3v4l.org

run code in 300+ PHP versions simultaneously
<?php function chk($a,$b){ mb_regex_encoding('SJIS-win'); $j=0; for($i=$a;$i<$b;$i++){ $s=sprintf('%x',$i); $hex = hex2bin($s); if(mb_check_encoding($hex)){ if (!mb_ereg($hex, $hex)){ echo "$s($hex):NG\n"; } }else{ } $j++; } echo "cnt:$j\n"; } chk(0xED40,0xFC51);

preferences:
60.43 ms | 402 KiB | 5 Q