3v4l.org

run code in 300+ PHP versions simultaneously
<?php $options = array(true, 'foo', 100, false); foreach ($options as $optionKey => $optionValue) { if (true === $optionValue) { $options[$optionKey] = "true"; } else if (false === $optionValue) { $options[$optionKey] = "false"; } } var_dump($options);
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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(4) { [0]=> string(4) "true" [1]=> string(3) "foo" [2]=> int(100) [3]=> string(5) "false" }

preferences:
302.77 ms | 405 KiB | 456 Q