PHP linting problem

[gudmdharalds]

In some cases the PHP linting performed by vip-go-ci may return no results even though there is a syntax error in a file. This can happen if PHP outputs extra data at the beginning of output, for example warnings like this:

PHP Warning:  Missing arginfo for svn_checkout() in Unknown on line 0
PHP Warning:  Missing arginfo for svn_cat() in Unknown on line 0
PHP Warning:  Missing arginfo for svn_ls() in Unknown on line 0

This is because the PHP linting process will search for Parse error at the very beginning, at position 0. See code here. We should be looking for Parse error anywhere in the output.