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grapheme_substr
(No version information available, might be only in CVS)
grapheme_substr — Return part of a string
Description
Procedural style
Return part of a string
Parameters
- string
-
The input string. Must be valid UTF-8.
- start
-
Start position in default grapheme units. If $start is non-negative, the returned string will start at the $start'th position in $string, counting from zero. If $start is negative, the returned string will start at the $start'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 $start (depending on the length of string). If $string is less than or equal to $start grapheme units long, FALSE will be returned. 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 a start is negative). If $start denotes a position beyond this truncation, an empty string will be returned.
Return Values
Returns the extracted part of $string.
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:
a%CC%8Abco%CC%88
See Also
- grapheme_extract()
- grapheme_extractB()
- » Unicode Text Segmentation: Grapheme Cluster Boundaries
