IP address

Migrating servers using DNS TTL for minimum downtime

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You have your site running on an old hardware and want to migrate it to a new upgraded hardware which would result in change of the ipaddress of your site and in turn imply downtime for your site. You want to minimize the downtime due to the change in ipaddress. This can be easily achieved …

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Getting real client IP address in PHP

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Many times we need the visitor’s ipaddress for validation, security, spam prevention, etc. Getting the Visitor’s ipaddress is very easy in PHP. The simplest way to get the visitor’s/client’s ipaddress is using the $_SERVER[‘REMOTE_ADDR’] or $_SERVER[‘REMOTE_HOST’] variables. The variable in the $_SERVER array are created by the web server (like apache) and we can use …

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