note 127137 deleted from language.operators.comparison by crell

Note Submitter: Jeff Clayton ---- Simple usage of spaceship comparison operator with a switch statement: function spaceship_compare($a=NULL, $b=NULL) { $ret = NULL; if (isset($a) && isset($b)) { switch ($a <=> $b) { case -1: $ret = strval($a).' < '.strval($b); break; case 0: $ret = strval($a).' = '.strval($b); break; case 1: $ret = strval($a).' > '.strval($b); break; default: $ret = "Unspecified Error"; // this shouldn't ever happen break; } } return $ret; } $a=5; $b=18; $c=spaceship_compare($a,$b); echo ($c!=NULL?$c:'NULL')."<br />"; // '5 < 18' $a=5; $b=$a; $c=spaceship_compare($a,$b); echo ($c!=NULL?$c:'NULL')."<br />"; // '5=5' $a=19; $b=8; $c=spaceship_compare($a,$b); echo ($c!=NULL?$c:'NULL')."<br />"; // '19 > 8' $c=spaceship_compare(); echo ($c!=NULL?$c:'NULL')."<br />"; // 'NULL'