Codeup-Exercises/list_with_commas.php at master · annajmorton/Codeup-Exercises · GitHub

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<?php

$physicistsString = 'Gordon Freeman, Samantha Carter, Sheldon Cooper, Quinn Mallory, Bruce Banner, Tony Stark';
$physicistsArray = explode(', ', $physicistsString);


function humanizedList(array $ArrayIN, $isAsort = false) {

	if ($isAsort) {


		// resort by last name first

		// foreach ($ArrayIN as $key => &$value) {

		// 	$tempArr  = explode(' ', $value);
		// 	array_unshift($tempArr, array_pop($tempArr));
		// 	$value = implode(" ", $tempArr);

		// }

		// sort($ArrayIN);


		// foreach ($ArrayIN as $key => &$value) {

		// 	$tempArr  = explode(' ', $value);
		// 	array_push($tempArr, array_shift($tempArr));
		// 	$value = implode(" ", $tempArr);

		// }

		usort($ArrayIN, function($a, $b) {
		    $a = substr(strrchr($a, ' '), 1);
		    $b = substr(strrchr($b, ' '), 1);
		    return strcmp($a, $b);
		});


	}

	array_push($ArrayIN, ("and " . array_pop($ArrayIN) . PHP_EOL));

	$famousFakePhysicists = implode(", ", $ArrayIN);

	return $famousFakePhysicists;

}


// Humanize that list
 $famousFakePhysicists = humanizedList($physicistsArray, true);

echo "Some of the most famous fictional theoretical physicists are {$famousFakePhysicists}.";