How to Remove Square bracket from JSON, PHP or javascript?
<p><strong>Requirement :</strong>
how can i convert the following json format.</p>

<p><strong>From :</strong></p>

<pre><code>[
{"u0":{"user_id":"124", "name":"Eloise R. Morton"}},
{"u1":{"user_id":"126", "name":"Mary S. Williams"}}
]
</code></pre>

<p><strong>To :</strong></p>

<pre><code> {
 "u0":{"user_id":"124", "name":"Eloise R. Morton"},
 "u1":{"user_id":"126", "name":"Mary S. Williams"}
 }
</code></pre>

<p>I want to delete/remove the first and last square brackets from JSON.</p>

<p><strong>PHP code :</strong></p>

<pre><code>$sql = "SELECT * FROM user_list";
$result = $conn-&gt;query($sql);
$user_count=0;
if ($result-&gt;num_rows &gt; 0) {
    // output data of each row
    while($row = $result-&gt;fetch_assoc()) {
        $user_count_id="u".$user_count;
        $user_count++;
        $user_list[]=   array($user_count_id=&gt;$row);
    }
} else {
    echo "0 results";
}
echo json_encode($user_list);
$conn-&gt;close();
</code></pre>

<p><strong>Javascript code :</strong></p>

<pre><code>function update_user_list(){
    //Fetch data
        $.ajax( "user_list.php" ).done(function(json) {
        user_list       =   json;
        var add_user="";
        for(var obj in user_list){
            add_user +=     '...generate HTML.....';
        }
        $('.user-list-panel .user-table').html(add_user);
        })
    .fail(function() {
        alert( "error" );
    });
</code></pre>