Sometimes, the localhost that i am using gave me that "http 500 error" whenever i try to access it. But, restarting the computer solved that problem and I could access my files, until today. Today, even though i have changed nothing with my codes(same as yesterday), I cannot access my localhost and phpmyadmin even if i restart the pc. How can i solve it? what went wrong? I dont think that the problem is about my code structure because if it was I could not access localhost yesterday(I changed nothing)
Check the error log, it should have a more detailed description of the error. If you're using Apache look for a file named error.log probably in a folder called log
Actually I am also Have the same issue with the localhost so I eneble the rewrite mode of my wamp server and solve this issue.
For Localhost :
Apache -> Apache Modules -> rewrite module
Enable it and restart the services.
来源：https://stackoverflow.com/questions/9087291/localhost-http-500-internal-server-error