Component Update Could Not Copy Php Install File

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This section holds common questions about the way to install PHP. PHP is available for almost any OS, and almost any web server.

To install PHP, follow the instructions in Installation and Configuration.

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Why shouldn't I use Apache2 with a threaded MPM in a production environment?

PHP is glue. It is the glue used to build cool web applications by sticking dozens of 3rd-party libraries together and making it all appear as one coherent entity through an intuitive and easy to learn language interface. The flexibility and power of PHP relies on the stability and robustness of the underlying platform. It needs a working OS, a working web server and working 3rd-party libraries to glue together. When any of these stop working PHP needs ways to identify the problems and fix them quickly. When you make the underlying framework more complex by not having completely separate execution threads, completely separate memory segments and a strong sandbox for each request to play in, further weaknesses are introduced into PHP's system.

If you want to use a threaded MPM, look at a FastCGI configuration where PHP is running in its own memory space.

Unix/Windows: Where should my php.ini file be located?

By default on Unix it should be in /usr/local/lib which is <install-path>/lib. Most people will want to change this at compile-time with the --with-config-file-path flag. You would, for example, set it with something like:

And then you would copy php.ini-development from the distribution to /etc/php.ini and edit it to make any local changes you want.

On Windows the default path for the php.ini file is the Windows directory. If you're using the Apache webserver, php.ini is first searched in the Apaches install directory, e.g. c:program filesapache groupapache. This way you can have different php.ini files for different versions of Apache on the same machine.

See also the chapter about the configuration file.

Unix: I installed PHP, but every time I load a document, I get the message 'Document Contains No Data'! What's going on here?

This probably means that PHP is having some sort of problem and is core-dumping. Look in your server error log to see if this is the case, and then try to reproduce the problem with a small test case. If you know how to use 'gdb', it is very helpful when you can provide a backtrace with your bug report to help the developers pinpoint the problem. If you are using PHP as an Apache module try something like:

  • Stop your httpd processes

  • gdb httpd

  • Stop your httpd processes

  • > run -X -f /path/to/httpd.conf

  • Then fetch the URL causing the problem with your browser

  • > run -X -f /path/to/httpd.conf

  • If you are getting a core dump, gdb should inform you of this now

  • type: bt

  • You should include your backtrace in your bug report. This should be submitted to » https://bugs.php.net/

If your script uses the regular expression functions (preg_match() and friends), you should make sure that you compiled PHP and Apache with the same regular expression package. This should happen automatically with PHP and Apache 1.3.x

Unix: I installed PHP using RPMS, but Apache isn't processing the PHP pages! What's going on here?

Assuming you installed both Apache and PHP from RPM packages, you need to uncomment or add some or all of the following lines in your httpd.conf file:

And add: .. to the global properties, or to the properties of the VirtualDomain you want to have PHP support added to.
Unix: I patched Apache with the FrontPage extensions patch, and suddenly PHP stopped working. Is PHP incompatible with the Apache FrontPage extensions?

No, PHP works fine with the FrontPage extensions. The problem is that the FrontPage patch modifies several Apache structures, that PHP relies on. Recompiling PHP (using 'make clean ; make') after the FP patch is applied would solve the problem.

Unix/Windows: I have installed PHP, but when I try to access a PHP script file via my browser, I get a blank screen.

Do a 'view source' in the web browser and you will probably find that you can see the source code of your PHP script. This means that the web server did not send the script to PHP for interpretation. Something is wrong with the server configuration - double check the server configuration against the PHP installation instructions.

Unix/Windows: I have installed PHP, but when try to access a PHP script file via my browser, I get a server 500 error.

Something went wrong when the server tried to run PHP. To get to see a sensible error message, from the command line, change to the directory containing the PHP executable (php.exe on Windows) and run php -i. If PHP has any problems running, then a suitable error message will be displayed which will give you a clue as to what needs to be done next. If you get a screen full of HTML codes (the output of the phpinfo() function) then PHP is working, and your problem may be related to your server configuration which you should double check.

Some operating systems: I have installed PHP without errors, but when I try to start Apache I get undefined symbol errors:

This has actually nothing to do with PHP, but with the MySQL client libraries. Some need --with-zlib, others do not. This is also covered in the MySQL FAQ.

Windows: I have installed PHP, but when I try to access a PHP script file via my browser, I get the error:

This error message means that PHP failed to output anything at all. To get to see a sensible error message, from the command line, change to the directory containing the PHP executable (php.exe on Windows) and run php -i. If PHP has any problems running, then a suitable error message will be displayed which will give you a clue as to what needs to be done next. If you get a screen full of HTML codes (the output of the phpinfo() function) then PHP is working.

Once PHP is working at the command line, try accessing the script via the browser again. If it still fails then it could be one of the following:

  • File permissions on your PHP script, php.exe, php5ts.dll, php.ini or any PHP extensions you are trying to load are such that the anonymous internet user ISUR_<machinename> cannot access them.
  • The script file does not exist (or possibly isn't where you think it is relative to your web root directory). Note that for IIS you can trap this error by ticking the 'check file exists' box when setting up the script mappings in the Internet Services Manager. If a script file does not exist then the server will return a 404 error instead. There is also the additional benefit that IIS will do any authentication required for you based on the NTLanMan permissions on your script file.
Component Update Could Not Copy Php Install File
Windows: I've followed all the instructions, but still can't get PHP and IIS to work together!

Make sure any user who needs to run a PHP script has the rights to run php.exe! IIS uses an anonymous user which is added at the time IIS is installed. This user needs rights to php.exe. Also, any authenticated user will also need rights to execute php.exe. And for IIS4 you need to tell it that PHP is a script engine. Also, you will want to read this faq.

When running PHP as CGI with IIS, PWS, OmniHTTPD or Xitami, I get the following error: Security Alert! PHP CGI cannot be accessed directly..

You must set the cgi.force_redirect directive to 0. It defaults to 1 so be sure the directive isn't commented out (with a ;). Like all directives, this is set in php.ini

Because the default is 1, it's critical that you're 100% sure that the correct php.ini file is being read. Read this faq for details.

How do I know if my php.ini is being found and read? It seems like it isn't as my changes aren't being implemented.

To be sure your php.ini is being read by PHP, make a call to phpinfo(). Near the top, there will be a listing called Configuration File (php.ini). This will tell you where PHP is looking for php.ini and whether or not it's being read. If just a directory PATH exists, then it's not being read, and you should put your php.ini in that directory. If php.ini is included within the PATH, it is being read.

If php.ini is being read and you're running PHP as a module, then be sure to restart your web server after making changes to php.ini

See also php_ini_loaded_file().

How do I add my PHP directory to the PATH on Windows?

On Windows 7, XP, Vista, 2008, 2012 and up:

  • Go to Control Panel and open the System icon (Start → Control Panel)

  • Go to the Advanced tab

  • Click on the 'Environment Variables' button

  • Look into the 'System Variables' pane

  • Find the Path entry (you may need to scroll to find it)

  • Double click on the Path entry

  • Enter your PHP directory at the end, including ';' before (e.g. ;C:php)

  • Press OK

On Windows 98/Me you need to edit the autoexec.bat file:

  • Open the Notepad (Start → Run and enter notepad)

  • Open the C:autoexec.bat file

  • Locate the line with PATH=C:WINDOWS;C:WINDOWSCOMMAND;... and add: ;C:php to the end of the line

  • Save the file and restart your computer

Note: Be sure to reboot after following the steps above to ensure that the PATH changes are applied.

The PHP manual used to promote the copying of files into the Windows system directory, this is because this directory (C:Windows, C:WINNT, etc.) is by default in the system's PATH. Copying files into the Windows system directory has long since been deprecated and may cause problems.

How do I make the php.ini file available to PHP on windows?

There are several ways of doing this. If you are using Apache, read their installation specific instructions (Apache 1, Apache 2), otherwise you must set the PHPRC environment variable:

On Windows:

  • Go to Control Panel and open the System icon (Start → Settings → Control Panel → System, or just Start → Control Panel → System)

  • Go to the Advanced tab

  • Click on the 'Environment Variables' button

  • Look into the 'System variables' pane

  • Click on 'New' and enter 'PHPRC' as the variable name and the directory where php.ini is located as the variable value (e.g. C:php)

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  • Press OK and restart your computer

On Windows 98/Me you need to edit the autoexec.bat file:

  • Open the Notepad (Start → Run and enter notepad)

  • Open the C:autoexec.bat file

  • Add a new line to the end of the file: set PHPRC=C:php (replace C:php with the directory where php.ini is located). Please note that the path cannot contain spaces. For instance, if you have installed PHP in C:Program FilesPHP, you would enter C:PROGRA~1PHP instead.

  • Save the file and restart your computer

Is it possible to use Apache content negotiation (MultiViews option) with PHP?

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If links to PHP files include extension, everything works perfect. This FAQ is only for the case when links to PHP files don't include extension and you want to use content negotiation to choose PHP files from URL with no extension. In this case, replace the line AddType application/x-httpd-php .php with:

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This solution doesn't work for Apache 1 as PHP module doesn't catch php-script.
Is PHP limited to process GET and POST request methods only?

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Component Update Could Not Copy Php Installation Files

No, it is possible to handle any request method, e.g. CONNECT. Proper response status can be sent with header(). If only GET and POST methods should be handled, it can be achieved with this Apache configuration:

Component Update Could Not Copy Php Installation File. Wp-config-sample.php

PHP 5.2.9.2 Install on XP Pro IIS 5.1 - phpinfo( ) results incorrect
Testing Date: 05.15.09
Background:
For several days now I, as a newbie, have been unsure if I had installed PHP correctly, or not. No matter what I did phpinfo( ) reported 'Configuratin File Path' as: “C:WINDOWS”. I was left to wonder what was wrong.
To help resolve the phpinfo() “issue”, I conducted a series of tests using two scripts:
The first is “test-php-ini-loaded.php”; it is stored in c:inetpubwwwroot, and has the following code:
<?php
$inipath
= php_ini_loaded_file();
if (
$inipath) {
echo
'Loaded php.ini: ' . $inipath;
} else {
echo
'A php.ini file is not loaded';
}
?>

The second script is simply calls phpinfo( ). It is named test.php, is stored in “c:inetpubwwroot”, and has the following code:
<?php phpinfo( ); ?>

My Dev Environment:
1. Windows XP Pro SP3
2. IIS 5.1 / MMC 3.0
3. PHP 5.2.9.2 – phpMyAdmin not yet installed
4. (plus MySQL 5.1, etc.)
5. Install location is on my local E: drive
The Tests:
Test 1:
a. PHPRC environment variable and IniFilePath Registry left in place and active
b. Verified no other copies of php.ini exist on the system other than in my E:PHP folder
c. Renamed php.ini to hold-php.ini
d. Stopped and started IIS (“net stop iisadmin” and “net start w3svc”)
e. Ran “test-php-ini-loaded.php” to check whether my php.ini is loaded. It is not.
f. Ran 'test.php'. “Loaded Configuration File” was empty, while “Configuration File (php.ini) Path” showed: C:WINDOWS.
Test 2:
a. Moved php.ini from E:PHP to C:WINDOWS
b. Stopped and started IIS
c. Ran 'test-php-ini-loaded.php' to check if my php.ini is loaded. It is not, which surprised me.
d. Ran 'test.php'. My php.ini is apparently not loaded, or found, by phpinfo( ), even though “Configuration File (php.ini) Path” reports it as being in C:WINDOWS.
e. Note: Per PHP’s “The configuration file” note, PHP's search order includes: “Windows directory (C:windows or C:winnt) (for Windows), ..”; but it apparently doesn’t or php.ini would have been found and displayed at “Loaded Configuration File”.
Test 3:
a. Left the solo copy of my php.ini in C:WINDOWS
b. Disabled PHPRC environment variable by renaming it to “Ex-PHPRC and saving the settings (note: for this test I left the Registry entry for PHP IniFilePath intact)
c. Stopped and started IIS
d. Ran 'test-php-ini-loaded.php' to check whether my php.ini is loaded. Predictably it is not found.
e. Ran the 'test.php'. Again, my php.ini file is reported as not found in C:WINDOWS though “Configuration File (php.ini) Path” reports it as being there.
Test 4:
a. To be thorough and eliminate all possible sources of “mis-direction” I deleted the PHP IniFilePath Registry entry (after backing up the Registry). The PHPRC environment variable was left disabled.
b. Stopped and started IIS
c. Ran 'test-php-ini-loaded.php' to check whether my php.ini is loaded. Predictably it is not.
d. Ran 'test.php'. Again, no change. My php.ini file is not found “Configuration File (php.ini) Path” reports it as being there.
Conclusions:
The first conclusion I came to is that, in the default download version of phpinfo( ), “Configuration File (php.ini) Path” is hard-wired to report C:WINDOWS whether php.ini is there or not. Further, that C:WINDOWS is not a default search location (at least not on XP).
However, given an otherwise “proper” setup, phpinfo() reporting C:WINDOWS as the value for “Configuration File (php.ini) Path” is merely misleading and is not actually harmful or indicative of a failed installation.
Thanks go to Peter Guy of www.peterguy.com who suggested the testing, and to Daniel Brown of www.php.net for some initial guidance.
P.S. This note is not meant to take anything away from PHP. It is a fine tool. The sole purpose of the testing was to confirm that my installation of PHP was correct.