3v4l.org

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<?php mb_substitute_character("long"); var_dump( $conv = mb_convert_encoding( $bin = hex2bin("a3f8f3abc0ce8ffaa1bce3adfcf1b2"), "UTF-8", "eucJP-win" ), mb_check_encoding($bin, "eucJP-win"), bin2hex(mb_convert_encoding($conv, "eucJP-win", "UTF-8")) );
Output for 8.1.0 - 8.1.15, 8.2.0 - 8.2.2
string(21) "x鵯昔若∪餡" bool(true) string(30) "a3f8f3abc0ce8ffaa1bce3a2c0f1b2"
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.26
string(21) "x鵯昔若∪餡" bool(false) string(30) "a3f8f3abc0ce8ffaa1bce3a2c0f1b2"

preferences:
43.9 ms | 419 KiB | 18 Q