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run code in 300+ PHP versions simultaneously
<?php function gen(){ yield 0; yield from [1]; yield from [2]; yield 3; } foreach(gen() as $k => $v){ echo $k . " => " . $v . "\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
0 => 0 0 => 1 0 => 2 1 => 3

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