The <=> (“Spaceship”) operator will offer combined comparison in that it will : Return 0 if values on either side are equal Return 1 if the value on the left is greater Return -1 if the value on the right is greater The rules used by the combined comparison operator are the same as the … Read more
First of all, read the warning! It says do not run composer as root! Secondly, you’re probably using Xammp on your local which has the required php libraries as default. But in your server you’re missing ext-dom. php-xml has all the related packages you need. So, you can simply install it by running: sudo apt-get … Read more
When your first argument is null, they’re basically the same except that the null coalescing won’t output an E_NOTICE when you have an undefined variable. The PHP 7.0 migration docs has this to say: The null coalescing operator (??) has been added as syntactic sugar for the common case of needing to use a ternary … Read more