PHP Junior Test: isContained

isContained.php

<?php
/**
 * Make the function pass all the tests!
 *
 * Your function should return true if and only if all tokens
 *  can be found in the long string given.
 *
 * Run this file on the command line using:
 *  $ php isContained.php
 *
 *  Or use a repl like https://repl.it/languages/php
 */

/**
 * description ?
 *
 * @param ?
 * @param ?
 *
 * @return ?
 */
function isContained(string $long_string, array $tokens)
{
   // determine whether EVERY token can be found within $long_string
   return -1;
}



// In these cases, the tokens are found
echo ((true === isContained("abcdefghijklm", [])) ? "Passes" : "Fails")."\n\n";
echo ((true === isContained("abcdefghijklm", ['a'])) ? "Passes" : "Fails")."\n\n";
echo ((true === isContained("abcdefghijklm", ['abc', 'def'])) ? "Passes" : "Fails")."\n\n";
echo ((true === isContained("abcdefghijklm", ['a', 'f'])) ? "Passes" : "Fails")."\n\n";
echo ((true === isContained("abcdefghijklm", ['abcdefghijklm'])) ? "Passes" : "Fails")."\n\n";

// tokens are NOT found
echo ((false === isContained("abcdefghijklm", ['A'])) ? "Passes" : "Fails")."\n\n";
echo ((false === isContained("abcdefghijklm", ['ba'])) ? "Passes" : "Fails")."\n\n";
echo ((false === isContained("abcdefghijklm", ['a', 'b', 'c', 'x'])) ? "Passes" : "Fails")."\n\n";
echo ((false === isContained("abcdefghijklm", ['abcdefghijklmx'])) ? "Passes" : "Fails")."\n\n";