Fix and customize W3 Total Cache by @ftownes

1. Deactivate official plugin from WP.org
2. Delete plugin directory w3-total-cache by hand, DO NOT click "Delete" on Plugins page
3. Unpack master in /wp-content/plugins/
4. Rename the extracted directory from fix-w3tc-master to w3-total-cache
5. Activate w3tc
6. Check that it's working

• Modernize deprecated WordPress code
• Support PHP7 disallow reference arguments
• Add Memcache(d) support
• Add APCu support
• Support OPcache
• Support WOFF2 font format
• Fix https caching
• Halfdone CloudFlare support in trunk
• Support AMP
• Support Redis

• Disable edge mode evaluation.reminder
• Hide most widgets from W3TC Dashboard
• Remove informational submenus $pages_tail
• Remove contextual help w3tc_*
• Make admin pages smaller #w3tc h2.logo { float: right; }
• Remove HTML comment by hooking w3tc_can_print_comment
• Disable EDD/licensing

• FAQ
• Support
• Install
• About

• W3_Plugin_NewRelicAdmin
• W3_Licensing

• W3_Widget_SpreadTheWord
• W3_Widget_News
• W3_Widget_Forum
• W3_Widget_MaxCDN
• W3_Widget_NetDNA
• W3_Widget_NewRelic

find -type f -name "*.php" -exec php -l "{}" ";"

svn: https://plugins.svn.wordpress.org/w3-total-cache/

git: https://github.com/wp-plugins/w3-total-cache.git

In version 7.0.9 reference arguments were disallowed in call_user_func().

This is how to find them in the code:

grep -Fnr 'ob_callback(&$buffer)' w3-total-cache/*

Props. IT Nota

• https://github.com/bermanco/w3-total-cache-php7
• https://github.com/tperalta82/w3-total-cache-ng
• https://github.com/wp-plugins/w3tc-auto-pilot
• https://github.com/StefanoWP/W3-Total-Cache-WordPress-Plugin-Default-Settings