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run code in 300+ PHP versions simultaneously
<?php $result = hash('sha256', 'hello'); $mutated = mutate($result); $unmutated = unmutate($mutated); echo "hello in sha256 is $result. Mutated it becomes $mutated, and when unmutated it is returned to $unmutated"; function mutate($hash) { return str_replace(['a', 'b', 'c', 'd', 'e', 'f'], ['f', 'e', 'd', 'c', 'b', 'a'], $hash); } function unmutate($hash) { return str_replace(['f', 'e', 'd', 'c', 'b', 'a'], ['a', 'b', 'c', 'd', 'e', 'f'], $hash); }
Output for git.master, git.master_jit, rfc.property-hooks
hello in sha256 is 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824. Mutated it becomes 2ca24cba5ab0a30b26b83b2ac5b9b29b1b161b5c1aa7425b73043362938b9824, and when unmutated it is returned to 2df24def5fe0f30e26e83e2fd5e9e29e1e161e5d1ff7425e73043362938e9824

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