grapheme_strripos() - Grapheme函数

乐乐2年前 (2023-11-21)阅读数 53#技术干货

文章标签范例

grapheme_strripos()

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

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

说明

过程化风格
grapheme_strripos(string $haystack,string $needle[,int $offset= 0]): int

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

参数

$haystack

The string to look in. Must be valid UTF-8.

grapheme_strripos() - Grapheme函数

$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). 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_strripos()will return boolean FALSE.

范例

grapheme_strripos()example

以上例程会输出：

参见

grapheme_stripos()Find position(in grapheme units)of first occurrence of a case-insensitive string
grapheme_stristr()Returns part of haystack string from the first occurrence of case-insensitive needle to the end of haystack
grapheme_strpos()Find position(in grapheme units)of first occurrence of a 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

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