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<?php mb_substitute_character("long"); var_dump( $conv = mb_convert_encoding( $bin = hex2bin("70000000"), "UTF-8", "UCS-4BE" ), mb_check_encoding($bin, "UCS-4BE"), bin2hex(mb_convert_encoding($conv, "UCS-4BE", "UTF-8")) );
Output for git.master, git.master_jit, rfc.property-hooks
string(10) "U+70000000" bool(true) string(80) "000000550000002b0000003700000030000000300000003000000030000000300000003000000030"

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