If you need for any reason to remove an extension from a filename (string) this snippet can help you. An extension in this case is everything after the last period from the whole string.

<?php
/*
Source: Bit Repository (http://www.bitrepository.com/)
*/
function remove_filename_extension($filename)
{
$extension = strrchr($filename, ".");

$filename = substr($filename, 0, -strlen($extension));

return $filename;
}

$filename = 'This-is-a-photo-description.jpeg';

$str = remove_filename_extension($filename);

echo $str;
?>

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