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<?php function bit2chr_mask(string $flags, int $bitmask): string { $chrmask = ''; for($bit = 1, $i = 0; $bit <= $bitmask; $bit <<= 1, $i++) { if($bitmask & $bit){ $chrmask .= $flags[$i]; } } return $chrmask; } var_dump(bit2chr_mask('abcdefghijklmnopqrstuvwxyz1234567890', 2147483648));
Output for git.master, git.master_jit, rfc.property-hooks
string(1) "6"

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