If Statement with Foreach not iterating through foreach - php

Question

I am having an issue with my code - fairly new to PHP so any pointers would be appreciated.
I have the following code
foreach(findCustomAlerts($customerid) as $key=>$value){
echo "ID : ".$rifdid = $value['Catid']."<br>";
echo "Visits required per day : ".$visitsneeded= $value['Visits required']."<br>";
}
foreach(getTodaysVisits($device_id) as $rfid){
foreach($rfid as $key=> $read){
if($key ==$rifdid && $read < $visitsneeded) {
echo"<br>". $key." has not visited enough";
}
}
}
But it is not iterating through the foreach - it is only picking up the first values and then stopping :
ID: 1005
Visits required per day : 3
ID : 2089
Visits required per day : 5
2089 has not visited enough
This is the array that the foreach should be iterating through:
Array
(
[rfid_id] => Array
(
[2089] => 1
[1005] => 3
)
)
I have tried putting a variable in to count the iterations like so :
$i = 0;
foreach(getTodaysVisits($device_id) as $rfid){
foreach($rfid as $key[$i]=> $read){
if($key[$i] ==$rifdid && $read < $visitsneeded) {
echo"<br>". $key[$i]." has not visited enough";
$i++;
}
}
}
But it gives me the following errors :
Warning: Cannot use a scalar value as an array
Notice: Trying to access array offset on value of type int in
So not sure what the best course of action is, any advice greatly appreciated.

Answer 1

This looks like the structure that you are receiving from findCustomAlerts($customerid) in the first for-each loop is not what you are expecting, however the warnings don't give line numbers so I could be wrong.
In your code you have a $key that goes unused, then a $value that you treat as an array.
The warning message you get tells us that you can't use a scalar (or singular) value type as an array. We then get a notice telling us that when we try to use it as an array, either the offset 'Catid' or 'Visits required' is unavailable, likely due to the same reason. I suspect $value is more likely of type integer based on the array example you've shown (1,3).
Run a var_dump() on the output of the findCustomAlerts function and I think you'll understand the issue better.