PHP 랜덤 문자열 생성기
function generateRandomString($length = 25) {
$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$charactersLength = strlen($characters);
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= $characters[rand(0, $charactersLength - 1)];
}
return $randomString;
}
//usage
$myRandomString = generateRandomString(5);
텍스트 상자는 php 에서 특수 문자가 아닌 영숫자 만 받아 들여야합니다
if(ctype_alnum($string)){
echo "Yes, It's an alphanumeric string/text";
}
else{
echo "No, It's not an alphanumeric string/text";
}