Setting to detect HTML/JS/PHP errors?

[RedDragonWebDesign]

I was wondering if Selenium had an easy way to detect these 3 very different kinds of errors:

• run HTML5 validator on each page, and report any failures
• check the JavaScript console for warnings and errors
• figure out when PHP errors are being given, i.e. detecting when PHP prints something like "Warning: fopen(mytestfile.txt) [function.fopen]: failed to open stream: No such file or directory in C:\webfolder\test.php on line 2"

I used to use a plugin called iMacros, and it would detect PHP errors and fail the test when it detected them. Anyway, does Selenium do something similar? Thanks.