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run code in 300+ PHP versions simultaneously
<?php $a = []; $b = [['id'=>'foo'],['id'=>'bar']]; $c = [['id'=>'biz'],['id'=>'baz']]; $result = [['id'=>'foo'],['id'=>'bar'],['id'=>'biz'],['id'=>'baz']]; $d = array_merge($a,$b,$c); var_dump($d === $result, $d);

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