$re = '/^\s+(?:re)?start.*?(haproxy_check).*?;;/sm';
$str = 'case "$1" in
start)
echo -n "Starting haproxy "
## Start daemon with startproc(8). If this fails
## the return value is set appropriately by startproc.
haproxy_check
/sbin/startproc $HAPROXY_BIN -D -f $HAPROXY_CONF -p $HAPROXY_PID
# Remember status and be verbose
rc_status -v
;;
stop)
echo -n "Shutting down haproxy "
## Stop daemon with killproc(8) and if this fails
## killproc sets the return value according to LSB.
/sbin/killproc -TERM $HAPROXY_BIN
# this is additional forcing kill command to ensure that all processes are stopped.
/usr/bin/killall -9 $HAPROXY_BIN || true
# Remember status and be verbose
rc_status -v
;;
try-restart|condrestart)
## Do a restart only if the service was active before.
## Note: try-restart is now part of LSB (as of 1.9).
## RH has a similar command named condrestart.
if test "$1" = "condrestart"; then
echo "${attn} Use try-restart ${done}(LSB)${attn} rather than condrestart ${warn}(RH)${norm}"
fi
$0 status
if test $? = 0; then
# we us reload here for a graceful restart during update
$0 reload
else
rc_reset # Not running is not a failure.
fi
# Remember status and be quiet
rc_status
;;
restart)
## Stop the service and regardless of whether it was
## running or not, start it again.
$0 stop
$0 start
haproxy_check
# Remember status and be quiet
rc_status
;;
check)
## Stop the service and regardless of whether it was
## running or not, start it again.
echo -n "Checking config of haproxy "
haproxy_check
rc_status -v
;;
reload|force-reload)
## Like force-reload, but if daemon does not support
## signaling, do nothing (!)
haproxy_check
# If it supports signaling:
echo -n "Reload service haproxy "
$HAPROXY_BIN -p $HAPROXY_PID -D -f $HAPROXY_CONF -sf $(cat $HAPROXY_PID)
rc_status -v
;;
status)
echo -n "Checking for service haproxy "
## Check status with checkproc(8), if process is running
## checkproc will return with exit status 0.
# Return value is slightly different for the status command:
# 0 - service up and running
# 1 - service dead, but /var/run/ pid file exists
# 2 - service dead, but /var/lock/ lock file exists
# 3 - service not running (unused)
# 4 - service status unknown :-(
# 5--199 reserved (5--99 LSB, 100--149 distro, 150--199 appl.)
# NOTE: checkproc returns LSB compliant status values.
/sbin/checkproc $HAPROXY_BIN
# NOTE: rc_status knows that we called this init script with
# "status" option and adapts its messages accordingly.
rc_status -v
;;
probe)
## Optional: Probe for the necessity of a reload, print out the
## argument to this init script which is required for a reload.
## Note: probe is not (yet) part of LSB (as of 1.9)
test $HAPROXY_CONF -nt $HAPROXY_PID && echo reload
;;
*)
echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload|probe}"
exit 1
;;
esac';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php