Question

I am parsing some text line by line and if a given line ends with any punctuation or a number I’d like to have a boolean return true.

Is regex the best way or should I iterate with an array of chars to match? Feels like the array would be far too big and costly…

Could someone help me with the regex if that is indeed a good way?

function ends_with_punctuation_or_num($string){
   // check if the string ends with punctuation or a number
    if (/* TODO */)
        return true;
    else
        return false;
}

Answer 1

Put this into your if-check:

preg_match("/[0-9.!?,;:]$/", $string)

That will match a digit, or any of the given punctuation characters right before the end of the string ($). Add any other punctuation characters you want to regard as a match into the character class (the square brackets).