count - Count the number of occurrences of a string

The count function returns the number of occurrences of the substring needle within the string haystack.

count(haystack, needle)

Argument	Description
`haystack`	The string in which the occurrences are to be counted.
`needle`	The substring whose occurrences within `haystack` are to be counted.

The function returns the number of occurrences of needle in haystack as an integer.

Description	Formula	Result
Simple word count	count("Banana Banana Apple", "Banana")	2
Counting a character	count("abcabcabc", "a")	3
Substring in a sentence	count("This is a Test. Test Test!", "Test")	3

Case sensitivity: The search is case-sensitive. Uppercase and lowercase letters must match.
Substring not found: If needle is not found in haystack, the function returns 0.