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<?php function replace_old_chrs_utf8($str) { $vd = strtoupper('ð'); $old = array('æ', 'Æ', 'è', 'È', 'ð', $vd); $new = array('ć', 'Ć', 'č', 'Č', 'đ', 'Đ'); $fin = str_replace($old, $new, $str); return $fin; } $testString = 'æ-Æ bananna è moose Èð'; var_dump(replace_old_chrs_utf8($testString));
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 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
string(27) "ć-Ć bananna č moose Čđ"

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275.78 ms | 405 KiB | 455 Q