Most hash tables have a semi-random order dictated by the hash algorithm in combination with the bucket count. PHP Arrays are ordered by insertion order (each s

Most hash tables have a semi-random order dictated by the hash algorithm in combination with the bucket count. PHP Arrays are ordered by insertion order (each slot in the hash table has a next pointer, the last of which is appended to on insertion). The order may be unusual or even non-obvious, but it is predictable.