsdatei wird beim Start von PHP eingelesen. Für die Servermodul-Versionen von PHP geschieht dies nur einmal beim Start des Webservers. Für die CGI- und CLI-Versionen geschieht dies bei jedem Aufruf.

Nach der php.ini wird an folgenden Orten in der angegebenen Reihenfolge gesucht:

Spezielle Orte für SAPI Module (PHPIniDir-Direktive im Apache2, -c Kommandozeilenparameter in CGI in CLI, php_ini-Parameter in NSAPI, PHP_INI_PATH-Umgebungsvariable im THTTPD)
Die PHPRC-Umgebungsvariable. Vor PHP 5.2.0 wurde dies nach dem unten angegebenen Registrierungsschlüssel geprüft.
Seit PHP 5.2.0 werden die folgenden Registrierungsschlüssel in der angegebenen Reihenfolge durchsucht: HKEY_LOCAL_MACHINE\SOFTWARE\PHP\x.y.z\IniFilePath, HKEY_LOCAL_MACHINE\SOFTWARE\PHP\x.y\IniFilePath und HKEY_LOCAL_MACHINE\SOFTWARE\PHP\x\IniFilePath, wobei x, y und z die Major-, Minor- und Release-Version von PHP darstellen.
HKEY_LOCAL_MACHINE\SOFTWARE\PHP\IniFilePath (Windows Registry)
Aktuelles Arbeitsverzeichnis (außer CLI)
Das Webserververzeichnis (für SAPI-Module) oder das PHP-Verzeichnis (andernfalls in Windows)
Windows-Verzeichnis (C:\windows oder C:\winnt) (unter Windows) oder die --with-config-file-path Kompilierungsoption

Falls die Datei php-SAPI.ini existiert (wobei SAPI die verwendete SAPI ist, was als Dateinamen z.B. php-cli.ini ergibt), wird diese anstelle der php.ini verwendet. Der Name der SAPI kann durch php_sapi_name() ermittelt werden.

Hinweis: Der Apache-Webserver wechselt beim Start das Arbeitsverzeichnis in das Wurzelverzeichnis, weshalb PHP versucht, die php.ini aus dem Wurzelverzeichnis zu lesen, wenn diese existiert.

Die Optionen der php.ini für Extensions werden auf den Handbuchseiten der jeweiligen Extensions behandelt. Die Beschreibung der Core-php.ini-Einstellungen ist im Anhang verfügbar. Es werden jedoch wahrscheinlich nicht alle PHP-Direktiven im Handbuch erläutert. Für eine komplette Liste der in Ihrer PHP-Version verfügbaren Einstellungen lesen Sie bitte die gut kommentierte php.ini. Möglicherweise kann die » aktuellste php.ini aus unserem CVS ebenfalls hilfreich sein.

Beispiel #1 php.ini-Beispiel

; Jeder Text in einer Zeile nach einem Semikolon, welches nicht
; in Anführungszeichen steht, wird ignoriert
[php] ; Abschnittsmarkierungen (Text in eckigen Klammern) werden ebenfalls ignoriert
; Boolesche Werte können auf einen der folgenden Werte eingestellt werden:
;      true, on, yes
; oder false, off, no, none
register_globals = off
track_errors = yes

; Sie können Zeichenketten in Anführungszeichen einschließen
include_path = ".:/usr/local/lib/php"

; Backslashes werden wie alle anderen Zeichen behandelt
include_path = ".;c:\php\lib"

Seit PHP 5.1.0 ist es möglich, sich auf bereits definierte .ini-Variablen innerhalb der .ini-Dateien zu beziehen. Zum Beispiel: open_basedir = ${open_basedir}":/new/dir".

Wie man Konfigurationseinstellungen ändert

Installation und Konfiguration

Last updated: Fri, 14 Nov 2008

add a note User Contributed Notes
Laufzeiteinstellungen

georgeATdlouhyDOTinfo
24-Oct-2008 08:10


PHP 5.2.6 & Apache 2.2

----------------------

If you tried everything above and you server is not executing php script, look in php.ini at value:



short_open_tag = Off 

;it does not recognise '<?', only '<? php' or '<script>'



Some editors come with '<?' as default, like mine did. After two days I finally found out...

php at chrismonster dot com
27-Jul-2008 08:33


w2k, apache 1.3.29, php 5.2.6: c:\php\php.ini was not found until the environment variable PHPRC was set to "c:\php", even though php was used as a module, not CGI.



just adding c:\php to the path was not adequate.



phpinfo() still shows "Configuration File (php.ini) Path" to be C:\WINNT, but "Loaded Configuration File" now correctly displays "C:\php\php.ini".



initially the problem appeared to be simply that the mysql extension was not loading; in fact, the problem was more fundamental (php.ini not found) but because php will still work with defaults, this was not obvious.

pg_vlad at hotmail dot com
02-Jul-2008 07:41


On my Debian system I wrestled with something similar after apt-get ting updates for PHP and MYSQL, turns out the apt-get install worked great but broke my libphp module under apache. Once this module was deleted, I was able to rebuild it under PHP using ./configure



All works well now.

Anonymous
07-Feb-2008 12:03


Hello,



Having tried EVERYTHING on every php / mysql site to get php5.2.5 to talk to mysql server 5.0 (including all php.ini settings, all dlls, and many more ...)



Please try this: set Apache2.2 service Startup Type to MANUAL.  If not, it does not see to reload php.ini, no matter how many times you stop and start.



After 2 days, I finally see mysql info for <?php phpinfo(); ?>



Hope this helps!!

DK

jaw at jawspeak dot com - Jonathan Andrew Wolte
26-Jun-2007 03:01


Be sure to use double quotes in the php.ini file. For instance:



(lines broken for readability)



this will work:

# xdebug debugging

zend_extension="/usr/local/php5/lib/php/extensions

/no-debug-non-zts-20060613/xdebug.so"



this won't:

# xdebug debugging

zend_extension='/usr/local/php5/lib/php/extensions

/no-debug-non-zts-20060613/xdebug.so'



You'll get this error: 

Failed loading '/usr/local/php5/lib/php/extensions/

no-debug-non-zts-20060613/xdebug.so':  (null)



So... double quotes are the way! I know this is obvious, but it's a good thing to remember for the php.ini file.

alvaro at demogracia dot com
16-Jun-2007 03:01


About Apache 2.0 module:



For whatever reason, the Windows installer for PHP/5.2.3 tries to set the PHPIniDir directive using "\\" as directory separator:



PHPIniDir "C:\\Archivos de programa\\PHP\\"



It didn't work for me until I edited httpd.conf and replaced it with "/":



PHPIniDir "C:/Archivos de programa/PHP/"

henrick at streamsec dot se
01-Apr-2007 03:07


In order to get PHP 5.2 stable running on Windows Server 2003 x64 (IIS 6.0), I discovered three things (in addition to the other comments above):



* Some PHP web applications make use of the SCRIPT_NAME server variable which is not available under CGI. You have to use php5isapi.dll, which is a 32 bit dll, so you have to run IIS in 32 bit mode. Confer http://support.microsoft.com/kb/894435. This applies to all ISAPI extensions and not just ASP.NET.



* It appears you must leave the doc_root entry in php.ini blank. At least, that is what finally made my installation work. (Note that others have suggested to set it to e.g. C:\inetpub\wwwroot or equivalent. That won't work if your server hosts more than one domain, each placed in a separate directory.)



* If you are e.g. using MySQL you will have to edit php.ini. In order for it to be found, you must set the PHPRC system environment variable or the registry entry. Note that if you edit the registry using regedit.exe, the PHP key should be placed under the [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node] key. This happens automatically if you set it using a 32 bit legacy application.

gprochnow AT PINT DOT COM
29-Mar-2007 11:19


Run php 4 and php 5.2.x on the same machine with IIS 6.0 as ISAPI.



1. Extract the ZIP packages of both php 4 & php 5 (not the Windows Installer) to c:\php4 & c:\php5 respectively



2. Setup the corresponding php.ini files in c:\php4 and c:\php5



3. Add the Web Service Extensions for php4 and php5. For php4 use c:\php4\sapi\php4isapi.dll, php5 use c:\php5\php5isapi.dll



4. Add the following registry keys:



HKEY_LOCAL_MACHINE\SOFTWARE\PHP\5\IniFilePath -> c:\php5



HKEY_LOCAL_MACHINE\SOFTWARE\PHP\IniFilePath -> c:\php4



5. Add c:\php4 to the PATH environment variable.



6. Associate each web site in IIS with the corresponding php version.



7. Reboot



Note: That should work, test with phpinfo() in each site. You may need to refer to the php documentation if we missed any other settings.

cduke420 at gmail dot com
08-Jan-2007 08:16


[ When php run as Apache Module ]

DOCUMENT_ROOT .htaccess

+======================================+

SetEnv PHPRC /home/user/dir-containing-phpinifile

+======================================+



[ When php run as CGI ]

Place your php.ini file in the dir of your cgi'd php binary, in this case /cgi-bin/

DOCUMENT_ROOT .htaccess

+======================================+

AddHandler php-cgi .php .htm

Action php-cgi /cgi-bin/php5.cgi

+======================================+



[ PHP run as cgi with wrapper (for FastCGI) ]

Your wrapper script should look something like:

+======================================+

#!/bin/sh

export PHP_FCGI_CHILDREN=3

exec /user/htdocs/cgi-bin/php.cgi -c /home/user/php.ini

+======================================+



original article:

http://www.askapache.com/2007/php/custom-phpini-tips-and-tricks.html

Alonso
18-Nov-2006 02:21


Setting php.ini location for PHP working as Apache module (without use SetEnv directive in httpd.conf):



Before start Apache, set the PHPRC environment variable to the path where php.ini should be loaded, for example:



    PHPRC=/etc/php4/apache-another-path

    export PHPRC



In Debian we can do this way:



    In /etc/init.d/apache (the script that loads apache web server) we have this line:



    ENV="env -i LANG=C PATH=/bin:/usr/bin:/usr/local/bin"



    Set to this:



    ENV="env -i LANG=C PATH=/bin:/usr/bin:/usr/local/bin PHPRC=/etc/php4/apache-another-path"



Then wen you reload apache the php.ini will be loaded in the directory configured in PHPRC environment variable.

Trevor Blackbird > yurab.com
11-Apr-2006 01:50


You can use also use the predefined PHP_SAPI constant instead of php_sapi_name().

c dot affolter at stepping-stone dot ch
13-Mar-2006 03:38


For those people who want to use the PHPRC environment variable:

You have to specify the path to the directory containing your php.ini, not the direct path to the php.ini.



Example (php.ini resides in /your/path/php.ini):

right:

export PHPRC=/your/path



wrong:

export PHPRC=/your/path/php.ini

randy AT rcs-comp DOT com
26-May-2005 10:47


(copied from another page)

Please note that the SetEnv PHPRC "directory/to/phpini/" only works when using PHP as CGI, but _not_ when you use the PHP Apache Module!

Jorrit Schippers
26-May-2004 02:33


For IIS users: If you experience high parsetimes, try to set output_buffering to On. IIS has problems with scripts outputting many small pieces of text, and with output_buffering = On, PHP sends the whole page to IIS in one piece.

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Wie man Konfigurationseinstellungen ändert

Installation und Konfiguration

Last updated: Fri, 14 Nov 2008