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mb_strrpos

(PHP 4 >= 4.0.6, PHP 5)

mb_strrposFind position of last occurrence of a string in a string

Descrizione

int mb_strrpos ( string $haystack , string $needle [, int $offset = 0 [, string $encoding = mb_internal_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.

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

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User Contributed Notes 1 note

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Anonymous
8 years ago
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.
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