- implode: documentation ( source)
<?php
$values = array(
'one' => array(
'title' => 'Title One',
'uri' => 'http://example.com/one',
),
'two' => array(
'title' => 'Title Two',
'uri' => 'http://example.com/two',
),
);
$final_string = implode(' | ', $values);
echo $final_string;