grapheme_substr
Return part of a string
Description
Procedural style
stringfalse grapheme_substr(string $string
, int $offset
, intnull $length
= null
)
Parameters
-
string
-
The input string. Must be valid UTF-8.
-
offset
-
Start position in default grapheme units.
If offset
is non-negative, the returned string will start at the
offset
'th position in string
, counting from zero. If offset
is negative,
the returned string will start at the offset
'th grapheme unit from the
end of string.
-
length
-
Length in grapheme units.
If length
is given and is positive, the string returned will contain
at most length
grapheme units beginning from offset
(depending on the
length of string). If length
is given and is negative, then
that many grapheme units will be omitted from the end of string (after the
start position has been calculated when offset
is negative). If offset
denotes a position beyond this truncation, an empty string will be returned.
Return Values
Returns the extracted part of string
, or false
on failure.
Examples
Example #1 grapheme_substr example
<?php
$char_a_ring_nfd = "a\xCC\x8A"; // 'LATIN SMALL LETTER A WITH RING ABOVE' (U+00E5) normalization form "D"
$char_o_diaeresis_nfd = "o\xCC\x88"; // 'LATIN SMALL LETTER O WITH DIAERESIS' (U+00F6) normalization form "D"
print urlencode(grapheme_substr( "ao" . $char_a_ring_nfd . "bc" . $char_o_diaeresis_nfd . "O", 2, -1 ));
?>
The above example will output: