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iconv_strpos

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(PHP 5, PHP 7)

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

Description

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.

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Parameters

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.

charset

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.

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Return Values

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

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

Warning

This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on Booleans for more information. Use the === operator for testing the return value of this function.

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Changelog

Version Description
7.1.0 Support for negative offsets has been added.

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See Also

  • 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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Document created the 30/01/2003, last modified the 26/10/2018
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References

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