- file_get_contents: documentation ( source)
- var_dump: documentation ( source)
- array_values: documentation ( source)
- array_filter: documentation ( source)
- file: documentation ( source)
- file_put_contents: documentation ( source)
<?php
$s_con = array_values(array_filter(file('count.txt'),
create_function('$a', 'return rtrim($a) != "~";')));
$index = file_get_contents('count_index.txt');
file_put_contents('count_index.txt', ($index + 1) % count($s_con)); // PHP5
echo $s_con[$index];
var_dump(($index + 1) % count($s_con));