Debugging techniques

#ifdef DEBUG
# define DPRINTF(...) fprintf(stderr, __VA_ARGS__);
#else
# define DPRINTF(...)
#endif

try {
   //something that fails
} catch {
   //do nothing
}

#ifdef DEBUG
#define DBG x printf x
#else
#define DBG x do {} while (0)
#endif

void my_printf(int section, int level, ...)
{
    if (global_debug_off)
        return;
    //do you stuff here
}

<pre>

var_dump()

print_r()