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run code in 150+ php & hhvm versions
Bugs & Features
<?php $number = 3.0000000000001; $precision = 13; $epsilon = pow(0.1, $precision); $rounded = round($number, $precision); $roundedResult = $number; // echo "Test 1: ".$rounded.PHP_EOL; // echo "Test 2: ".abs($number - $rounded).PHP_EOL; if (abs($number - $rounded) < $epsilon) { $roundedResult = intval($number); } $intedResult = $number; if ((int) $number == $number){ $intedResult = (int) $number; } // echo "Delta is : ".$delta.PHP_EOL; echo "Source number: ".$number.PHP_EOL; echo "Rounded result: ".$roundedResult.PHP_EOL; echo "Inted result: ".$intedResult.PHP_EOL;
Output for 4.3.10 - 4.4.9, 5.0.2 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Source number: 3.0000000000001 Rounded result: 3 Inted result: 3.0000000000001
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/BbBeQ on line 32 Source number: 3.0000000000001PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/BbBeQ on line 33 Rounded result: 3PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/BbBeQ on line 34 Inted result: 3.0000000000001PHP_EOL