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i tried elgg 1.8.0.1 on windows XP and it installed successfully but when i tried on fedora 12 it is not able to install. here is what happens i extracted the zip file for elgg 1.8.0.1 in /var/www/html now when i use firefox to go to the url http://localhost/elgg-1.8.0.1 it asks me whether i want to open or save install.php ,but when i open it with a text editor or if i save it and then open it its an empty file. The size of file is 0 bytes. And when i use Konqueror to do the above it displays a timeout error instantly(at the moment i press enter).

i checked the error log of apache and it displays the following line

child pid 2147 exit signal Segmentation Fault(11)

I was able to install elgg 1.7.11 on fedora successfully,also i am able to run other php files nicely.I wonder what can go wrong *because elgg 1.8.0.1 installs successfully in windows XP. (Note:I have the appropriate permissions for reading writing and executing scripts in the elgg 1.8.0.1 directory)

UPDATE: i tried strace php install.php and i got a long trace of which i am only showing the last few lines 

mmap2(NULL, 11905, PROT_READ, MAP_SHARED, 3, 0) = 0xb77cb000
munmap(0xb77cb000, 11905)               = 0
close(3)                                = 0
getdents(4, /* 0 entries */, 32768)     = 0
time(NULL)                              = 1317422887

access("/usr/share/zoneinfo/Asia/Calcutta", R_OK) = 0

access("/var/www/html/elgg-1.8.0.1/engine/settings.php", R_OK) = -1 ENOENT (No such file or directory)
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV (core dumped) +++
Segmentation fault (core dumped)

Now any idea why there is this segmentation fault? I have read that infinite recursive function calls can cause seg faults but if that was the problem it wouldnt have run on windows. If i try to include a lot of files with include or require or require_once can it lead to php causing a segmentation fault?

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  • This sounds like there may be an issue with mod_php. Can you try creating a test PHP file with the contents, <?php phpinfo(); ?>? When you access it from your browser, what happens?
    – Andrew M.
    Sep 12, 2011 at 4:20
  • @Redmumba yes i can create other php files and they are working correctly.As my question says i was able to successfully install elgg 1.7.11.
    – lovesh
    Sep 14, 2011 at 9:53
  • My bad, I am blind! :) Just out of curiosity, have you tried doing something like executing it from the command line (i.e., php install.php)? Also, have you enabled PHP logging in your php.ini?
    – Andrew M.
    Sep 15, 2011 at 21:43
  • @Redmumba yes i have enabled logging and updated my question to show the errors.Thanks
    – lovesh
    Sep 20, 2011 at 18:13
  • The superglobal notices have nothing to do with the segfault; the $_SERVER array is unavailable when running the CLI. Which database engine are you using?
    – xofer
    Sep 20, 2011 at 18:22

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There was a bug in my php version. Updating to a later version solved the issue.

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