(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL intl >= 1.0.0)
grapheme_strstr — Returns part of haystack string from the first occurrence of needle to the end of haystack
过程化风格
Returns part of haystack string from the first occurrence of needle to the end of haystack (including the needle).
haystackThe input string. Must be valid UTF-8.
needleThe string to look for. Must be valid UTF-8.
beforeNeedle
If true, grapheme_strstr() returns the part of the
haystack before the first occurrence of the needle (excluding the needle).
Returns the portion of haystack, or false if needle is not found.
示例 #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));
?>以上示例会输出：
o%CC%88a%CC%8A