Title: PHP Version
Last modified: January 18, 2018

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# PHP Version

 *  [ferbert](https://wordpress.org/support/users/ferbert/)
 * (@ferbert)
 * [8 years, 2 months ago](https://wordpress.org/support/topic/php-version-35/)
 * Hello All. Simple question. I am currently running WordPress on IIS – and using
   PHP version 5.4.45. Can I upgrade PHP to the latest version without causing an
   outage? Let me know, and thanks!

Viewing 1 replies (of 1 total)

 *  [abletec](https://wordpress.org/support/users/abletec/)
 * (@abletec)
 * [8 years, 2 months ago](https://wordpress.org/support/topic/php-version-35/#post-9874308)
 * Hi, Ferbert, & welcome. That rather depends on the plugins and themes you’re 
   using. But 5.4 has reached end-of-life status, so you should really upgrade ASAP.
   If any of your plugins or your theme is not sufficiently maintained to support
   a version of Php beyond what you’re running now, then I’d suggest looking for
   another plugin or theme w/similar functionality, as inability to upgrade leaves
   your site vulnerable.
 * HTH.

Viewing 1 replies (of 1 total)

The topic ‘PHP Version’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 2 participants
 * Last reply from: [abletec](https://wordpress.org/support/users/abletec/)
 * Last activity: [8 years, 2 months ago](https://wordpress.org/support/topic/php-version-35/#post-9874308)
 * Status: not resolved

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