Stdlib: array_column() reads private props via __get — Zend returns empty (ext/standard/array.c) #23511

Category

stdlib · php-src-strict

Problem

For object rows, php-src array_column() reads declared visible properties only — it does not invoke __get. When the column is a private property exposed only through __get, Zend returns an empty array; the VM currently invokes magic and returns values.

Public constructor-promoted properties already match Zend.

php-src reference

• php/php-src ext/standard/array.c — php_array_column / object property fetch without magic __get

PHP implementation target

• ext/standard/ArrayColumnJitHelper.php / lib/JIT/Builtin/ArrayColumnRuntime.php — object column fetch must use non-magic property presence (declared props / property_exists semantics matching Zend), not __get
• ext/standard/array_column.php — keep VM entry on the same helper
• No new C in runtime/

Repro

./script/docker-exec.sh -- bash -lc 'cat >/tmp/acol.php <<'"'"'PHP'"'"'
<?php
class R {
  private $name;
  public function __construct(string $n) { $this->name = $n; }
  public function __get(string $k): string { return $this->name; }
}
echo json_encode(array_column([new R("x"), new R("y")], "name")), "\n";
PHP
env -u PHP_COMPILER_PROFILE php /tmp/acol.php
env -u PHP_COMPILER_PROFILE php bin/vm.php /tmp/acol.php'

Done when

• VM/JIT match Zend ([]) for private-column + __get rows
• Public/promoted object properties still extract as today
• Compliance .phpt under test/compliance/cases/stdlib/
• php-src-strict; no php-compiler-strict shortcut