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From: Derek Turner <frderek@suremail.je>
Newsgroups: comp.lang.php
Subject: Looking for NULL in arrays
Date: 25 Oct 2015 16:05:19 GMT
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The problem is not that I don't know how to iterate through an array - 
the problem is that there are so many ways and I can't see the wood for 
the trees -which is the easiest method?

I have a simple array called $weeks. At the moment it contains either 
three string values or 5 could easily make it a consistent five if 
necessary.

$weeks[1] always contains a string. [2], [3] etc. either contain a string 
or NULL from mysql query.

I want to iterate through in key order until either [5] or a NULL value 
is found. What would do that, please? Is there a simple way without 
having to use an 'if' or similar test? I'm thinking something similar to

while ($row = $result->fetch_asoc());

that will detect a NULL value and stop. IYSWIM.