Passing NULL from PHP to MySQL for auto increment -


so have database setup in mysql 3 columns. first column 'idnum' auto increments users id numbers. second , third first , last names respectfully. problem when go send the names db via query string in php file, couple different errors back...

when send query:

$sql = "insert namesdb values('null', 'firstname', 'lastname')"; $result = $db->query($sql);

i error: "incorrect integer value: 'null' column 'idnum' @ row 1." because column 1 int type.

but when send query:

$sql = "insert namesdb values(".null.", 'firstname', 'lastname')"; $result = $db->query($sql);

i syntax error...

any idea on heck i'm doing wrong here??

thank help!

it should be:

$sql = "insert namesdb values(null, 'firstname', 'lastname')"; $result = $db->query($sql);

'null' string of "null".

though option (the 1 go with) list columns explicitly:

insert namesdb (firstname, lastname) values ('firstname', 'lastname')

i prefer listing columns because more future proof, , it's easier see what's going on. imagine if columns rearranged, added, or removed in future. fixing queries going massive pain if have remove 6th unnamed parameter everywhere (for example).


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