fix php.sh to support double quotes

[igorw]

The current script loses double quotes, meaning this will fail:

$ ./php.sh -r 'var_dump("hello");'

I was not sure if there was a reason for the -c subshell. Hence the PR. If that needs to stay, an alternate fix would be:

PARAMS="${PARAMS} \"${PARAM//\"/\\\"}\""

(from here, lol bash)

[asm89]

👍, "\$@" will just pass the values properly escaped.

Or is there a specific reason to do bash -c ?