php postgres UPDATE: check for success - php

Question

I'm attempting to UPDATE my postgres table on Heroku and have been blocked by the eccentricity of the UPDATE statement.
My initial guess was to say:
$query = pg_query($someDB, $updateQuery);
and then check if it is false, but to no avail. Here's the troublesome snippet:
$update_query = "UPDATE jellybeans SET $form[1]=$data[1], $form[2]=$data[2] WHERE $form[0]='$data[0]'";
echo 'attempting update: ' . $update_query . '<br>';
$update = pg_query($connect, $update_query);
echo "Rows updated: ", pg_affected_rows($update);
//if update failed, push to the table
How does one check on statements like INSERTS, DELETES, and the like? I'm surprised affected_rows doesn't return anything meaningful. Much appreciated.
*EDIT: * Using a SELECT query first yielded the best result:
$exists_query = "SELECT * FROM jellybeans WHERE $form[0]='$data[0]'";
$exists = pg_query($connect, $exists_query);
if($row = pg_fetch_row($exists)){
$update_query = "UPDATE jellybeans SET $form[1]=$data[1], $form[2]=$data[2] WHERE $form[0]='$data[0]' RETURNING *";
echo '<br>' . 'Attempting: ' . $update_query;
$update = pg_query($connect, $update_query);
}else{
$insert_query = "INSERT INTO jellybeans VALUES('$data[0]', $data[1], $data[2])";
echo '<br>' . 'Attempting: ' . $insert_query;
$insert = pg_query($connect, $insert_query);
pg_free_result($insert);
}
pg_free_result($exists);
pg_free_result($update);
From there a simple $row = pg_fetch_row($exists) gives a reliable existence check. In the future, it would probably be best to add an IF FOUND check into the query itself.

Answer 1

One way of knowing is to get the updated rows:
UPDATE ... WHERE condition RETURNING *;
This will return the set of rows updated, just count the number of results.

Answer 2

CREATE OR REPLACE PROCEDURE public."ChangePassword"(
IN id int,
IN pwd text,
OUT affectedrows int)
LANGUAGE 'plpgsql'
AS $BODY$
BEGIN
UPDATE "UserProfile" SET "Password" = pwd WHERE "Id" = id;
GET DIAGNOSTICS affectedrows := ROW_COUNT;
END
$BODY$;
After execution of the stored procedure in below way, it will return the affected row count(s), if any.

Answer 3

Why are you even using pg_* functions? Have you considered using PDO instead? You'd probably have more luck with PDOStatement::rowCount.