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run code in 500+ PHP versions simultaneously
<?php $arr = ['foo' => 'bar', 'foobar' => 'barfoo']; foreach ($arr as $key => $value) { $arr[$key] = strrev($value); } var_dump($arr);
Output for 7.0.17, 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array(2) { ["foo"]=> string(3) "rab" ["foobar"]=> string(6) "oofrab" }

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