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<?php function foo($b) { return "Hi $b"; } $bar = 'bario'; $myfoo = foo; // my 'version' echo "<br>2 {$myfoo($bar)}";
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Fatal error: Uncaught Error: Undefined constant "foo" in /in/gIIEX:9 Stack trace: #0 {main} thrown in /in/gIIEX on line 9
Process exited with code 255.

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