Title: Compatibility PHP 7.1 errors Last modified: March 1, 2018 --- # Compatibility PHP 7.1 errors * [Fafiou](https://wordpress.org/support/users/fafiou/) * (@fafiou) * [8 years, 4 months ago](https://wordpress.org/support/topic/compatibility-php-7-1-errors/) * Hello, * I’ve seen in a post on the forum that W3 is PHP 7.1 compatible. I’ve run the PHP Compatibility Checker plugin. * RESULT: 4 warnings, 8 errors * REPORT: * /wp-content/plugins/w3-total-cache/lib/Azure/MicrosoftAzureStorage/Common/Internal/ Utilities.php ——————————————————————————————————————————————————– FOUND 0 ERRORS AND 4 WARNINGS AFFECTING 3 LINES ——————————————————————————————————————————————————– 710 | WARNING | Function mcrypt_encrypt() is deprecated since PHP 7.1; Use OpenSSL instead 710 | WARNING | Extension ‘mcrypt’ is deprecated since PHP 7.1; Use openssl( preferred) or pecl/mcrypt once available instead 711 | WARNING | The constant“ MCRYPT_RIJNDAEL_128” is deprecated since PHP 7.1 714 | WARNING | The constant“ MCRYPT_MODE_ECB” is deprecated since PHP 7.1 ——————————————————————————————————————————————————– * FILE: /wp-content/plugins/w3-total-cache/ConfigDbStorage.php ————————————————————————————————————– FOUND 8 ERRORS AFFECTING 8 LINES ————————————————————————————————————– 227 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead 229 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead 250 | ERROR | Extension‘ mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead 289 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead 326 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead 347 | ERROR | Extension‘ mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead 365 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead 379 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead ————————————————————————————————————– * I hope this may help you. * Fabien - This topic was modified 8 years, 4 months ago by [Fafiou](https://wordpress.org/support/users/fafiou/). Viewing 3 replies - 1 through 3 (of 3 total) * [dadaas](https://wordpress.org/support/users/dadaas/) * (@dadaas) * [8 years, 4 months ago](https://wordpress.org/support/topic/compatibility-php-7-1-errors/#post-10047919) * Yes, confirmed by me. * And maybe this incompatibility with php 7.0 is triggering my error from different topic: [https://wordpress.org/support/topic/error-in-wp-db-php/](https://wordpress.org/support/topic/error-in-wp-db-php/) * [panoreel](https://wordpress.org/support/users/panoreel/) * (@panoreel) * [8 years, 3 months ago](https://wordpress.org/support/topic/compatibility-php-7-1-errors/#post-10120317) * Hi, * I would also like a definitive answer on this. I would like to upgrade to php 7.2 or at least 7.1 At the moment a couple of plugins are preventing me from doing this. * Report from compatibility checker gives the following for W3TC: * Name: W3 Total Cache * FILE: wp-content/plugins/w3-total-cache/lib/Azure/GuzzleHttp/Promise/functions. php ———————————————————————————————————— FOUND 0 ERRORS AND 3 WARNINGS AFFECTING 3 LINES ———————————————————————————————————— 222 | WARNING | Function each() is deprecated since PHP 7.2; Use a foreach loop instead 257 | WARNING | Function each() is deprecated since PHP 7.2; Use a foreach loop instead 313 | WARNING | Function each() is deprecated since PHP 7.2; Use a foreach loop instead ———————————————————————————————————— * FILE: wp-content/plugins/w3-total-cache/lib/Azure/MicrosoftAzureStorage/Common/ Internal/Utilities.php ——————————————————————————————————————————————————- FOUND 4 ERRORS AFFECTING 3 LINES ——————————————————————————————————————————————————- 710 | ERROR | Function mcrypt_encrypt() is deprecated since PHP 7.1 and removed since PHP 7.2; Use OpenSSL instead 710 | ERROR | Extension ‘mcrypt’ is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead 711 | ERROR | The constant “MCRYPT_RIJNDAEL_128” is deprecated since PHP 7.1 and removed since PHP 7.2 714 | ERROR | The constant “MCRYPT_MODE_ECB” is deprecated since PHP 7.1 and removed since PHP 7.2 ——————————————————————————————————————————————————- * FILE: wp-content/plugins/w3-total-cache/lib/CSSTidy/class.csstidy.php ———————————————————————————————– FOUND 0 ERRORS AND 2 WARNINGS AFFECTING 2 LINES ———————————————————————————————– 1083 | WARNING | Function each() is deprecated since PHP 7.2; Use a foreach loop instead 1122 | WARNING | Function each() is deprecated since PHP 7.2; Use a foreach loop instead ———————————————————————————————– * FILE: wp-content/plugins/w3-total-cache/lib/Minify/HTTP/Encoder.php ——————————————————————————————— FOUND 0 ERRORS AND 2 WARNINGS AFFECTING 2 LINES ——————————————————————————————— 92 | WARNING | INI directive ‘mbstring.func_overload’ is deprecated since PHP 7.2 93 | WARNING | INI directive ‘mbstring.func_overload’ is deprecated since PHP 7.2 ——————————————————————————————— * FILE: wp-content/plugins/w3-total-cache/lib/Minify/Minify/Cache/W3TCDerived.php ——————————————————————————————————— FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE ——————————————————————————————————— 56 | WARNING | INI directive ‘mbstring.func_overload’ is deprecated since PHP 7.2 ——————————————————————————————————— * FILE: wp-content/plugins/w3-total-cache/lib/Minify/Minify/JS/ClosureCompiler. php ———————————————————————————————————- FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE ———————————————————————————————————- 52 | WARNING | INI directive ‘mbstring. func_overload’ is deprecated since PHP 7.2 ———————————————————————————————————- * FILE: wp-content/plugins/w3-total-cache/lib/Minify/Minify/YUI/CssCompressor.php ——————————————————————————————————— FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE ——————————————————————————————————— 104 | WARNING | INI directive ‘mbstring.func_overload’ is deprecated since PHP 7.2 ——————————————————————————————————— * FILE: wp-content/plugins/w3-total-cache/lib/Minify/JSMin.php ————————————————————————————– FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE ————————————————————————————– 116 | WARNING | INI directive ‘mbstring.func_overload’ is deprecated since PHP 7.2————————————————————————————– * FILE: wp-content/plugins/w3-total-cache/lib/Minify/Minify.php ————————————————————————————— FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE ————————————————————————————— 350 | WARNING | INI directive ‘mbstring.func_overload’ is deprecated since PHP 7.2————————————————————————————— * FILE: wp-content/plugins/w3-total-cache/ConfigDbStorage.php ———————————————————————————————————— FOUND 8 ERRORS AFFECTING 8 LINES ———————————————————————————————————— 227 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead 229 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead 250 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead 289 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead 326 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead 347 | ERROR | Extension‘ mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead 365 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead 379 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0; Use mysqli instead ———————————————————————————————————— * [Daniel Iser](https://wordpress.org/support/users/danieliser/) * (@danieliser) * [7 years, 10 months ago](https://wordpress.org/support/topic/compatibility-php-7-1-errors/#post-10645102) * [@fafiou](https://wordpress.org/support/users/fafiou/) – Saw the same warnings, but here are my thoughts, may be wrong but based on the locations of the potential issues you may not have trouble if: * – Your not using Azure for any caching methods. – You are not using the DB caching methods – You are not using minify (use AutoOptimize instead). * Disk: Enhanced, Memcache & Redis for instance seem untouched by the issues listed in our reports. * Will be testing it today on 7.1 & maybe 7.2 once I clear up other potential issues. - This reply was modified 7 years, 10 months ago by [Daniel Iser](https://wordpress.org/support/users/danieliser/). Viewing 3 replies - 1 through 3 (of 3 total) The topic ‘Compatibility PHP 7.1 errors’ is closed to new replies. * ![](https://ps.w.org/w3-total-cache/assets/icon-256x256.png?rev=1041806) * [W3 Total Cache](https://wordpress.org/plugins/w3-total-cache/) * [Frequently Asked Questions](https://wordpress.org/plugins/w3-total-cache/#faq) * [Support Threads](https://wordpress.org/support/plugin/w3-total-cache/) * [Active Topics](https://wordpress.org/support/plugin/w3-total-cache/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/w3-total-cache/unresolved/) * [Reviews](https://wordpress.org/support/plugin/w3-total-cache/reviews/) ## Tags * [compatibility](https://wordpress.org/support/topic-tag/compatibility/) * [php-7](https://wordpress.org/support/topic-tag/php-7/) * 3 replies * 4 participants * Last reply from: [Daniel Iser](https://wordpress.org/support/users/danieliser/) * Last activity: [7 years, 10 months ago](https://wordpress.org/support/topic/compatibility-php-7-1-errors/#post-10645102) * Status: not resolved