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<?php $a = array(); $arrayKey = '[0][1]'; $a[0][1] = "two levels deep"; echo eval($a.$arrayKey);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Array to string conversion in /in/5u7Cj on line 8 Parse error: syntax error, unexpected token "[", expecting "(" in /in/5u7Cj(8) : eval()'d code on line 1
Process exited with code 255.

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