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run code in 300+ PHP versions simultaneously
<?php $hashn = hash_hmac('sha256', '', '7d87ae991cd4854952ebc9a6bea989ae1ec8974983c22cb9d27ee0e60113b1e1'); $hashn = substr($hashn,0,64); var_dump($hashn);
Output for git.master, git.master_jit, rfc.property-hooks
string(64) "22b53f3d69729bfad96a515595884949fefa744db7c8e1c3ddbca0149b1c1dcd"

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