Re: Re: [PHP] Local variable protection

On 13 Oct 2011 at 16:25, Tedd Sperling <tedd.sperling@gmail.com> wrote: > So, if in your main script you have the statement: > > $myVar = 'test'; > > Then the $GLOBAL['myVar'] has also been created and will hold the value of > 'test' without any additional coding. > > While many of you will say "But of course, that's the way it works." I > actually said "What?!?" You see, I seldom use globals in my scripts and this > runs counter to my 'keep the globals to an absolute minimum' practice. So > while I was thinking my scripts didn't have globals, it was a surprise to me > to find out that in the background they were present anyway. > > So, if you want a main script variable (i.e., $myVar) to be accessed by a > function, you can do it by stating: > > myFunction > { > global $myVar; > // and then using $myVar > } > > or > > myFunction > { > $myVar = $GLOBAL['myVar'] > // and then using $myVar > } But presumably these are not *quite* equivalent, as modifying $myVar will change the global in the first but not in the second. -- Cheers -- Tim