- var_dump: documentation ( source)
- sscanf: documentation ( source)
<?php
$strings = [
"In My Cart : 11 items",
"12 Monkeys",
"11 won 1 too",
"At the end 7",
];
foreach ($strings as $string) {
var_dump(sscanf(' ' . $string, '%*[^0-9]%d')[0]);
}