Searches for all functions declared in the given file, and writes their correspondent bytecodes to the open file handle.
A file handle as returned by fopen().
The file to be compiled. You must always include or require the file you intend to compile.
$fh = fopen("/tmp/example","w");
This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.