Online PHP editor | rfc for R654I

@ 2014-05-15T10:54:50Z

<?php

$hotels = [
	['Cala', 3, 8.7, 6000],
	['Ocean', 3, 8.2, 6150],
	['Orchid', 3, 8.0, 7200],
	['Ya', 4, 8.3, 6950],
	['Chaba', 3, 8.2, 7120],
];

$top = [
	'Cala',
	'Ocean',
	'Ya',
];

for ( $i=0; $i<count($hotels); $i++ ) {
	$hotels[$i][4] = 0;
}

$starCoefOptions = range(0.1, 5, 0.1);
$ratingCoefOptions = range(20, 10000, 20);

$results = [];

foreach ( $starCoefOptions as $starCoef ) {
	foreach ( $ratingCoefOptions as $ratingCoef ) {
		$topGenerated = buildTop($hotels, $starCoef, $ratingCoef);
		$topGenerated = array_slice($topGenerated, 0, count($top));
		if ( $topGenerated === $top ) {
			$results[strval($starCoef)][] = $ratingCoef;
		}
	}
}

foreach ( $results as $starCoef=>$ratingCoefs ) {
	echo $starCoef.': '.min($ratingCoefs).' - '.max($ratingCoefs)."\r\n";
}

function buildTop($hotels, $starCoef, $ratingCoef)
{
	for ( $i=0; $i<count($hotels); $i++ ) {
		for ( $j=$i+1; $j<count($hotels); $j++ ) {
			$starDifference = $hotels[$i][1]-$hotels[$j][1];
			$ratingToCompensate = $starDifference*$starCoef;
			$rating = $hotels[$i][2]+$ratingToCompensate;

			$ratingDifference = ($rating-$hotels[$j][2])*10;
			$priceToCompensate = $ratingDifference*$ratingCoef;
			$price = round($hotels[$i][3]-$priceToCompensate);
			
			if ( $price < $hotels[$j][3] ) {
				$hotels[$i][4]++;
			} else {
				$hotels[$j][4]++;
			}
		}
	}

	usort($hotels, function($hotelA, $hotelB){
		return $hotelB[4]-$hotelA[4];
	});

	return array_map(function($hotel){
		return $hotel[0];
	}, $hotels);
}

Output for git.master, git.master_jit, rfc.property-hooks: 0.1: 20 - 380 0.2: 20 - 260 0.3: 20 - 180 0.4: 20 - 140 0.5: 20 - 120 0.6: 20 - 100 0.7: 20 - 80 0.8: 20 - 80 0.9: 20 - 60 1: 20 - 60 1.1: 20 - 60 1.2: 20 - 60 1.3: 20 - 40 1.4: 20 - 40 1.5: 20 - 40 1.6: 20 - 40 1.7: 20 - 40 1.8: 20 - 40 1.9: 20 - 20 2: 20 - 20 2.1: 20 - 20 2.2: 20 - 20 2.3: 20 - 20 2.4: 20 - 20 2.5: 20 - 20 2.6: 20 - 20 2.7: 20 - 20 2.8: 20 - 20 2.9: 20 - 20 3: 20 - 20 3.1: 20 - 20 3.2: 20 - 20 3.3: 20 - 20 3.4: 20 - 20 3.5: 20 - 20 3.6: 20 - 20 3.7: 20 - 20 3.8: 20 - 20

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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