New basic network function tests. Tested on Windows, Linux and Linux 64 bit

ext/standard/tests/network/gethostbyaddr_basic1.phpt

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+--TEST--
+Test gethostbyaddr() function : basic functionality 
+--FILE--
+<?php
+/* Prototype  : string gethostbyaddr  ( string $ip_address  )
+ * Description: Get the Internet host name corresponding to a given IP address 
+ * Source code: ext/standard/dns.c
+*/
+
+echo "*** Testing gethostbyaddr() : basic functionality ***\n";
+echo gethostbyaddr("127.0.0.1")."\n";
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing gethostbyaddr() : basic functionality ***
+%rloopback|localhost(\.localdomain)?%r
+===DONE===

ext/standard/tests/network/gethostbyname_basic003.phpt

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+--TEST--
+Test gethostbyname() function : basic functionality 
+--FILE--
+<?php
+/* Prototype  : string gethostbyname  ( string $hostname  )
+ * Description: Get the IPv4 address corresponding to a given Internet host name 
+ * Source code: ext/standard/dns.c
+*/
+
+echo "*** Testing gethostbyname() : basic functionality ***\n";
+
+echo gethostbyname("localhost")."\n";
+?>
+===DONE===
+--EXPECT--
+*** Testing gethostbyname() : basic functionality ***
+127.0.0.1
+===DONE===

ext/standard/tests/network/gethostbynamel_basic1.phpt

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+--TEST--
+Test gethostbynamel() function : basic functionality 
+--FILE--
+<?php
+/* Prototype  : array gethostbynamel  ( string $hostname  )
+ * Description: Get a list of IPv4 addresses corresponding to a given Internet host name 
+ * Source code: ext/standard/dns.c
+*/
+
+echo "*** Testing gethostbynamel() : basic functionality ***\n";
+var_dump(gethostbynamel("localhost"));
+?>
+===DONE===
+--EXPECTF--
+*** Testing gethostbynamel() : basic functionality ***
+array(%d) {
+  %a
+}
+===DONE===