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I'm having trouble when installing an older version of PHP (5.1) on a Ubuntu machine. I've tried to downgrade it without success using apt-get, so I tried to install from source. After the installation, typing php -v in the terminal results in the correct version (i.e. 5.1), but the version that apache uses keep the same (the older one: 5.4) if I view it through <?php phpinfo().

How do I add the installation I just did to apache in place of the older one? I need to remove the older version and make apache recognize the version I just installed.

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You will have to use the older version's so files in apache's confs, and restart apache for it to take effect. On Ubuntu 14.04, see /etc/apache2/mods-available/php5.load:

LoadModule php5_module /usr/lib/apache2/modules/libphp5.so

Update above line in the file to point to the equivalent so for php 5.1.

  • How do I find the path for the new version installed from source? – Keyne Viana Feb 19 '15 at 18:24
  • That would depend on what flags you used to build PHP. Perhaps a build path or directory to build in? Look in that directory for a .so file. It may have a different name in PHP 5.1. – KM. Feb 19 '15 at 19:42

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