how to insert a variable value into an array key?

Question

I have this piece of code:

<?php
require_once ('mercadopago.php');

$monto = $_POST['amount'];

$mp = new MP('XXXX', 'XXXXXXXXXXX');

$preference_data = array(
    "items" => array(
       array(
           "title" => "item",
           "quantity" => 1,
           "currency_id" => "usd",
           "unit_price" => HERE
       )
    )
);

$preference = $mp->create_preference ($preference_data);

?>

and I need to make the variable $monto that i define from a post send before to give its value to "Unit_price" where it says "HERE". I tried just writting $monto, but it didnt work.

there is some how i can do this? thanks u and sorry for my english. its not pretty good.

"unit_price" => $monto Why you asking again the same question? — Rakesh Sharma
– Rakesh Sharma, Commented Jun 11, 2014 at 7:15

Sudhir Bastakoti · Accepted Answer · 2014-06-11 07:14:59Z

2

you can just use the variable, like:

//check if your POST data is not empty and assign some default value in case its empty
$monto = (!empty($_POST['amount'])) ? $_POST['amount'] : 0; //0 is default value
$preference_data = array(
    "items" => array(
       array(
           "title" => "item",
           "quantity" => 1,
           "currency_id" => "usd",
           "unit_price" => $monto
       )
    )
);

answered Jun 11, 2014 at 7:14

Sudhir Bastakoti

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2 Comments

Oswaldo C. Over a year ago

the post data is not empty, and writte just $monto it doesnt work. maybe its because im using smarty templates?

Sudhir Bastakoti Over a year ago

@user3128221 what do you see when you var_dump($preference_data); ..? and pls clarify your question, as you dont seem to mention anything regarding smarty in your question...!

Maher Abuthraa · Accepted Answer · 2016-10-20 21:36:04Z

0

<?php
$preference_data = array(
    "items" => array(
        array(
            "title" => "RosquinhaPvP - NickDoPlayer - VIP",
            "quantity" => 1,
            "currency_id" => "BRL",
            "unit_price" => doubleval($monto)
        )
    )
);

edited Oct 20, 2016 at 21:36

Maher Abuthraa

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answered Oct 20, 2016 at 20:56

Fernando Zorek

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