gethostbyname Get the IPv4 address corresponding to a given Internet host name php函数


gethostbyname

(PHP 4, PHP 5)

gethostbyname Get the IPv4 address corresponding to a given Internet host name

说明

string gethostbyname ( string $hostname )

Returns the IPv4 address of the Internet host specified by hostname.

参数

hostname

The host name.

返回值

Returns the IPv4 address or a string containing the unmodified hostname on failure.

范例

Example #1 A simple gethostbyname() example

<?php
$ip 
gethostbyname('www.example.com');

echo 
$ip;
?>

参见

  • gethostbyaddr() - Get the Internet host name corresponding to a given IP address
  • gethostbynamel() - Get a list of IPv4 addresses corresponding to a given Internet host name
  • inet_pton() - Converts a human readable IP address to its packed in_addr representation
  • inet_ntop() - Converts a packed internet address to a human readable representation


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