1--TEST-- 2Exceptions on improper usage of $this 3--FILE-- 4<?php 5abstract class C { 6 abstract static function foo(); 7} 8 9function foo(callable $x) { 10} 11 12try { 13 C::foo(); 14} catch (Error $e) { 15 echo "\nException: " . $e->getMessage() . " in " , $e->getFile() . " on line " . $e->getLine() . "\n"; 16} 17 18try { 19 foo("C::foo"); 20} catch (Error $e) { 21 echo "\n"; 22 do { 23 echo "Exception: " . $e->getMessage() . "\n"; 24 $e = $e->getPrevious(); 25 } while ($e instanceof Error); 26} 27 28C::foo(); 29?> 30--EXPECTF-- 31Exception: Cannot call abstract method C::foo() in %sexception_017.php on line %d 32 33Exception: Argument 1 passed to foo() must be callable, string given, called in %s on line %d 34 35Fatal error: Uncaught Error: Cannot call abstract method C::foo() in %sexception_017.php:%d 36Stack trace: 37#0 {main} 38 thrown in %sexception_017.php on line %d 39