Point out the syntax error?

Question

PHP

In Navicat the function is handled correctly (screenshot-1).

In PHP, this is the same function (screenshot-2).

Gives an incomprehensible result (screen-3).

When replacing SELECT with CALL (screen-4).

Gives such an error (screenshot-5).

With any other manipulations, for example, attempts to play around with quotes, or apostrophes, replacing with
adjacent operators, it also swears at the syntax or even a white screen (does not display a single character).
Where did I screw up
?

Answer 1

Where did I screw up?

Where they decided to replace the reading of the documentation with fantasizing. Return SELECT back, and "incomprehensible result" is a query result resource, you need to get what you need from it, there are all sorts of different methods for this - pg_fetch_result , pg_fetch_row , pg_fetch_all , ... - choose the appropriate one.