mb_strrpos

(PHP 4 >= 4.0.6, PHP 5)

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

Descrizione

int mb_strrpos ( string $haystack , string $needle [, int $offset [, string $encoding ]] )

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 string. Negative values will stop searching at an arbitrary point prior to the end of the string.
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.

Log delle modifiche

Versione	Descrizione
5.2.0	Added the optional parameter `offset` .

Note

Nota: The encoding parameter was moved from the third position to the fourth in PHP 5.2.0. For backward compatibility, encoding can be specified as the third parameter, but doing so is deprecated and will be removed in the future.

Nota: La codifica interna o la codifica dei caratteri specificata da mb_regex_encoding() sarà utilizzata come codifica ei caratteri per questa funzione.

Vedere anche:

add a note User Contributed Notes
mb_strrpos

28-Nov-2005 03:32


mb_strrpos throws a warning if $haystack is empty. 

strrpos simply returns FALSE.



This is something to be wary of if overloading the mb functions.

add a note

mb_strstr

mb_strripos

Last updated: Fri, 18 Jul 2008