mb_strrpos

Function • Params and return types changed in PHP 8.0

Find position of last occurrence of a string in a string.

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_strrpos Function synopsis

mb_strrpos(
    string $haystack,
    string $needle,
    int $offset = 0,
    ?string $encoding = null
  ): int|false

Parameters

$haystack

Typestring

The string being checked, for the last occurrence of $needle

$needle

Typestring

The string to find in $haystack.

$offset

OptionalTypeintDefault value0

$encoding

OptionalType?stringDefault valuenull

Return value

Typeint|false

Returns the numeric position of the last occurrence of $needle in the $haystack string. If $needle is not found, it returns false.

Changes to the mb_strrpos Function

PHP 8.0

  • Return type added: int|false
  • Parameter type added for parameter #1 ($haystack): string
  • Parameter type added for parameter #2 ($needle): string
  • Parameter type added for parameter #3 ($offset): int
  • Parameter default value added for position #3 ($offset): 0
  • Parameter type added for parameter #4 ($encoding): ?string
  • Parameter default value added for position #4 ($encoding): null
  mb_strrpos(
-     $haystack,
+     string $haystack,
-     $needle,
+     string $needle,
-     $offset,
+     int $offset = 0,
-     $encoding
+     ?string $encoding = null
-   )
+   ): int|false

mb_strrpos 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