Add a dynamic key => value options in 3 level array option - php

Question

I have an array as main options in my code.
In case, I want to add dynamic key => values into specific options array key.
This is my main options array:
$configarray1 = array(
"name" => "Addon",
"description" => "module for whmcs",
"version" => "1.1",
"author" => "Me",
"language" => "english",
"fields" => array(
"sender" => array (
"FriendlyName" => "Sender",
"Type" => "dropdown",
"Options" => strtolower($GatewaysIM),
"Description" => $getBalance,
"Default" => $Defaultsender,
),
"validateday" => array (
"FriendlyName" => "Days for Re-validation",
"Type" => "text",
"Size" => "25",
"Description" => "",
"Default" => "90",
),
)
);
I want to add this sender array options in configarray1 fields key:
if($sender == 'sender1'){
$configarray2['fields'] = array(
"username" => array (
"FriendlyName" => "username",
"Type" => "text",
"Size" => "25",
"Description" => "",
"Default" => "",
),
"password" => array (
"FriendlyName" => "password",
"Type" => "password",
"Size" => "25",
"Description" => "",
"Default" => "",
)
);
} elseif($sender == 'sender2'){
$configarray2['fields'] = array(
"line" => array (
"FriendlyName" => "line",
"Type" => "text",
"Size" => "25",
"Description" => "",
"Default" => "",
)
);
}
Output array must be like this below when sender is sender1:
$configarray = array(
"name" => "Addon",
"description" => "module for whmcs",
"version" => "1.1",
"author" => "Me",
"language" => "english",
"fields" => array(
"sender" => array (
"FriendlyName" => "Sender",
"Type" => "dropdown",
"Options" => strtolower($GatewaysIM),
"Description" => $getBalance,
"Default" => $Defaultsender,
),
"username" => array (
"FriendlyName" => "username",
"Type" => "text",
"Size" => "25",
"Description" => "",
"Default" => "",
),
"password" => array (
"FriendlyName" => "password",
"Type" => "password",
"Size" => "25",
"Description" => "",
"Default" => "",
),
"validateday" => array (
"FriendlyName" => "Days for Re-validation",
"Type" => "text",
"Size" => "25",
"Description" => "",
"Default" => "90",
),
)
);
I tested array push but this adds a key in arrays first place and not in 'fields' key, my code was this $configarray = array_push($configarray1,$configarray2); but this not works !
I also tested sum of two arrays ($configarray = $configarray1 + $configarray2) but this is the same as array_push and returns wrong output for me.
How can i resolve this problem ?!

Answer 1

You should just declare it. You don't need a new variable.
Assuming you have the original array named as $configarray1, just:
if($sender == 'sender1'){
$configarray1['fields']['username'] = array(
"FriendlyName" => "username",
"Type" => "text",
"Size" => "25",
"Description" => "",
"Default" => "",
);
$configarray1['fields']['password'] => array(
"FriendlyName" => "password",
"Type" => "password",
"Size" => "25",
"Description" => "",
"Default" => "",
);
} elseif($sender == 'sender2'){
$configarray1['fields']['line'] = array (
"FriendlyName" => "line",
"Type" => "text",
"Size" => "25",
"Description" => "",
"Default" => "",
);
}