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PHP substr_count() Function

PHP substr_count() function is used to count the number of times a sub-string occurs in a given input string. It also provide an option to search for the given substring in a given range of the index. It is case-sensitive.

Syntax:

  substr_count($string, $substring, $start, $length);

Parameter Values

Parameter	Description
string	This is a required parameter. This parameter contains the string to check.
substring	This is a required parameter. This parameter defines the string to search for.
start	This is an optional parameter. This parameter defines where in string to start searching.
length	This is an optional parameter. This parameter defines the length of the search.

Here is an example of substr_count() function in PHP:

<html>
<body>

<?php
echo substr_count("PHP, PHPTPOINT, php, Python, PHP Framework","PHP");
?>

</body>
</html>

Output:
3

Here is an another example of substr_count() function in PHP:

<html>
<body>

<?php
$str = "Hello Everyone.. I am Jerry and i love PHP..";

echo substr_count($str,"e")."<br>";  // no defined start position
echo substr_count($str,"e",2)."<br>"; // start position is 2 ("l")
echo substr_count($str,"e",3)."<br>"; // start position is 3 
echo substr_count($str,"e",3,13)."<br>"; // start poition is 3 and length is 13 
?>

</body>
</html>

Output:
5
4
4
2

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