mb_ereg_search_setpos

Function name: mb_ereg_search_setpos()

Applicable version: PHP 4 >= 4.2.0, PHP 5, PHP 7

Function Description: Used to set the search position of a multibyte regular expression. This function sets the search position to the specified offset and limits the search range to the part of the string after that offset.

Usage: mb_ereg_search_setpos(int $position): bool

parameter:

• position: The offset of the search position to be set.

Return value:

• Return true if the search position is successfully set. If an error occurs, false is returned.

Example:

 // 设置多字节正则表达式搜索位置mb_ereg_search_setpos(5); // 使用mb_ereg_search_regs() 函数获取匹配的结果$matches = mb_ereg_search_regs('正则表达式', '这是一个测试字符串'); if ($matches) { echo "匹配结果："; print_r($matches); } else { echo "没有找到匹配的结果。"; }

In the example above, we first call the mb_ereg_search_setpos() function to set the search position to a position with an offset of 5. We then use the mb_ereg_search_regs() function to perform a search for multibyte regular expressions and store the matching results in the $matches variable. Finally, we check whether the $matches variable contains matching results and output the corresponding information.

Note that the parameter 'regex' in the example is a schematic parameter, and you need to replace it with the specific regular expression you want to use according to the actual situation.