format_ipv4()format_ipv4()

• 08/18/2020
• • o
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使用网络掩码分析输入，并返回表示 IPv4 地址的字符串。Parses input with a netmask and returns string representing IPv4 address.

print format_ipv4('192.168.1.255', 24) == '192.168.1.0'
print format_ipv4(3232236031, 24) == '192.168.1.0'

语法Syntax

format_ipv4(Expr [, PrefixMask])format_ipv4(Expr [, PrefixMask])

参数Arguments

• Expr ：IPv4 地址的字符串或数字表示形式。Expr: A string or number representation of the IPv4 address.
• PrefixMask ：（可选）从 0 到 32 的整数，表示所考虑的最有效位的数目。PrefixMask: (Optional) An integer from 0 to 32 representing the number of most-significant bits that are taken into account. 如果未指定参数，则使用所有位掩码 (32)。If argument isn't specified, all bit-masks are used (32).

返回Returns

如果转换成功，则结果将是一个表示 IPv4 地址的字符串。If conversion is successful, the result will be a string representing IPv4 address. 如果转换不成功，则结果将为空字符串。If conversion isn't successful, the result will be an empty string.

请参阅See also

• format_ipv4_mask()：适用于以 CIDR 表示法设置格式的 IPv4 地址。format_ipv4_mask(): For IPv4 address formatting including CIDR notation.
• IPv4 和 IPv6 函数IPv4 and IPv6 functions

示例Examples

datatable(address:string, mask:long)
[
 '192.168.1.1', 24,          
 '192.168.1.1', 32,          
 '192.168.1.1/24', 32,       
 '192.168.1.1/24', long(-1), 
]
| extend result = format_ipv4(address, mask), 
         result_mask = format_ipv4_mask(address, mask)