3v4l.org

run code in 300+ PHP versions simultaneously
<?php (new \AppendIterator())->append( new \CallbackFilterIterator( new \ArrayIterator([1]), static function(){ echo "Iterated over"; } ) );
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.26, 8.0.0 - 8.0.13, 8.1rc1 - rc3
Iterated over
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/dc9eq on line 3
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/dc9eq on line 3 Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/dc9eq on line 3
Process exited with code 255.
Output for 4.3.0 - 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/dc9eq on line 3 Parse error: parse error, unexpected T_OBJECT_OPERATOR in /in/dc9eq on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/dc9eq on line 3 Parse error: parse error in /in/dc9eq on line 3
Process exited with code 255.

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