#49679 [NEW]: Suggestion: addition of inequalities example to switch docs

From: matt at plasmacoustics dot com Operating system: PHP version: Irrelevant PHP Bug Type: Documentation problem Bug description: Suggestion: addition of inequalities example to switch docs Description: ------------ I feel the SWITCH documentation might best include code for dealing with inequalities in a CASE, using switch(TRUE). People are posting User Notes with implementations relying on type conversion of a random number to boolean TRUE, as the switch argument. This will cause a confusing logic error any time the argument is zero. Here's an example to help people get the right idea: Reproduce code: --------------- <?php $rand=rand(-3,+3); // Good use of switch() with inequalities: note TRUE is the argument, and all rand() outcomes are covered without overlap switch(TRUE) { case $rand < 0: print "$rand is less than zero"; break; case $rand == 0: print "$rand is equal to zero"; break; case $rand > 0: print "$rand is greater than zero"; break; } ?> -- Edit bug report at http://bugs.php.net/?id=49679&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=49679&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=49679&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=49679&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=49679&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=49679&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=49679&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=49679&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=49679&r=needscript Try newer version: http://bugs.php.net/fix.php?id=49679&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=49679&r=support Expected behavior: http://bugs.php.net/fix.php?id=49679&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=49679&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=49679&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=49679&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49679&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=49679&r=dst IIS Stability: http://bugs.php.net/fix.php?id=49679&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=49679&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=49679&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=49679&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=49679&r=mysqlcfg