GRASS and PHP - Revision history

Lucadelu: /* Simplified Method (for GRASS >= 6.4.x) */

2009-04-01T12:41:01Z

Simplified Method (for GRASS >= 6.4.x)

← Older revision		Revision as of 12:41, 1 April 2009
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	You can use a bash script following [[GRASS_and_Shell#GRASS_Batch_jobs\|this guide]] and the php functions [http://php.net/manual/en/function.putenv.php putenv] and [http://php.net/manual/en/function.system.php system].		You can use a bash script following [[GRASS_and_Shell#GRASS_Batch_jobs\|this guide]] and the php functions [http://php.net/manual/en/function.putenv.php putenv] and [http://php.net/manual/en/function.system.php system].

			'''VERY IMPORTANT''' Firstly you must control if SHELL enviroment for your web server is set. You can done a script like this

			<?php
			system ('export -p');
			?>

			and in your answer you must found SHELL=/bin/bash or something similar. If your SHELL enviroment isn't set you must editing the apache enviroments file (in debian and ubuntu is in /etc/apache2/envvars) and add a line with ''export SHELL=/bin/bash''

	With ''putenv'' you set the variable GRASS_BATCH_JOB=/path/to/your/bash/script and after you execute GRASS with the path to the gisbase/location/mapset as parameter in a ''system'' call. Remember gisbase, location and mapset must be accessible for the apache user (in debian and ubuntu www-data, use e.g., "ps -aef \| grep httpd" to figure out the user name). At the end of your php code you must deactivate the batch job mode. That's all.		With ''putenv'' you set the variable GRASS_BATCH_JOB=/path/to/your/bash/script and after you execute GRASS with the path to the gisbase/location/mapset as parameter in a ''system'' call. Remember gisbase, location and mapset must be accessible for the apache user (in debian and ubuntu www-data, use e.g., "ps -aef \| grep httpd" to figure out the user name). At the end of your php code you must deactivate the batch job mode. That's all.

Neteler: more "selling" title; langage cosmetics

2009-03-27T15:58:49Z

more "selling" title; langage cosmetics

← Older revision		Revision as of 15:58, 27 March 2009
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	Many thanks to Glynn Clements, Markus Neteler and Sharyn Namnath for code and help!		Many thanks to Glynn Clements, Markus Neteler and Sharyn Namnath for code and help!

	== ~~Another~~ Method ==		== Simplified Method (for GRASS >= 6.4.x) ==

	You can use a bash script following [[GRASS_and_Shell#GRASS_Batch_jobs\|this guide]] and the php functions [http://php.net/manual/en/function.putenv.php putenv] and [http://php.net/manual/en/function.system.php system].		You can use a bash script following [[GRASS_and_Shell#GRASS_Batch_jobs\|this guide]] and the php functions [http://php.net/manual/en/function.putenv.php putenv] and [http://php.net/manual/en/function.system.php system].

	With ''putenv'' you set the variable GRASS_BATCH_JOB=/path/to/your/bash/script and after you ~~run grass follow by your~~ gisbase, location ~~and~~ mapset ~~with~~ ''system''~~, remember~~ gisbase, location and mapset must be accessible ~~from~~ apache user (in debian and ubuntu www-data). At the end of your php code you must deactivate the batch job mode.		With ''putenv'' you set the variable GRASS_BATCH_JOB=/path/to/your/bash/script and after you execute GRASS with the path to the gisbase/location/mapset as parameter in a ''system'' call. Remember gisbase, location and mapset must be accessible for the apache user (in debian and ubuntu www-data, use e.g., "ps -aef \| grep httpd" to figure out the user name). At the end of your php code you must deactivate the batch job mode. That's all.

	=== Example ===		=== Example ===

	Example		Example:

	<?php		<?php
	putenv ('GRASS_BATCH_JOB=/path/to/your/bash/script');		putenv ('GRASS_BATCH_JOB=/path/to/your/bash/script');
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	system ('unset GRASS_BATCH_JOB);		system ('unset GRASS_BATCH_JOB);
	?>		?>

	~~Thanks to Markus Neteler for the helps~~

	[[Category:Development]]		[[Category:Development]]
	[[Category:Linking to other languages]]		[[Category:Linking to other languages]]

Lucadelu: /* Another Method */

2009-03-27T15:31:18Z

Another Method

← Older revision		Revision as of 15:31, 27 March 2009
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	?>		?>

	~~Thank's~~ to Markus Neteler for the helps		Thanks to Markus Neteler for the helps

	[[Category:Development]]		[[Category:Development]]
	[[Category:Linking to other languages]]		[[Category:Linking to other languages]]

Lucadelu at 15:30, 27 March 2009

2009-03-27T15:30:08Z

@@ Line 150: / Line 150: @@
 Many thanks to Glynn Clements, Markus Neteler and Sharyn Namnath for code and help!
 [[Category:Development]]
 [[Category:Linking to other languages]]

⚠️Harrikoo: /* Redirecting STDOUT and STDERR */

2006-11-04T23:22:58Z

Redirecting STDOUT and STDERR

← Older revision		Revision as of 23:22, 4 November 2006
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	'''system("g.version > version.txt 2> version_err.txt");'''		'''system("g.version > version.txt 2> version_err.txt");'''

			Another option is to use PHP function [http://www.php.net/proc_open proc_open()] which gives you means to use stdin, stdout and stderr in a flexible fashion. It is especially handy if you want to feed data to a GRASS module.

	===Deleting prior output files===		===Deleting prior output files===

⚠️Harrikoo: /* One working solution */

2006-11-04T23:18:32Z

One working solution

← Older revision		Revision as of 23:18, 4 November 2006
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	====One working solution====		====One working solution====

			Thist works at least on Debian with Apache. Contrary to the common settings where Apache is running as user 'nobody', in Debian, the Apache user is 'www-data' and it belongs to the group 'www-data':

	Make sure the permissions of your location directory include the group write permission, and your username also belongs to the group ''www-data''.		Make sure the permissions of your location directory include the group write permission, and your username also belongs to the group ''www-data''.
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	In the same way, you can also set up the database access rights.		In the same way, you can also set up the database access rights.

	This approach has the nice feature, that you don't have to worry about the <tt>.grassrc6</tt> or <tt>.grasslogin6</tt> files; the right data will go to the right place automatically, most probably in <tt>/var/www</tt>.		This approach has the nice feature, that you don't have to worry about the <tt>.grassrc6</tt> or <tt>.grasslogin6</tt> files; the right data will go to the right place automatically, most probably in <tt>/var/www</tt>, depending where the $HOME setting of Apache points to.

	--[[User:Harrikoo\|Harri]] 18:44, 4 November 2006 (CET)		--[[User:Harrikoo\|Harri]] 18:44, 4 November 2006 (CET)

⚠️Harrikoo: /* Access Rights */

2006-11-04T17:44:57Z

Access Rights

@@ Line 124: / Line 124: @@
 If your web application only reads the data, you can create a single mapset directory owned by the account under which the PHP script runs,
 then either use g.mapsets or explicit map@mapset references to access maps in other mapsets.
 ===Resources and examples===

Neteler: cat

2006-07-05T12:23:40Z

cat

← Older revision		Revision as of 12:23, 5 July 2006
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	===Resources and examples===		===Resources and examples===

	~~A Grass Map on the fly~~: http://grass.itc.it/spearfish/~~php_grassmap~~.php		Earthquake epicenters dynamically inserted (see source code link there at page bottom): http://grass.itc.it/spearfish/php_grass_earthquakes.php

	~~Earthquake epicenters dynamically inserted~~: http://grass.itc.it/spearfish/~~php_grass_earthquakes~~.php		A simple GRASS Map on the fly: http://grass.itc.it/spearfish/php_grassmap.php

	related e-mails: http://grass.itc.it/pipermail/grass5/2004-August/015106.html		related e-mails: http://grass.itc.it/pipermail/grass5/2004-August/015106.html
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	[[Category:Development]]		[[Category:Development]]
			[[Category:Linking to other languages]]

Neteler: +cat

2006-06-16T19:51:37Z

+cat

← Older revision		Revision as of 19:51, 16 June 2006
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	Many thanks to Glynn Clements, Markus Neteler and Sharyn Namnath for code and help!		Many thanks to Glynn Clements, Markus Neteler and Sharyn Namnath for code and help!

			[[Category:Development]]

Neteler: fix

2006-05-27T21:01:31Z

fix

← Older revision		Revision as of 21:01, 27 May 2006
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	'''system("rm -f version_err.txt");'''		'''system("rm -f version_err.txt");'''

	===The ~~Grass~~ Resource File===		===The GRASS Resource File===

	You may copy your .grassrc6 file to your script directory and e.g. name it .grassrc6_php. It contains the follwing lines and has to be adapted to fit into your setup:		You may copy your .grassrc6 file to your script directory and e.g. name it .grassrc6_php. It contains the follwing lines and has to be adapted to fit into your setup:
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	<pre>		<pre>
	GISDBASE: /gd		GISDBASE: /gd
	GRASS_GUI: ~~tcltk~~		GRASS_GUI: text
	MAPSET: etopo5		MAPSET: etopo5
	LOCATION_NAME: smallworld		LOCATION_NAME: smallworld
	MONITOR=PNG		MONITOR: PNG
	</pre>		</pre>