Returns position and length of a matched part of the multibyte regular expression for a predefined multibyte string

# mb_ereg_search_pos

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

mb_ereg_search_pos — Returns position and length of a matched part of the multibyte regular expression for a predefined multibyte string

### 说明

function mb_ereg_search_pos(?string `$pattern` = `null`, ?string `$options` = `null`): array|false

Returns position and length of a matched part of the multibyte regular expression for a predefined multibyte string

The string for match is specified by mb_ereg_search_init(). If it is not specified, the previous one will be used.

### 参数

`pattern`

  The search pattern.

`options`

  The search option. See mb_regex_set_options() for explanation.

### 返回值

An array containing two elements. The first element is the offset, in bytes, where the match begins relative to the start of the search string, and the second element is the length in bytes of the match.

If an error occurs, `false` is returned.

### 更新日志

版本 | 说明
--- | ---
8.0.0 | `pattern` and `options` are nullable now.

### 注释

> 注意: mb_regex_encoding() 指定的内部编码或字符编码将会当作此函数用的字符编码。

### 参见

- mb_regex_encoding() - Set/Get character encoding for multibyte regex
- mb_ereg_search_init() - Setup string and regular expression for a multibyte regular expression match

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