How to define the sequence of array elements?
<p>I have got the following array.</p>

<pre><code>Array
        (
            [1] =&gt; a
            [2] =&gt; b
            [3] =&gt; c
            [4] =&gt; d
            [5] =&gt; e
            [6] =&gt; f
            [7] =&gt; g
            [8] =&gt; h
            [9] =&gt; i
            [11] =&gt; j
            [13] =&gt; k
            [14] =&gt; l
            [15] =&gt; m
            [16] =&gt; n
            [17] =&gt; o
            [18] =&gt; p
            [19] =&gt; q
            [20] =&gt; r
            [21] =&gt; s
            [22] =&gt; t
            [23] =&gt; u
            [24] =&gt; v
            [25] =&gt; w
        )
</code></pre>

<p>as you can see number 10 and 12 don't exist. 
Is there a function, so that my array has a range from 1 to 23? So that it would look like this?</p>

<pre><code>Array
        (
            [1] =&gt; a
            [2] =&gt; b
            [3] =&gt; c
            [4] =&gt; d
            [5] =&gt; e
            [6] =&gt; f
            [7] =&gt; g
            [8] =&gt; h
            [9] =&gt; i
            [10] =&gt; j
            [11] =&gt; k
            [12] =&gt; l
            [13] =&gt; m
            [14] =&gt; n
            [15] =&gt; o
            [16] =&gt; p
            [17] =&gt; q
            [18] =&gt; r
            [19] =&gt; s
            [20] =&gt; t
            [21] =&gt; u
            [22] =&gt; v
            [23] =&gt; w
        )
</code></pre>

<p>I hope you understand my problem. Thanks for any help.</p>
