I have lots of input sentences I want to normalize. What they have in common is that they don't have spaces after commas and periods.
Oval,delicate cupcakes.Very tasty.Enjoy.
What is a quickest way to normalize such sentences?
You can use:
$sentence = preg_replace('/([,.])(?!\s)/', '$1 ', $sentence);
[.,] - match either a dot or comma([.,]) - match and group for backreference(?!\s) is negative lookahead which means match if not followed by a space