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<?php var_dump( (string) true, filter_var(true, FILTER_VALIDATE_INT), (string) false, filter_var(false, FILTER_VALIDATE_INT), (string) 1.1, filter_var(1.1, FILTER_VALIDATE_INT), (string) 0.0, filter_var(0.0, FILTER_VALIDATE_INT), (string) '0.0', filter_var('0.0', FILTER_VALIDATE_INT), (string) '-0.0', filter_var('-0.0', FILTER_VALIDATE_INT) );
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, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
string(1) "1" int(1) string(0) "" bool(false) string(3) "1.1" bool(false) string(1) "0" int(0) string(3) "0.0" bool(false) string(4) "-0.0" bool(false)
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Fatal error: Call to undefined function filter_var() in /in/CZW0W on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: filter_var() in /in/CZW0W on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: filter_var() in /in/CZW0W on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: filter_var() in /in/CZW0W on line 4

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