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<?php $a = [ 'foo' => null, ]; $b = [ 'foo' => 'str', ]; $c = [ 'foo' => [1, 3], ]; echo "1:\n"; var_dump(array_intersect($a, $b)); echo "\n2:\n"; var_dump(array_intersect($b, $c));
Output for git.master, git.master_jit, rfc.property-hooks
1: array(0) { } 2: Warning: Array to string conversion in /in/TYrqn on line 16 array(0) { }

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