PHP | Find the number of sub-string occurrences

We are given two strings s1 and s2. We need to find the number of occurrences of s2 in s1.

Examples:

Input : $s1 = "geeksforgeeks", $s2 = "geeks"
Output : 2
Explanation : s2 appears 2 times in s1

Input : $s1 = "Hello Shubham. how are you?";   
        $s2 = "shubham"
Output : 0
Explanation : Note the first letter of s2 
is different from substrings present in s1.



The problem can be solved using PHP in built function for counting the number of occurrences of a substring in a given string.The in built function used for the given problem is:

  • substr_count(): The substr_count() function counts the number of times a substring occurs in a string.
    Note: The substring is case-sensitive.
filter_none

edit
close

play_arrow

link
brightness_4
code

<?php
// PHP program to count number of times
// a s2 appears in s1.
  
$s1 = "geeksforgeeks";
$s2 = "geeks";
  
$res = substr_count($s1, $s2);
  
echo($res);
?>

chevron_right


Output :

2


My Personal Notes arrow_drop_up

Work hard till success becomes easier to achieve

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.




Article Tags :
Practice Tags :


Be the First to upvote.


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.