3v4l.org

run code in 300+ PHP versions simultaneously
<?hh $a = [1, 2]; $b = new IteratorIterator($a); foreach ($b as $key => $value) { var_dump($key, $value); }
Output for 5.4.0 - 5.4.32, 7.2.29 - 7.2.33, 7.3.16 - 7.3.31, 7.4.3 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
<?hh $a = [1, 2]; $b = new IteratorIterator($a); foreach ($b as $key => $value) { var_dump($key, $value); }
Output for 8.0.13
Parse error: syntax error, unexpected variable "$a" in /in/8bST5 on line 3
Process exited with code 255.
Output for 7.3.32 - 7.3.33, 7.4.33
Parse error: syntax error, unexpected '$a' (T_VARIABLE) in /in/8bST5 on line 3
Process exited with code 255.
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