PHP PDO simple insert or update function

Question

In trying to create a simple PHP PDO update function that if the field is not found would insert it, I created this little snippet.

function updateorcreate($         


        

Answer 1

try,

    PDO::exec() 

returns 1 if inserted. 2 if the row has been updated.

for prepared statements,

    PDOStatement::execute() 

You can try,

    PDOStement::rowCount()

Answer 2

You will first need to execute it.

Apart from that, this is a dodgy way of doing this. It would be better to start a transaction, do a SELECT and then determine what to do (INSERT or UPDATE). Just checking whether the UPDATE query succeeded doesn't suffice, it succeeds when no row is found too.

Answer 3

You are assigning $pro to the prepare, not the execute statement.

Having said that, if you are using mysql you can use the insert... on duplicate key update syntax.

insert into $table (field, value) values (:name, :value) on duplicate key update value=:value2

You can't use the same bound param twice, but you can set two bound params to the same value.

Edit: This mysql syntax will only work where a key (primary or another unique) is present and would cause an insert to fail.

Answer 4

If it's mysql-only you could try INSERT INTO ... ON DUPLICATE KEY UPDATE

http://dev.mysql.com/doc/refman/5.0/en/insert-on-duplicate.html