PHP Version popularity

PHP is the most popular scripting language to create dynamic websites, even massive sites like Google and Facebook use it. Below you can see historical data on the PHP version popularity.
To generate these statistics we have extracted the X-Powered-By field from the HTTP headers of each website in our database. Websites that do not share this information are excluded.
PHP Versions
# PHP Version Percentage
1 PHP 5 90.12%
2 PHP 7 9.22%
3 PHP 4 0.66%
4 PHP 6 0%
5 PHP 3 0%