How to assign array value for next index of a same array

Question

I'm working on config file which contain huge array, instead of assigning same value again and can I reuse which is already assigned to other index(or key) in the time of creating array? and here is my code

<?php

return [

   //array
   //array
   //array

   'ar' => [
       'mainDirectory' => 'http://example.com/main/',

       'subDirectory'  =>  'http://example.com/main/sub/',

       // instead of using above can't I reuse which is already exist something like below
       // 'subDirectory'  =>  [ar.mainDirectory].'sub/'
    ]

   //array
   //array
   //array
];
?>

I know we can access array & its index's after it is created and just for curiosity is there any way we can access it in the time of creating array itself?

Thank you

Check this question: stackoverflow.com/questions/10358261/php-self-referencing-array — rocknrollcanneverdie
– rocknrollcanneverdie, Commented Jan 17, 2017 at 10:51

Basile Jauffret · Accepted Answer · 2017-01-17 17:01:46Z

1

YES, you can do that here is the code

<?php
    return [
        'ar' => [
            'mainDirectory' => $ref = 'http://example.com/main/',
            'subDirectory'  => $ref.'sub/',
        ]
    ];
?>

and worked example is below

<?php

function arrayRef(){
    return [
        'ar' => [
           'mainDirectory' => $ref = 'http://example.com/main/',
           'subDirectory'  =>  $ref.'sub/',
        ]
    ];
}

print_r(arrayRef());

?>

and output

Array
(
    [ar] => Array
        (
            [mainDirectory] => http://example.com/main/
            [subDirectory] => http://example.com/main/sub/
        )

)

answered Jan 17, 2017 at 17:01

Basile Jauffret

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Comments

Nikunj Chotaliya · Accepted Answer · 2017-01-17 10:50:45Z

0

I don't think we can do like that. If you need to access some common values then why not tried with constant and then used that in all required places in your array.

answered Jan 17, 2017 at 10:50

Nikunj Chotaliya

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