too long

Question

I have created an array. Then I have made call to a function. That function adds another array inside this array. But it is returning an empty array when I print_r the main array. Please note that the reason to use function is that I intend to call it multiple times.

PHP:

$myarray = array();
myfunc();
function myfunc() {
    $a = 1;
    $b = "my name";
    $myarray[] = array(
        'a'=>$a,
        'b'=>$b
    );
}
print_r($myarray);

Answer 1

Actually you have to return array from function, capture it to a variable and print that variable.

<?php
function myfunc() {
    $myarray[] = array(
        'a'=>1,
        'b'=>"my name"
    );

    return $myarray;
}
$myarray = myfunc();
print_r($myarray);

Output:- https://3v4l.org/7vCmC

Or you can use Passing by Reference

<?php
$myarray = array();
function myfunc(&$myarray) {
    $myarray[] = array(
        'a'=>1,
        'b'=>"my name"
    );
}
myfunc($myarray);
print_r($myarray);

Output:-https://3v4l.org/R9JYL

Note:- variable inside a function has no relation with the same variable outside of it,until it's passed as a reference [2nd answer]. This comes under function scope