(PHP 5, PHP 7, PHP 8)
iconv_strpos — Finds position of first occurrence of a needle within a haystack
$haystack
,$needle
,$offset
= 0,$encoding
= null
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
.
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.
Returns the numeric position of the first occurrence of
needle
in haystack
.
If needle
is not found,
iconv_strpos() will return false
.
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.
Version | Description |
---|---|
8.0.0 |
encoding is nullable now.
|
7.1.0 |
Support for negative offset s has been added.
|