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<?php class Calculator { /** * Calculate the discount percentage */ function getDiscount($price=0, $sale=0) { $difference = $price-$sale; $discount = ($difference/$price) * 100; if($discount>0) { return $discount; } } } $calculator = new Calculator(); echo $calculator->getDiscount(23,24); if($calculator->getDiscount(23,24)==null){ echo 'No discount'; }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
No discount
preferences:
340.35 ms | 406 KiB | 456 Q