new line in php string variable code example

Example 1: php variable in echo

echo 'Hello '.$variableName.'!';

Example 2: assigning a value to a character in string or text file in python

note:text can contain your text file that is already read or a string

text = 'hello'

vocab=sorted(set(text))
char_to_ind = {char:ind for ind,char in enumerate(vocab)}