iconv_strpos

(PHP 5, PHP 7, PHP 8)

iconv_strpos — Finds position of first occurrence of a needle within a haystack

Descrizione

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

Finds position of first occurrence of a needle within a haystack.

In contrast to strpos(), the return value of iconv_strpos() is the number of characters that appear before the needle, rather than the offset in bytes to the position where the needle has been found. The characters are counted on the basis of the specified character set encoding.

Elenco dei parametri

haystack: The entire string.
needle: The searched substring.
offset: The optional offset parameter specifies the position from which the search should be performed. If the offset is negative, it is counted from the end of the string.
encoding: If encoding parameter is omitted or null, string are assumed to be encoded in iconv.internal_encoding.

If haystack or needle is not a string, it is converted to a string and applied as the ordinal value of a character.

Valori restituiti

Returns the numeric position of the first occurrence of needle in haystack.

If needle is not found, iconv_strpos() will return false.

Avviso

Questa funzione può restituire il Booleano false, ma può anche restituire un valore non-Booleano valutato come false. Fare riferimento alla sezione Booleans per maggiori informazioni. Usare l'operatore === per controllare il valore restituito da questa funzione.

Log delle modifiche

Versione	Descrizione
8.0.0	`encoding` is nullable now.
7.1.0	Support for negative `offset`s has been added.

Vedere anche:

strpos() - Trova la posizione della prima occorrenza di una stringa
iconv_strrpos() - Finds the last occurrence of a needle within a haystack
mb_strpos() - Find position of first occurrence of string in a string