Bug #69466 [Ver]: Spaceship operator rfc discrepancy

Edit report at https://bugs.php.net/bug.php?id=69466&edit=1 ID: 69466 Updated by: levim@php.net Reported by: ppasindud at gmail dot com Summary: Spaceship operator rfc discrepancy Status: Verified Type: Bug Package: *General Issues Operating System: not need PHP Version: master-Git-2015-04-16 (Git) Block user comment: N Private report: N New Comment: This ends up using zend_hash_compare; see http://lxr.php.net/xref/PHP_TRUNK/Zend/zend_hash.c#zend_hash_compare In this case it cannot find key "a" in $b so it returns 1. Previous Comments: ------------------------------------------------------------------------ [2015-04-16 11:17:51] cmb@php.net It seems the RFC[1] contradicts itself: | It is implemented by using the result of the existing internal | compare_function that underlies the other comparison operators. but: | // only values are compared | $a = (object) ["a" => "b"]; | $b = (object) ["b" => "b"]; | echo $a <=> $b; // 0 However: var_dump($a < $b); // => bool(false) var_dump($b < $a); // => bool(false) And currently: echo $a <=> $b; // => 1 echo $b <=> $a; // => 1 Apparently, there is a problem with comparing unordered values with the spaceship operator. [1] <https://wiki.php.net/rfc/combined-comparison-operator> ------------------------------------------------------------------------ [2015-04-16 08:32:27] ppasindud at gmail dot com Description: ------------ http://3v4l.org/g5mCe Test script: --------------- <?php $a = (object) ["a" => "c"]; $b = (object) ["a" => "b"]; echo $a <=> $b; // 1 // only values are compared $a = (object) ["a" => "b"]; $b = (object) ["b" => "b"]; echo $a <=> $b; // 0 Expected result: ---------------- 10 Actual result: -------------- 11 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=69466&edit=1