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<?php $foo = ['foo' => 'bar', 'bar', 'red']; $bar = ['foo' => 'foo', 'bar' => 'bar', 'green' => 'green']; var_dump(array_intersect_key($foo, $bar)); vardump(array_keys($foo));
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { ["foo"]=> string(3) "bar" } Fatal error: Uncaught Error: Call to undefined function vardump() in /in/af3j3:8 Stack trace: #0 {main} thrown in /in/af3j3 on line 8
Process exited with code 255.

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