Олег Тереза

<?php

function isTurnsStr($firstStr, $secondStr)
{
for($i = 0; $i < strlen($firstStr); $i++) {
$ch = substr($firstStr, $i, 1);
if(strpos($secondStr, $ch) === false ) {
return false;
}
}
return true;
}

// TESTS
$tests = [
["clockwise", "owe clicks"],
["clockwise", "clockwork"]
];

foreach ($tests as $test) {
echo '* "' . $test[0] . '", "' . $test[1] . '" = ' . (isTurnsStr($test[0], $test[1]) ? 'true' : 'false') . PHP_EOL;
}