- implode: documentation ( source)
- explode: documentation ( source)
<?php
$field_from_table = 'el1;el2;el3';
$field_from_table = explode(';', $field_from_table);
$field_from_table = '<li>' . implode("</li>\r\n<li>", $field_from_table) . '</li>';
echo $field_from_table;