Title: PHP 7.1 compatibility errors
Last modified: April 27, 2018

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# PHP 7.1 compatibility errors

 *  [Jairo Ochoa](https://wordpress.org/support/users/jairoochoa/)
 * (@jairoochoa)
 * [8 years, 1 month ago](https://wordpress.org/support/topic/php-7-1-compatibility-errors/)
 * Hi,
 * Hosting in SiteGround and when trying to upgrade from PHP 7.0 to PHP 7.1 I get
   this messages:
 * FILE: /home/site/public_html/wp-content/plugins/tesla-login-customizer/lib/less.
   php/Less.php
    ———————————————————————————————— FOUND 3 ERRORS AND 3 WARNINGS 
   AFFECTING 4 LINES ———————————————————————————————— 92 | WARNING | INI directive‘
   mbstring.internal_encoding’ is deprecated since PHP 5.6. 93 | WARNING | INI directive‘
   mbstring.internal_encoding’ is deprecated since PHP 5.6. 227 | WARNING | INI 
   directive ‘mbstring.internal_encoding’ is deprecated since PHP 5.6. 10115 | ERROR
   | Bitwise shifts by negative number will throw an ArithmeticError in PHP 7.0 
   10115 | ERROR | Bitwise shifts by negative number will throw an ArithmeticError
   in PHP 7.0 10115 | ERROR | Bitwise shifts by negative number will throw an ArithmeticError
   in PHP 7.0 ————————————————————————————————
 * Many thanks

The topic ‘PHP 7.1 compatibility errors’ is closed to new replies.

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## Tags

 * [php 7.1](https://wordpress.org/support/topic-tag/php-7-1/)

 * 0 replies
 * 1 participant
 * Last reply from: [Jairo Ochoa](https://wordpress.org/support/users/jairoochoa/)
 * Last activity: [8 years, 1 month ago](https://wordpress.org/support/topic/php-7-1-compatibility-errors/)
 * Status: not resolved