- 01
- 02
- 03
- 04
- 05
- 06
- 07
- 08
- 09
- 10
- 11
<?php
function word_filter($str) {
$filtered = '';
for ($i = 0; $i <= strlen($str) - 1; $i++) {
$char = substr($str, $i, 1);
if (ctype_alpha($char)) {
$filtered .= $char;
}
}
return $filtered;
}