Online PHP editor | output for C4FFL

@ 2017-07-13T15:44:19Z

<?php

var_dump( filter_var(1, FILTER_VALIDATE_BOOLEAN) );
var_dump( !(!1) );

echo str_repeat('-', 30) . PHP_EOL;

var_dump( filter_var('1', FILTER_VALIDATE_BOOLEAN) );
var_dump( !(!'1') );

echo str_repeat('-', 30) . PHP_EOL;

var_dump( filter_var('y', FILTER_VALIDATE_BOOLEAN) );
var_dump( !(!'y') );

echo str_repeat('-', 30) . PHP_EOL;

var_dump( filter_var(0, FILTER_VALIDATE_BOOLEAN) );
var_dump( !(!0) );

echo str_repeat('-', 30) . PHP_EOL;

var_dump( filter_var('0', FILTER_VALIDATE_BOOLEAN) );
var_dump( !(!'0') );

echo str_repeat('-', 30) . PHP_EOL;

var_dump( filter_var('n', FILTER_VALIDATE_BOOLEAN) );
var_dump( !(!'n') );

echo str_repeat('-', 30) . PHP_EOL;

var_dump( filter_var(true, FILTER_VALIDATE_BOOLEAN) );
var_dump( !(!true) );

echo str_repeat('-', 30) . PHP_EOL;

var_dump( filter_var(false, FILTER_VALIDATE_BOOLEAN) );
var_dump( !(!false) );

Output for 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 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: bool(true) bool(true) ------------------------------ bool(true) bool(true) ------------------------------ bool(false) bool(true) ------------------------------ bool(false) bool(false) ------------------------------ bool(false) bool(false) ------------------------------ bool(false) bool(true) ------------------------------ bool(true) bool(true) ------------------------------ bool(false) bool(false)
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 bool(true) bool(true) ------------------------------ bool(true) bool(true) ------------------------------ bool(false) bool(true) ------------------------------ bool(false) bool(false) ------------------------------ bool(false) bool(false) ------------------------------ bool(false) bool(true) ------------------------------ bool(true) bool(true) ------------------------------ bool(false) bool(false)

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