Installing PECL fails, raphf.so not found

Question

I am trying to install MediaWiki on my VPS running Ubuntu 14.10 and php 5.5.9-1ubuntu4.11. I installed php5 using this guide . Now am seeing the MediaWiki setup file. It tells me that the optional PECL is missing: "Warning: The intl PECL extension is not available to handle Unicode normalization, falling back to slow pure-PHP implementation."

phpinfo() confirms this (CTRL+F for "PECL" = 0 hits).

However, if I run sudo pecl install pecl_http I get an error:

...
checking for ext/raphf support... no
    configure: error: Please install pecl/raphf and activate extension=raphf.so in your php.ini
    ERROR: `/tmp/pear/temp/pecl_http/configure --with-http-zlib-dir=/usr --with-http-libcurl-dir=/usr --with-http-libevent-dir=/usr --with-http-libidn-dir=/usr' failed

The same error as this prior question on SO . I have tried all the things mentioned in the answers there including adding the three "extension=" lines to php.ini.

Trying to install raphf leads to:

sudo pecl install raphf
pecl/raphf is already installed and is the same as the released version 1.1.0
install failed

phpinfo() lists RAPHF 1.1.0 as installed too. A script to test (accessed via the browser, not through console):

echo extension_loaded(raphf) ? "raphf loaded" : "raphf not loaded";

Confirms that it is loaded. Script from a prior SO question that received no answers.

If I search for eg the raphf.so file on the server, it is not found. Same is true for the other three extensions added to php.ini (mentioned in the other questions).

Basically, RAPHF seems to be installed and not installed at the same time. I have run out of earlier questions and guides to consult, so I come here. Any ideas?

Answer 1

Install missing intl extension:

sudo apt-get install php5-intl

pecl_http and pecl_intl are two different things, btw.

Basically, RAPHF seems to be installed and not installed at the same time.

Webserver's PHP and console PHP use different php.ini's . So when you phpinfo(); on the webserver and you see module X, doesn't mean it's available via php-cli (pecl == console == php-cli).