Sort array based only on trailing numbers in strings

Question

I have an array that looks like this:

Array
(
    [0] => ripe@hobby.nl 20140827
    [1] => bas@hobby.nl 20130827
    [2] => bas@dikkenberg.net 20140825
    [3] => bas@hobby.nl 20120825
    [4] => ripe@hobby.nl 20140826
)

Now I want to sort this array in php based on the numbers only so ignoring the e-mail address in the sort process.

Answer 1

<?php
$data = Array(0 => 'ripe@hobby.nl 20140827',
    1 => 'bas@hobby.nl 20130827',
    2 => 'bas@dikkenberg.net 20140825',
    3 => 'bas@hobby.nl 20120825',
    4 => 'ripe@hobby.nl 20140826'
);

$count_data = count($data);

for($i=0;$i<$count_data;$i++)
{
    $new_data[trim(strstr($data[$i], ' '))]=$data[$i];
}
echo "<pre>"; print_r($new_data);
?>

this will return you

Array
(
    [20140827] => ripe@hobby.nl 20140827
    [20130827] => bas@hobby.nl 20130827
    [20140825] => bas@dikkenberg.net 20140825
    [20120825] => bas@hobby.nl 20120825
    [20140826] => ripe@hobby.nl 20140826
)

Now you can sort according to need by Key