"Binary safe"?

[Stephen Philbin]

I keep seeing on the PHP manual that it says whatever function has been binary safe since version whatever, but what exactly do they mean by, "binary safe"?

[the tree]

$foo = fopen('/abinarytypefile.exe','r');

binarysafefuction($foo); #That function wont screw up

[Stephen Philbin]

Ah. Groovy. Nice one Tree. I suppose it should have been obvious really. lol