note 36224 rejected from language.operators.increment by pollita

Note Submitter: lew@mailduct.com ---- WARNING: There is a GROSS inconsistency between the increment and decrement operators. DECREMENT will FAIL under certain circumstances. The PHP team has decided not to fix this problem. See Bug Report for more info: http://bugs.php.net/bug.php?id=20548</a> Here is example code (and output): <?php // Increment some blank/empty variables... $pos++; $pos++; $pos++; $neg--; $neg--; $neg--; // Show them to us now... print( "pos = $pos\n" ); print( "neg = $neg\n" ); // Now do it another way (forced typecast)... $ppp += 1; $ppp += 1; $ppp += 1; $nnn -= 1; $nnn -= 1; $nnn -= 1; // Show them to us now... print( "ppp = $ppp\n" ); print( "nnn = $nnn\n" ); # # Expected: # pos = 3 ppp = 3 # neg = -3 nnn = -3 # # Actual: # pos = 3 ppp = 3 # neg = nnn = -3 ?> Unlike the increment operator, which works fine, if you want to use the DECREMENT operator you should make sure your variable is first initialized to zero or any valid number!