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<?php // n-dashes are encoded as byte sequence \xe2\x80\x93 in UTF-8 $str = 'foo–bar–baz'; // take substring of 4 bytes length starting with the 4th byte var_dump(mb_strcut($str, 4, 4, 'UTF-8')); // take substring of 4 code points length starting with the 4th code point var_dump(mb_substr($str, 4, 4, 'UTF-8'));
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.27, 7.4.0 - 7.4.15, 8.0.0 - 8.0.3
string(4) "–b" string(6) "bar–"