function adPattern($word, $rec, $list, $index)
{
// create a list of regex matching $word with $rec number of extra character
if ($rec == 0) {
return array($word);
}
$output = array();
for ($i = $index + 1; $i < strlen($word); $i++) {
$mot2 = substr($word, 0, $i) . '.?' . substr($word, $i, strlen($word) - 1);
if ($rec > 1) {
//echo($mot2);
$output[$i] = adPattern($mot2, $rec - 1, $list, $i + 1);
} else {
$list[] = $mot2;
}
}
if ($rec > 1) {
return flat($output);
}
return $list;
}
<?php
function flat(&$ary)
{
// argument must be by reference or array will just be copied
for ($i = 0; $i < count($ary); $i++) {
while (is_array($ary[$i])) {
array_splice($ary, $i, 1, $ary[$i]);
}
}
}
$lst = array(array(1), 2, array(array(3, 4), 5), array(array(array())), array(array(array(6))), 7, 8, array());
flat($lst);
var_dump($lst);
