PHP：允许字母，数字和阿拉伯字符

Question

如何在preg_match中允许阿拉伯字符？

if(!preg_match("/^[a-zA-Z0-9]+$/", "لحمدلله")) {
    echo "Firstname can only use letters, numbers and arabic characters.";
}

Answer 1

你可以用这个：

if(!preg_match("/^[\p{Arabic}a-zA-Z0-9]+$/u", "لحمدلله")) {
    echo "Firstname can only use letters, numbers and arabic characters.";
}