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<?php $a = ["foo"]; function bar(&$b) { $b[] = "bar"; } array_walk( $a, "bar"); print_r( $a);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: [] operator not supported for strings in /in/dHIkZ:5 Stack trace: #0 [internal function]: bar('foo', 0) #1 /in/dHIkZ(8): array_walk(Array, 'bar') #2 {main} thrown in /in/dHIkZ on line 5
Process exited with code 255.

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