PHP display order for iterating through multiple arrays

Question

In essence, I have 3 arrays. These are serialised, stored to the DB, un-serialised and then outputted to a page. myFirstArray, mySecondArray, & myThirdArray.

From what I gather - I need to be using a foreach loop, or a for loop with a counter, as the 3 arrays are all of (the same) unknown length. By that I mean one user may have stored 4 items into each of the 3 arrays, but another user might have stored 8 items into each of the 3 arrays.

I'm trying to get the output to look something like this:

myFirstArray[0], mySecondArray[0], myThirdArray[0]
myFirstArray[1], mySecondArray[1], myThirdArray[1]
myFirstArray[2], mySecondArray[2], myThirdArray[2]

The current code I have is as follows:

foreach ($myFirstArray as $value1){
    echo $value1 . " ";
}
foreach ($mySecondArray as $value2){
    echo $value2 . " ";
}
foreach ($myThirdArray as $value3){
    echo $value3 . "<br>";
}

I am aware that this code is never going to output my arrays as I would like, but I'm having some difficulty with working out the logic behind what I need. I haven't rushed straight to StackOverflow to ask, but nothing else I've seen has been very helpful!

See: http://stackoverflow.com/q/32061254/3933332 – Rizier123 Apr 16 '16 at 15:39 — Rizier123, Apr 16 '16 at 15:39

score 1 · Accepted Answer · 2016-04-16T15:55:06.073

1

Since both arrays have the same length, I propose

$length = count($myFirstArray);
for($i = 0; $i <$length ; $i++) {
    echo $myFirstArray[$i].','.$mySecondArray[$i].','.$myThirdArray[$i].'<br/>';
}

This will loop through all of your arrays at the same time :) .

edited Apr 16 '16 at 15:55

answered Apr 16 '16 at 15:45

I've tried this code, but it doesn't appear to output anything. – Mcar49 Apr 16 '16 at 15:54
@SixTailedFox, sorry I missed the count function, just edited it. I'm too used to OO programming :) – Apr 16 '16 at 15:57

PHP display order for iterating through multiple arrays

1 Answers1