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run code in 300+ PHP versions simultaneously
<?php $it = new \AppendIterator(); $it->append(new ArrayIterator(['foo'])); foreach ($it as $item) { echo $item; if ('foo' === $item) { $it->append(new ArrayIterator(['bar'])); } }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.21, 7.0.24 - 7.0.33, 7.1.0 - 7.1.7, 7.1.10 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 8.0.0 - 8.0.12, 8.1rc1 - rc3
foobar
Output for 7.0.22 - 7.0.23, 7.1.8 - 7.1.9
foo
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/itLi1 on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/itLi1 on line 3 Parse error: syntax error, unexpected '[', expecting ')' in /in/itLi1 on line 4
Process exited with code 255.
Output for 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/itLi1 on line 3 Parse error: parse error, unexpected '[', expecting ')' in /in/itLi1 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/itLi1 on line 3 Parse error: parse error, expecting `')'' in /in/itLi1 on line 4
Process exited with code 255.

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