Language: foreach(enum case) yields name/value props (#23433)

[PurHur]

Summary

• Closes Language: foreach(enum case) omits name/value props — Zend yields name (+ value if backed) (Zend/zend_enum.c) #23433 — foreach on enum case objects now yields Zend's name (+ value for backed) pseudo-properties via the same EnumCaseSupport::objectVarsForCaseVariable path as get_object_vars.
• php-src ref: Zend/zend_enum.c / property iteration handlers.
• No new C.

Test plan

• Issue repro (Zend + VM + JIT):

./script/docker-exec.sh -- bash -lc 'cat >/tmp/repro_enum_foreach.php <<'"'"'PHP'"'"'
<?php
enum E { case A; }
$ks = [];
foreach (E::A as $k => $v) { $ks[] = "$k=" . var_export($v, true); }
echo implode(",", $ks), "\n";
enum S: string { case A = "x"; }
$ks = [];
foreach (S::A as $k => $v) { $ks[] = "$k=" . var_export($v, true); }
echo implode(",", $ks), "\n";
PHP
php /tmp/repro_enum_foreach.php
php bin/vm.php /tmp/repro_enum_foreach.php
php bin/jit.php /tmp/repro_enum_foreach.php'

Output (all three):

name='A'
name='A',value='x'

• vendor/bin/phpunit --filter foreach_enum_case_properties test/compliance/EnumVMTest.php → OK
• Related: foreach_enum_case_*, foreach_object_property_visibility, get_object_vars_enum_case* → OK (16 tests)

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