You should be able to download the mailparse source, comment out the test for HAVE_MBSTRING in mailparse.c (around line 34), and build it normally.
Here’s what I did in Ubuntu 16.04 (assume ‘sudo’ when necessary):
cd /tmp
apt-get install php7.0-dev
pecl download mailparse
tar xvzf mailparse-3.0.2.tgz
cd mailparse-3.0.2
phpize
./configure
sed -i \
's/^\(#error .* the mbstring extension!\)/\/\/\1/' \
mailparse.c
make
make install
Then you just need to enable the mailparse.so module in your PHP configuration.
For Ubuntu 16.04 and PHP-FPM, you’d use:
echo "extension=mailparse.so" > \
/etc/php/7.0/fpm/conf.d/30-mailparse.ini
service php7.0-fpm reload
How to Install the PHP Mailparse Extension
The PHP mailparse extension provides functions for parsing and working with email messages. It can deal with RFC 822 and RFC 2045 (MIME) compliant messages. Mailparse is stream-based, meaning it does not keep in-memory copies of the files it processes and so is very resource efficient when dealing with large messages.
Install Mailparse on PHP 7.0 or 7.1
To install this extension on PHP 7.X, SSH in to your server as root and run the following commands:
sudo apt-get install gcc make autoconf libc-dev pkg-config sudo pecl7.X-sp install --nodeps mailparse sudo bash -c "echo extension=mailparse.so > /etc/php7.0-sp/conf.d/mailparse.ini" sudo service php7.X-fpm-sp restart
Install Mailparse on PHP 5.4, 5.5, or 5.6
To install this extension on PHP 5.X, SSH in to your server as root and run the following commands:
sudo apt-get install gcc make autoconf libc-dev pkg-config sudo pecl5.X-sp install --nodeps mailparse-2.1.6 sudo bash -c "echo extension=mailparse.so > /etc/php5.X-sp/conf.d/mailparse.ini" sudo service php5.X-fpm-sp restart
Verify the Installation
You can verify the mailparse extension is installed by running this command:
phpX.Y-sp -i | grep mailparse
You should see output such as the following:
/etc/phpX.Y-sp/conf.d/mailparse.ini, mailparse mailparse support => enabled mailparse.def_charset => us-ascii => us-ascii