complicate array push to the first index - php

Question

I have multidimensional array which is create like
$column = array(
"person#1"=> array ("name"=>"Leon" , "Age"=>"19" ),
"person#2"=> array ("name"=>"Gary" , "Age"=>"31" ),
"person#3"=> array ("name"=>"May" , "Age"=>"25" )
)
Now, what I want is to push something like
"person#4"=> array ("name"=>"Tony" , "Age"=>"28" )
to the first place of array column.
I had look into
array_unshift($column, array("person#1"=> array ("name"=>"Tony" , "Age"=>"28" ));
it did replace the array and variable with my array, but always indexed with '0' and not person#4 as expect

Answer 1

Why not do a simple $new_person + $column ?

Answer 2

Use array_merge():
<?php
header('Content-Type: text/plain');
$column = array(
"person#1"=> array ("name"=>"Leon" , "Age"=>"19" ),
"person#2"=> array ("name"=>"Gary" , "Age"=>"31" ),
"person#3"=> array ("name"=>"May" , "Age"=>"25" )
);
$column = array_merge(array( "person#4" => array ("name" => "Tony" , "Age" => "28" )), $column);
var_dump($column);
?>
Shows:
array(4) {
["person#4"]=>
array(2) {
["name"]=>
string(4) "Tony"
["Age"]=>
string(2) "28"
}
["person#1"]=>
array(2) {
["name"]=>
string(4) "Leon"
["Age"]=>
string(2) "19"
}
["person#2"]=>
array(2) {
["name"]=>
string(4) "Gary"
["Age"]=>
string(2) "31"
}
["person#3"]=>
array(2) {
["name"]=>
string(3) "May"
["Age"]=>
string(2) "25"
}
}