php connection database

This is my error code  when I log in 

Deprecated: Function ereg_replace() is deprecated in D:Hosting7349181htmlkhmermarketmemberSystemBasiclogin.php on line 12

Warning: mysql_num_rows() expects parameter 1 to be resource, boolean given in D:Hosting7349181htmlkhmermarketmemberSystemBasiclogin.php on line 19

 

This is error when I register 

Deprecated: Function ereg_replace() is deprecated in D:Hosting7349181htmlkhmermarketmemberSystemBasicjoin_form.php on line 13

Deprecated: Function ereg_replace() is deprecated in D:Hosting7349181htmlkhmermarketmemberSystemBasicjoin_form.php on line 14

Deprecated: Function ereg_replace() is deprecated in D:Hosting7349181htmlkhmermarketmemberSystemBasicjoin_form.php on line 15

Deprecated: Function ereg_replace() is deprecated in D:Hosting7349181htmlkhmermarketmemberSystemBasicjoin_form.php on line 16

Deprecated: Function ereg_replace() is deprecated in D:Hosting7349181htmlkhmermarketmemberSystemBasicjoin_form.php on line 17

Deprecated: Function ereg_replace() is deprecated in D:Hosting7349181htmlkhmermarketmemberSystemBasicjoin_form.php on line 21
Unknown column ‘country’ in ‘field list’

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