mb_substr_count

Function • Params and return types changed in PHP 8.0

Count the number of substring occurrences.

PHP 5
PHP 7
PHP 8.0
Improved
PHP 8.1
PHP 8.2-8.3
PHP 8.4
PHP 8.5
PHP 8.6

mb_substr_count Function synopsis

mb_substr_count(
    string $haystack,
    string $needle,
    ?string $encoding = null
  ): int

Parameters

$haystack

Typestring

The string being checked.

$needle

Typestring

The string being found.

$encoding

OptionalType?stringDefault valuenull

Return value

Typeint

The number of times the $needle substring occurs in the $haystack string.

Changes to the mb_substr_count Function

PHP 8.0

  • Return type added: int
  • Parameter type added for parameter #1 ($haystack): string
  • Parameter type added for parameter #2 ($needle): string
  • Parameter type added for parameter #3 ($encoding): ?string
  • Parameter default value added for position #3 ($encoding): null
  mb_substr_count(
-     $haystack,
+     string $haystack,
-     $needle,
+     string $needle,
-     $encoding
+     ?string $encoding = null
-   )
+   ): int

mb_substr_count Function Availability

PHP VersionAvailability
PHP 8.6Upcoming Release Yes
PHP 8.5Supported (Latest) Yes
PHP 8.4Supported Yes
PHP 8.3Security-Fixes Only Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Unsupported Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported Yes
PHP 7.0Unsupported Yes
PHP 5.6Unsupported Yes
PHP 5.5Unsupported Yes
PHP 5.4Unsupported Yes
PHP 5.3Unsupported Yes