Polyfill for is_iterable() function added in PHP 7.1.
is_countable
Polyfill for is_countable() function added in PHP 7.3.
hash_equals
Timing attack safe string comparison
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Polyfill for is_iterable() function added in PHP 7.1.
Polyfill for is_countable() function added in PHP 7.3.
Timing attack safe string comparison