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<?php $hashes = array_map(function ($num) { return substr(md5($num), 0, 8); }, range(0, 10000000)); print_r(array_slice($hashes, 0, 10)); if (array_unique($hashes) == $hashes) { echo 'all unique'; } else { echo 'collisions detected'; }
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 268435464 bytes) in /in/uICh0 on line 3
Process exited with code 255.

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