When inserting data into a PostgreSQL database through PHP, should I embed the data in a
To avoid SQL injection, you want to call methods that accepts SQL parameters as method parameters. That way, your SQL library can make sure that the parameters are properly escaped. Never build your own SQL-statements by "appending" string-fragments. If you do, you are responsible for SQL-escaping the parameters. This is hard to get right.
Therefore, you should prefer
This is wrong (because you must remember to escape the $arg1-parameter. Which is hard.):
pg_query("INSERT INTO TABLE ... VALUES " . $arg1 . ";");
Right (because the smart guys at PostgresQL know how to escape your parameter):
pg_query_params("INSERT INTO TABLE ... VALUES $1", "FooBar");