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<?php $a = 'foo bar baz'; $b = 'a'; var_dump( $$b[0] ); ${$b}[0] = ''; var_dump( $$b[0] );
Output for git.master, git.master_jit, rfc.property-hooks
string(1) "f" Fatal error: Uncaught Error: Cannot assign an empty string to a string offset in /in/XhWnm:5 Stack trace: #0 {main} thrown in /in/XhWnm on line 5
Process exited with code 255.

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