(PHP 5 >= 5.3.0, PECL intl >= 1.0.0)
grapheme_strstr — Returns part of haystack string from the first occurrence of needle to the end of haystack.
Procedural style
Returns part of haystack string from the first occurrence of needle to the end of haystack.
The input string. Must be valid UTF-8.
The string to look for. Must be valid UTF-8.
If TRUE, grapheme_strstr() returns the part of the haystack before the first occurrence of the needle.
Returns the portion of string, or FALSE if needle is not found.
Example #1 grapheme_strstr() 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_stristr( $char_a_ring_nfd . $char_o_diaeresis_nfd . $char_a_ring_nfd, $char_o_diaeresis_nfd));
?>
以上例程会输出：
o%CC%88a%CC%8A