How to Get the Local IP Address of a Computer Using PHP?

Obtaining Local IP Address in PHP

This article discusses a common question faced by developers: how to acquire the local IP address of a computer using PHP.

Question:
Can I retrieve the local IP address (e.g., 192.*....) of a computer running a PHP script, excluding the external IP?

Answer:

Yes, it is possible to obtain the local network card address with PHP.

Solution from Command-Line Interface (CLI):

For PHP versions prior to 5.3.0:

<code class="php">$localIP = getHostByName(php_uname('n'));</code>

For PHP versions 5.3.0 and above:

<code class="php">$localIP = getHostByName(getHostName());</code>

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