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<?php $a = [ 10 , 0x30 ]; $b = ['10', '0x30']; echo json_encode(array_intersect($a, $b)); echo "\n\n"; $a = ["foo" => 1, 2]; $b = [1, "bar" => 2]; var_dump(array_intersect($a, $b)); echo "\n\n"; $a = [[1], [2]]; $b = [[3], [4]]; echo json_encode(array_intersect($a, $b)); echo "\n\n"; $a = [null]; $b = ['']; echo json_encode(array_intersect($a, $b)); echo "\n\n";
Output for git.master, git.master_jit, rfc.property-hooks
[10] array(2) { ["foo"]=> int(1) [0]=> int(2) } Warning: Array to string conversion in /in/RSpF9 on line 18 Warning: Array to string conversion in /in/RSpF9 on line 18 Warning: Array to string conversion in /in/RSpF9 on line 18 Warning: Array to string conversion in /in/RSpF9 on line 18 Warning: Array to string conversion in /in/RSpF9 on line 18 Warning: Array to string conversion in /in/RSpF9 on line 18 Warning: Array to string conversion in /in/RSpF9 on line 18 Warning: Array to string conversion in /in/RSpF9 on line 18 [[1],[2]] [null]

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