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Networking Functions


This chapter contains a mixed bag of networking-related functions. The extension contains functions to query DNS resource records, activate and deactivate PHP 3's internal debugger, and read from and write to sockets. There are also functions to convert or look up domain name, IP address, protocol, and service information. See the following list of functions grouped by use.

Warning

When using the PHP binaries for Windows that are available from http://php.net/, the getprotobyname() , getprotobynumber() , getservbyport() , and getservbyname() may not function as anticipated under Windows 2000.

DNS resource records
  • checkdnsrr()

  • getmxrr()

Domain name/IP address lookups and conversions
  • gethostbyaddr()

  • gethostbyname()

  • gethostbynamel()

  • ip2long()

  • long2ip()

Internet protocol and service information
  • getprotobyname()

  • getprotobynumber()

  • getservbyname()

  • getservbyport()

PHP 3 debugger

Warning

Very broken!

  • debugger_off()

  • debugger_on()

Sockets
  • fsockopen()

  • pfsockopen()

  • socket_get_status()

  • socket_set_blocking()

  • socket_set_timeout()



For additional network-related functions, see the Filesystem, cURL, and Socket modules.




PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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