3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump( $conv = mb_convert_encoding( $bin = hex2bin("00"), "UTF-8", "UTF7-IMAP" ), mb_check_encoding($bin, "UTF7-IMAP"), bin2hex(mb_convert_encoding($conv, "UTF7-IMAP", "UTF-8")) );
preferences:
41.93 ms | 402 KiB | 5 Q