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<?php function isMultipleOf(float $number, float $divisor) { $modulus = ($number - round($number / $divisor) * $divisor); $precision = 0.0000000001; if (-$precision < $modulus && $modulus < $precision) { return 0.0; } return $modulus; } function test(float $value, float $multiple, $expected) { if ((isMultipleOf($value, $multiple) == 0.0) !== $expected) { var_dump($value, $multiple, $expected); } } test(400.01, 0.01, true); test(400.01, 3, false); test(9007199254740991.00000000000000, 1, true); test(900719925474099166666.00000000000000, 1, true); test(2.00000000000000, 1, true); test(2, 1, true);
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.26, 8.3.0 - 8.3.14, 8.4.1
Output for 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
Catchable fatal error: Argument 1 passed to test() must be an instance of float, double given, called in /in/K5D3k on line 20 and defined in /in/K5D3k on line 14
Process exited with code 255.
Output for 5.1.0 - 5.1.6
Fatal error: Argument 1 passed to test() must be an object of class float, called in /in/K5D3k on line 20 and defined in /in/K5D3k on line 14
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Argument 1 must be an object of class float in /in/K5D3k on line 14
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/K5D3k on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting ')' in /in/K5D3k on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/K5D3k on line 3
Process exited with code 255.
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