Description:
------------
When the CURLOPT_RETURNTRANSFER option is set curl_exec returns the correct output when called from the command line, but FALSE when called through apache.

Configuration:
curl version: 7.18.2, apache 2.0.54

'./configure'  '--prefix=/usr/local' '--with-apxs2=/usr/bin/apxs2' '--with-config-file-path=/etc/php5/apache2' '--disable-debug' '--with-regex=php' '--disable-rpath' '--disable-static' '--with-pic' '--with-layout=GNU' '--with-pear=/usr/share/php' '--enable-calendar' --enable-sysvsem' '--enable-sysvshm' '--enable-sysvmsg' '--enable-bcmath' '--with-bz2' '--enable-ctype' '--with-db4' '--with-iconv' '--enable-exif' '--enable-ftp' '--with-gettext' '--enable-mbstring' '--with-pcre-regex=/usr/local' '--enable-shmop' '--enable-sockets' '--enable-wddx' '--enable-xml' '--with-xmlrpc' '--with-zlib' '--without-pgsql' '--with-kerberos=/usr' '--with-openssl=/usr' '--enable-zip' '--with-mime-magic=/usr/share/misc/file/magic.mime' '--with-exec-dir=/usr/lib/php5/libexec' '--without-mm' '--with-mysql' '--without-sybase-ct' '--with-gd=/usr/local' '--with-jpeg-dir=/usr' '--with-png-dir=/usr' '--with-xpm-dir=/usr' '--with-freetype-dir=/usr/local' '--enable-gd-native-ttf' '--with-curl=/usr/local'


Reproduce code:
---------------
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://some.url");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$converted = curl_exec($ch);
curl_close($ch);
var_dump($converted);

Expected result:
----------------
curl_exec returning the same output when the code runs either from the console or apache.

Actual result:
--------------
the expected output when the code runs from the command line, FALSE when run from within apache.

The error code returned is 28 (connection time-out), and curl_getinfo returns a negative value for CURLINFO_NAMELOOKUP_TIME.

No errors are logged in apache or system logs.