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From: "J.O. Aho" <user@example.net>
Newsgroups: comp.lang.php
Subject: Re: Help With Warning Message
Date: Mon, 23 Aug 2021 09:13:04 +0200
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On 23/08/2021 07.03, Call Me Tom wrote:
> 
>    $da_name = $da['airport_name']; is line 104.  When I Access $da_name
> in my table, it prints the airport name.  Can you tell what it thinks
> is a boolean?

The $da is boolean for the row  before failed:

$da = $result4->FETCH(PDO::FETCH_ASSOC);

So you should check the $da value before using it

if($da) {
	$da = $result4->FETCH(PDO::FETCH_ASSOC);
	$da_name = $da['airport_name'];
} else {
	// do what you need to tell it didn't find any thing
}

also worth mentioning, the variable $origin needs to be sanitized, as 
it's a prone for SQL-injection. I do suggest you use withe list method, 
where you check that the string has only allowed characters.


-- 

  //Aho