php create arrays dynamically and merge - php

Question

I'm trying to create an unknown number of arrays dynamically inside a foreach loop, merge them all at the end into one array, and use this in a JSON format for Google Analytics.
So far I have the following code which is throwing an error at the merge part:
$p=1;
foreach(...){
...
$arr = 'arr'.$p;
$name = $order->ProductGroupName;
$name = str_replace("'", "", $name);
$arr = array(
"name"=>$name,
"id"=>$order->ProductCode,
"price"=>$order->RRP,
"quantity"=>$order->Quantity
);
$p++;
}
for ($q = 1; $q<$p; $q++){
$arry = 'arr'.$q;
$merge = array_merge($arry, $merge);
};
How do I create the arrays dynamically and merge them at the end, please?
I'm relatively new to PHP and have tried my best to get this to work.

Answer 1

I think I understand what you're trying to do. Just dynamically append [] to the array and you don't need to merge:
foreach($something as $order) {
$arr[] = array (
"name"=>str_replace("'", "", $order->ProductGroupName),
"id"=>$order->ProductCode,
"price"=>$order->RRP,
"quantity"=>$order->Quantity
);
}
If you want to have string keys for whatever reason, then:
$p = 1;
foreach($something as $order) {
$arr["SomeText$p"] = array (
"name"=>str_replace("'", "", $order->ProductGroupName),
"id"=>$order->ProductCode,
"price"=>$order->RRP,
"quantity"=>$order->Quantity
);
$p++;
}
And that's it. Check with:
print_r($arr);
Things like $arry = 'arr'.$q; stink of variable variables (though not done correctly) and shouldn't be used.