substr_count

PHP 4, PHP 5, PHP 7, PHP 8
substr_count - Count the number of substring occurrences

substr_count(
     string$haystack,
     string$needle,
     [int$offset = 0],
     [int|null$length = null]
): int

substr_count returns the number of times the needle substring occurs in the haystack string. Please note that needle is case sensitive.

Note:

This function doesn't count overlapped substrings. See the example below!

Parameters

haystack

The string to search in

needle

The substring to search for

offset

The offset where to start counting. If the offset is negative, counting starts from the end of the string.

length

The maximum length after the specified offset to search for the substring. It outputs a warning if the offset plus the length is greater than the haystack length. A negative length counts from the end of haystack.

Return Values

This function returns an int.

Changelog

Version Description
8.0.0 length is nullable now.
7.1.0 Support for negative offsets and lengths has been added. length may also be 0 now.

Related Functions

Example of substr_count

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PHP Version:


Function substr_count:

Strings Functions

Most used PHP functions