Solving the warning message "Xdebug MUST be loaded as a Zend extension"
If you have installed the xdebug, and the PHP interpreter show the following warning message every time you execute the php command.
Xdebug MUST be loaded as a Zend extension
It can be solved by adding the following line in your php.ini (Replace the path of you xdebug.so if they are different.)
And remember to remove any statement like the following which caused the problem..