1行数组到字符串php

I have the following array under $hashes:

Array
    (
        [0] => Array
            (
                [0] => "8b4bc4be1c7b2e5175b645ec6280" target="btcad"
                [1] => "4667fb10d39cc20e33fc8f60c4f4" target="btcad"
                [2] => "a98b3a8f093d0160614d28f541fb" target="btcad"
                [3] => "3c6f41fe78b58d94669d4f52e9be" target="btcad"
                [4] => "896c86451ceb88ea26291d2b6f4b" target="btcad"
                [5] => "e64a32b1e9e6978d2da38052832e" target="btcad"
                [6] => "74fe5907ab42a2610e3a6f42104e" target="btcad"
            )

    )

Now I also have a other variable named $selected which is a number, lets say $selected = 2 then I want to export the 3th line / [2] from the array to $selectedhash. In this case $selectedhash would be a98b3a8f093d0160614d28f541fb.

What is the quickest and safest way to do this way to do this in php?

You should look up tutorials on basic php, just access your array with a normal index.

$selectedhash = $yourArray[0][ $selected ];

This also removes target="btcad"

$selectedhash = explode('" ', $myArray[0][$selected]);
$selectedhash = str_replace('"', '', $selectedhash[0]);