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Re: Help With Warning Message

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On Sun, 22 Aug 2021 20:00:04 -0400, Call Me Tom wrote:

> here's the code 
> $query4 = "SELECT airport_name
>           FROM airports
> 	        WHERE airport_code = '$origin'";
>           $result4 = $dbh->query($query4);
>           $da = $result4->FETCH(PDO::FETCH_ASSOC);
>           $da_name = $da['airport_name'];
> 
> The above produces this warning message
> 
> Warning: Trying to access array offset on value of type bool in
> C:\xampp\htdocs\CAA_Tom\logbook.php on line 104
> 
> I don't even know where to begin.

Start with looking at line 104 of the PHP code in file
C:\xampp\htdocs\CAA_Tom\logbook.php

> What is the warning trying to tell me?

On line 104, you tried to access a variable as an array.
However, that variable /is not/ an array; it is a boolean
value. Thus, the array access failed.

From your code snippet above, I suspect that line 104 looks like
  $a = $b['something'];
The error message is trying to tell you that 
  $b
is not an array (and helpfully tells you that it /is/ a boolean),
so it cannot resolve the array access
  $b['something']

As to /why/ the variable is /not/ an array, you will have to determine
that for yourself.

With regards to the code snippet you attached here, I CAN tell you
that the PDO fetch() method returns an array on success, OR the
boolean value FALSE on failure. Perhaps you need take a look at
the code that initializes the suspect array named in line 104,
to see if the initializer does something similar.

HTH
-- 
Lew Pitcher
"In Skills, We Trust"

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Thread

Help With Warning Message Call Me Tom <noemail@noemail.com> - 2021-08-22 20:00 -0400
  Re: Help With Warning Message Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2021-08-23 01:50 +0000
    Re: Help With Warning Message Call Me Tom <noemail@noemail.com> - 2021-08-23 01:03 -0400
      Re: Help With Warning Message "J.O. Aho" <user@example.net> - 2021-08-23 09:13 +0200
        Re: Help With Warning Message Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2021-08-23 18:19 +0000
          Re: Help With Warning Message Call Me Tom <noemail@noemail.com> - 2021-08-23 15:26 -0400
          Re: Help With Warning Message "J.O. Aho" <user@example.net> - 2021-08-24 00:33 +0200
      Re: Help With Warning Message Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2021-08-23 11:47 +0000
  Re: Help With Warning Message Arno Welzel <usenet@arnowelzel.de> - 2021-08-30 10:21 +0200

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