I want to import some tables with sql file in the plugin installation
exec('mysql -h db_host -u db_user -p password db_name < data.sql',
but $return_var is 127 and I have no clue why?!!
I changed file permissions and change php safe_mode but still not working. and I can run other simple commands like ls, and also I can run this command from outside of wordpress but not inside.
please help, thank you