PHP Manual»Multibyte String Funzioni»mb_strrpos

mb_strrpos

(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)

mb_strrpos — Find position of last occurrence of a string in a string

Descrizione

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

Performs a multibyte safe strrpos() operation based on the number of characters. needle position is counted from the beginning of haystack. First character's position is 0. Second character position is 1.

Elenco dei parametri

haystack: The string being checked, for the last occurrence of needle
needle: The string to find in haystack.
offset: May be specified to begin searching an arbitrary number of characters into the haystack. Negative values will stop searching at an arbitrary point prior to the end of the haystack.
encoding: Il parametro encoding è la codifica dei caratteri. Se è omesso, verrà utilizzata la codifica interna.

Valori restituiti

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

Errori/Eccezioni

If offset is greater than the length of haystack, a ValueError will be thrown.

Log delle modifiche

Versione	Descrizione
8.0.0	`needle` now accepts an empty string.
8.0.0	Passing the `encoding` as the third argument instead of an `offset` has been removed.
8.0.0	`encoding` is nullable now.

Vedere anche:

mb_strpos() - Find position of first occurrence of string in a string
mb_internal_encoding() - Set/Get internal character encoding
strrpos() - Trova la posizione dell'ultima occorrenza di un carattere in una stringa