Something I always wondered...

[Andy-H]

Say if I had a script using if/else blocks like so:

 

 

$myVar = true;


   if ( $myVar )
   {
      //Obviously this code executes.
   }
   else
   {
      // Does PHP waste time processing the code here or can it jump the block if a statement evaluates to 
      //false?
   } // I.E does it jump to this brace, without reading, processing, parsing w.e the contained code.

 

 

Thanks for any help here.

[oni-kun]

It of course has to parse the code to find the ending brace, It does not /run/ it but it does debug it.

$myVar = true;

if (isset($myVar)) {
  echo "I exist?";
} else {
   !@^&*What am I?^%$an error?&&&^&*^ 
}

 

Why not try that code?

[Andy-H]

Oh yeh, duhhhh lol =P

[ignace]

You could take up Assembler it will give you a good idea how a programming language works and an if/else for that matter. Your if and else are basically two blocks if the if fails (based on internal flags) it jumps to the else block otherwise it jumps to the if block. The good old' days