Sebastian,
On Wed, Aug 14, 2013 at 7:44 AM, Sebastian Krebs <krebs....@gmail.com>wrote: > Hi, > > Just asking: Does this cover only declarations, or every constant > expression, for example > > $weeks = $secs / (60 * 60 * 24 * 7); > > becomes to the opcode-equivalent of > > $weeks = $secs / (604800); > > ? > Currently, only places that use the static_scalar parser definition will use this: http://lxr.php.net/xref/PHP_TRUNK/Zend/zend_language_parser.y#945 So today that's constants (using const keyword), class constants, class properties, function parameter values and declare statements. To do the other part would likely need to happen in the compiler itself (look for all opcodes of type _SPEC_CONST_CONST, and then optimize those away). I will experiment a bit, but my gut tells me it will result in a lot of parser or compiler complexity to attempt to do that (for which there will be so little gain, as the runtime performance is already quite fast)... At which point the complexity isn't worth it. Anthony
