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<?php $raw = "\xc3\x28"; ini_set('mbstring.substitute_character', "none"); $fixed = mb_convert_encoding($raw, 'UTF-8', 'UTF-8'); var_dump(json_encode($raw)); var_dump(json_encode($fixed));
Output for git.master, git.master_jit, rfc.property-hooks
bool(false) string(3) ""(""

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