(PHP 5, PHP 7, PHP 8)

iconv_strposFinds position of first occurrence of a needle within a haystack


    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.



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 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.

Valor Retornado

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

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


Esta função pode retornar o valor booleano false, mas também pode retornar um valor não booleano que pode ser interpretado como false. Leia a seção sobre Booleanos para mais informações. Use o operador === para testar o valor retornado por esta função.


Versão Descrição
8.0.0 encoding is nullable now.
7.1.0 Support for negative offsets has been added.

Veja Também

  • strpos() - Encontra a posição da primeira ocorrência de uma 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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