Manipulating arrays in php
<p>I have an file uploading site, it has an option of uploading through urls, what i am trying to do is whenever a user uploads through url, i check my database if a file exists that was uploaded through same url it displays the download url directly instead of uploading it again.</p>

<p>The data sent to uploading script is in array form like:</p>

<pre><code>Array ( 
[0] =&gt; http://i41.tinypic.com/3342r93.jpg 
[1] =&gt; http://i41.tinypic.com/28cfub7.jpg 
[2] =&gt; http://i41.tinypic.com/12dsa32.jpg 
)
</code></pre>

<p>and the array used for outputing the results is in form like this:</p>

<pre><code>Array
(
    [0] =&gt; Array
        (
            [id] =&gt; 43
            [name] =&gt; 3342r93.jpg
            [size] =&gt; 362750
            [descr] =&gt; 
            [password] =&gt; 
            [delete_id] =&gt; 75CE
            [upload_id] =&gt; 75F45CAE1
        )

    [1] =&gt; Array
        (
            [id] =&gt; 44
            [name] =&gt; 28cfub7.jpg
            [size] =&gt; 105544
            [descr] =&gt; 
            [password] =&gt; 
            [delete_id] =&gt; D392
            [upload_id] =&gt; 6676FD881
        )

    [2] =&gt; Array
        (
            [id] =&gt; 45
            [name] =&gt; 12dsa32.jpg
            [size] =&gt; 49000
            [descr] =&gt; 
            [password] =&gt; 
            [delete_id] =&gt; 54C9
            [upload_id] =&gt; A58614C01
        )

)
</code></pre>

<p>Now i want is that if the link <a href="http://i41.tinypic.com/28cfub7.jpg" rel="nofollow">http://i41.tinypic.com/28cfub7.jpg</a> is already upload i just add it to output array but maintain it in a order (if the link added was 2nd in array the output result should also show it in 2nd) </p>

<p>So what fuction should be used to remove the matched urls from input array and a fuction to add it output array in the order no.</p>

<p><strong>// edited</strong></p>

<p>Yes unset will do the thing but i want to maintain the order:</p>

<p>For example after unsetting the array looks like this:</p>

<pre><code> Array ( 
    [0] =&gt; http://i41.tinypic.com/3342r93.jpg 
    // [1] was removed
    [2] =&gt; http://i41.tinypic.com/12dsa32.jpg 
    )
</code></pre>

<p>but the output array would be </p>

<pre><code>    Array
    (
        [0] =&gt; Array
            (
                [id] =&gt; 43
                [name] =&gt; 3342r93.jpg
                [size] =&gt; 362750
                [descr] =&gt; 
                [password] =&gt; 
                [delete_id] =&gt; 75CE
                [upload_id] =&gt; 75F45CAE1
            )

// this will become [1], so how can i add another output[1] and shift other 
// items after it to [2], [3] and so on...
        [1] =&gt; Array
            (
                [id] =&gt; 45
                [name] =&gt; 12dsa32.jpg
                [size] =&gt; 49000
                [descr] =&gt; 
                [password] =&gt; 
                [delete_id] =&gt; 54C9
                [upload_id] =&gt; A58614C01
            )

    )
</code></pre>

<p>Thank You.</p>
