Debugging a php's script startup

[C. L. Martinez]

Hi all,

 I am trying to setup a startup file for TT-Rss (installed under OpenBSD 6.2 
host, fully patched). This is the script:

#!/bin/sh -x
#

daemon="/usr/local/bin/php-7.0"
daemon_flags="/var/www/htdocs/rss/update_daemon2.php --log /tmp/update_rss.log"
daemon_user="www"

. /etc/rc.d/rc.subr

pexp="${MODPHP_BIN} ${daemon}${daemon_flags:+ ${daemon_flags}}"

rc_bg=YES
rc_reload=NO

rc_post() {
        rm -f /var/www/htdocs/rss/lock/update_daemon.lock
}

rc_cmd $1

 And when I try to start it, this is the output:

root@rssweb:/etc/rc.d# ./tt_rss start
+ daemon=/usr/local/bin/php-7.0
+ daemon_flags=/var/www/htdocs/rss/update_daemon2.php --log /tmp/update_rss.log
+ daemon_user=www
+ . /etc/rc.d/rc.subr
+ _rc_actions=start stop restart reload check
+ readonly _rc_actions
+ [ -n  ]
+ basename ./tt_rss
+ _name=tt_rss
+ _rc_check_name tt_rss
+ [ -n /usr/local/bin/php-7.0 ]
+ unset _RC_DEBUG _RC_FORCE
+ getopts df c
+ shift 0
+ _RC_RUNDIR=/var/run/rc.d
+ _RC_RUNFILE=/var/run/rc.d/tt_rss
+ _rc_do _rc_parse_conf
+ eval _rcflags=${tt_rss_flags}
+ _rcflags=
+ eval _rcrtable=${tt_rss_rtable}
+ _rcrtable=
+ eval _rcuser=${tt_rss_user}
+ _rcuser=
+ eval _rctimeout=${tt_rss_timeout}
+ _rctimeout=
+ getcap -f /etc/login.conf tt_rss
+ > /dev/null 
+ 2>&1 
+ daemon_class=daemon
+ [ -z  ]
+ daemon_rtable=0
+ [ -z www ]
+ [ -z  ]
+ daemon_timeout=30
+ [ -n  -o start != start ]
+ [ -n  ]
+ [ -n  ]
+ [ -n  ]
+ [ -n  ]
+ [ -n  ]
+ readonly daemon_class
+ unset _rcflags _rcrtable _rcuser _rctimeout
+ pexp=/usr/local/bin/php-7.0 /var/www/htdocs/rss/update_daemon2.php --log 
/tmp/update_rss.log
+ rcexec=su -l -c daemon -s /bin/sh www -c
+ [ 0 -eq 0 ]
+ pexp= /usr/local/bin/php-7.0 /var/www/htdocs/rss/update_daemon2.php --log 
/tmp/update_rss.log
+ rc_bg=YES
+ rc_reload=NO
+ rc_cmd start
tt_rss(failed)

 pexp's option seems good ... I think the problem is with 'www' user and with 
this command: "su -l -c daemon -s /bin/sh www -c". Launching from console 
returns an error:

root@rssweb:/etc/rc.d# su -l -c daemon -s /bin/sh www -c 
'/usr/local/bin/php-7.0 /var/www/htdocs/rss/update_daemon2.php --log 
/tmp/update_rss.log'
PHP Warning:  mysqli_connect(): (HY000/2002): Can't connect to local MySQL 
server through socket '/var/run/mysql/mysql.sock' (2 "No such file or 
directory") in /var/www/htdocs/rss/classes/db/mysqli.php on line 8
Unable to connect to database (as rss to localhost, database dbrss): Can't 
connect to local MySQL server through socket '/var/run/mysql/mysql.sock'

 mysql's socket is created under www's chroot like in pkg-readme says: 
srwxrwxrwx  1 _mysql  _mysql  0 Nov  8 17:45 /var/www/var/run/mysql/mysql.sock

 If I am not wrong, then, how can I configure this startup script?

Thanks
-- 
Greetings,
C. L. Martinez