note 127137 added to language.operators.comparison

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' ---- Server IP: 45.112.84.4 Probable Submitter: 80.90.12.131 (proxied: 172.72.88.12) ---- Manual Page -- https://php.net/manual/en/language.operators.comparison.php Edit -- https://main.php.net/note/edit/127137 Del: integrated -- https://main.php.net/note/delete/127137/integrated Del: useless -- https://main.php.net/note/delete/127137/useless Del: bad code -- https://main.php.net/note/delete/127137/bad+code Del: spam -- https://main.php.net/note/delete/127137/spam Del: non-english -- https://main.php.net/note/delete/127137/non-english Del: in docs -- https://main.php.net/note/delete/127137/in+docs Del: other reasons-- https://main.php.net/note/delete/127137 Reject -- https://main.php.net/note/reject/127137 Search -- https://main.php.net/manage/user-notes.php