PHP extension allowing native interaction with systemd and journald
.deb based
sudo apt install php5-dev libsystemd-dev
.rpm based
sudo dnf install php-devel systemd-devel
phpize
./configure --with-systemd
make
sudo make install
Fedora
echo "extension=systemd.so" | sudo tee /etc/php.d/systemd.ini
Debian (PHP 5)
echo "extension=systemd.so" | sudo tee /etc/php5/mods-available/systemd.ini
sudo php5enmod systemd
echo "<?php echo sd_journal_send('MESSAGE=hello world');" | php
Quick example:
<?php
sd_journal_send('MESSAGE=Hello world.');
// message with priority "3" (warning) and identifier (also called *TAG*) set to "appname"
sd_journal_send('MESSAGE=Error message','PRIORITY=3', 'SYSLOG_IDENTIFIER=appname');"
Notes:
- Each argument must be in the form of a KEY=value pair, environmental variable style.
- Unlike the native C version of journald's
sd_journal_send(), printf-style substitution is not supported. Perform any substitution using PHP'ssprintf()or similar capabilities first. - The base message is usually sent in the form MESSAGE=hello. The MESSAGE field is, however, not required.
- Invalid arguments result in nothing recorded in the journal.
Quick way to view output with all fields as it comes in:
sudo journalctl -f --output=json
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