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<?php $string = ' '; $result = sscanf($string, '%c%n', $char, $offset); var_dump($result, $char, $offset); var_dump(sscanf($string, '%3c%n'));
Output for rfc.property-hooks, git.master_jit, git.master
int(2) string(0) "" int(0) array(2) { [0]=> string(0) "" [1]=> int(0) }

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