intl Fonctionsgrapheme_extract
(No version information available, might be only in CVS)
grapheme_extract — Function to extract a sequence of default grapheme clusters from a text buffer, which must be encoded in UTF-8.
Description
Procedural style
Function to extract a sequence of default grapheme clusters from a text buffer, which must be encoded in UTF-8.
Liste de paramètres
- haystack
-
String to search.
- size
-
Maximum number items - based on the $extract_type - to return.
- extract_type
-
Defines the type of units referred to by the $size parameter:
- GRAPHEME_EXTR_COUNT (default) - $size is the number of default grapheme clusters to extract.
- GRAPHEME_EXTR_MAXBYTES - $size is the maximum number of bytes returned.
- GRAPHEME_EXTR_MAXCHARS - $size is the maximum number of UTF-8 characters returned.
- start
-
Starting position in $haystack in bytes - if given, it must be zero or a positive value that is less than or equal to the length of $haystack in bytes. The default is zero. If $start does not point to the first byte of a UTF-8 character, the start position is moved to the next character boundary.
- next
-
Reference to a value that will be set to the next starting position. When the call returns, this may point to the first byte position past the end of the string.
Valeurs de retour
A string starting at offset $start and ending on a default grapheme cluster boundary that conforms to the $size and $extract_type specified.
Exemples
Exemple #1 grapheme_extract() 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_extract( $char_a_ring_nfd . $char_o_diaeresis_nfd, 1, GRAPHEME_EXTR_COUNT, 2));
?>
L'exemple ci-dessus va afficher :
o%CC%88
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