1--TEST-- 2GH-10377 (Unable to have an anonymous readonly class) 3--FILE-- 4<?php 5 6$readonly_anon = new readonly class { 7 public int $field; 8 function __construct() { 9 $this->field = 2; 10 } 11}; 12 13$anon = new class { 14 public int $field; 15 function __construct() { 16 $this->field = 2; 17 } 18}; 19 20var_dump($readonly_anon->field); 21try { 22 $readonly_anon->field = 123; 23} catch (Error $e) { 24 echo $e->getMessage() . "\n"; 25} 26var_dump($readonly_anon->field); 27 28var_dump($anon->field); 29try { 30 $anon->field = 123; 31} catch (Error $e) { 32 echo $e->getMessage() . "\n"; 33} 34var_dump($anon->field); 35 36?> 37--EXPECT-- 38int(2) 39Cannot modify readonly property class@anonymous::$field 40int(2) 41int(2) 42int(123) 43