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<?php $array = ['banana','apple','corn',['pear','coconut']]; echo'<pre>'; print_r(array_map(array_fill_keys($array,[]),$array)); print_r(array_fill_keys($array,[]));
Output for git.master, git.master_jit, rfc.property-hooks
<pre> Warning: Array to string conversion in /in/2sFPl on line 5 Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback or null, array callback must have exactly two members in /in/2sFPl:5 Stack trace: #0 /in/2sFPl(5): array_map(Array, Array) #1 {main} thrown in /in/2sFPl on line 5
Process exited with code 255.

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