iconv_strpos
(PHP 5, PHP 7)
iconv_strpos — Finds position of first occurrence of a needle within a haystack
Opis
$haystack
, string $needle
[, int $offset = 0
[, string $charset = ini_get("iconv.internal_encoding")
]] ) : int
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 charset.
Parametry
-
haystack -
The entire string.
-
needle -
The searched substring.
-
offset -
The optional
offsetparameter specifies the position from which the search should be performed. If the offset is negative, it is counted from the end of the string. -
charset -
If
charsetparameter is omitted,stringare 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.
Zwracane wartości
Returns the numeric position of the first occurrence of
needle in haystack.
If needle is not found,
iconv_strpos() will return FALSE.
Ta funkcja może
zwrócić Boolean FALSE, ale może też zwrócić wartość innego typu niż Boolean, która oznacza
wartość FALSE. Aby uzyskać więcej informacji proszę zapoznać się z rozdziałem Typy logiczne.
Można używać operatora ===
do testowania zwracanych wartości przez tę
funkcję.
Rejestr zmian
| Wersja | Opis |
|---|---|
| 7.1.0 |
Support for negative offsets has been added.
|
Zobacz też:
- strpos() - Find the position of the first occurrence of a substring in a string
- iconv_strrpos() - Finds the last occurrence of a needle within a haystack
- mb_strpos() - Find position of first occurrence of string in a string
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