Get Timestamp of svn commit for a file

gistfile1.php

<?php

function getSVNCommitTimestamp($file)
{
    exec("svn info --xml ${file} 2>/dev/null", $output, $return_code);

    if ($return_code) {
        return false;
    }

    $file = new SimpleXMLElement(implode('', $output));
    $date = new DateTime($file->entry->commit->date);

    return $date->getTimestamp();
}

var_dump(getSVNCommitTimestamp('activism.txt'));