grapheme_stristr

(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL intl >= 1.0.0)

grapheme_stristr — Returns part of haystack string from the first occurrence of case-insensitive needle to the end of haystack

说明

过程化风格

grapheme_stristr(string $haystack, string $needle, bool $beforeNeedle = false): string|false

Returns part of haystack string starting from and including the first occurrence of case-insensitive needle to the end of haystack.

参数

haystack: The input string. Must be valid UTF-8.
needle: The string to look for. Must be valid UTF-8.
beforeNeedle: If true, grapheme_stristr() returns the part of the haystack before the first occurrence of the needle (excluding needle).

返回值

Returns the portion of haystack, or false if needle is not found.

示例

示例 #1 grapheme_stristr() 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"
$char_O_diaeresis_nfd = "O\xCC\x88"; // 'LATIN CAPITAL LETTER O WITH DIAERESIS' (U+00D6) 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

参见

grapheme_stripos() - Find position (in grapheme units) of first occurrence of a case-insensitive string
grapheme_strpos() - Find position (in grapheme units) of first occurrence of a string
grapheme_strripos() - Find position (in grapheme units) of last occurrence of a case-insensitive string
grapheme_strrpos() - Find position (in grapheme units) of last occurrence of a string
grapheme_strstr() - Returns part of haystack string from the first occurrence of needle to the end of haystack
» Unicode Text Segmentation: Grapheme Cluster Boundaries