(PHP 5, PHP 7)

iconv_strposFinds position of first occurrence of a needle within a haystack


iconv_strpos ( string $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.



The entire string.


The searched substring.


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.


If charset parameter is omitted, 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.

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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