Php/docs/function.grapheme-stripos

来自菜鸟教程
跳转至:导航、​搜索

grapheme_stripos

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

grapheme_striposFind position (in grapheme units) of first occurrence of a case-insensitive string


说明

过程化风格

grapheme_stripos ( string $haystack , string $needle [, int $offset = 0 ] ) : int

Find position (in grapheme units) of first occurrence of a case-insensitive string


参数

haystack
The string to look in. Must be valid UTF-8.
needle
The string to look for. Must be valid UTF-8.
offset
The optional $offset parameter allows you to specify where in haystack to start searching as an offset in grapheme units (not bytes or characters). If the offset is negative, it is treated relative to the end of the string. The position returned is still relative to the beginning of haystack regardless of the value of $offset.


返回值

Returns the position as an integer. If needle is not found, grapheme_stripos() will return boolean FALSE.


更新日志

版本 说明
7.1.0 Support for negative offsets has been added.


范例

Example #1 grapheme_stripos() 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 grapheme_stripos( $char_a_ring_nfd . $char_a_ring_nfd . $char_o_diaeresis_nfd, $char_O_diaeresis_nfd);?>

以上例程会输出:

2

参见