What is the use of substr_count() in PHP?

The substr_count() function counts how many times a small text (substring) is found in a bigger string.

<?php
echo substr_count("hello world, hello PHP", "hello") . "<br>";

// Overlapping matches are not counted twice
echo substr_count("aaa", "aa");
?>

Output:

• It is case-sensitive. “Hello” and “hello” are different.
• It does not count overlapping matches.
• To count the words of a string use str_word_count(), and to count array elements use count().

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