3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
$keyword_1 = "keyword1"; $keyword_2 = "keyword2"; $keyword_2 = "keyword3"; $keyword_4 = "keyword4"; $keyword_5 = "keyword5"; $keyword_6 = "keyword6"; $keyword_7 = "keyword7"; $city_1 = "city1"; $city_2 = "city2"; $city_3 = "city3"; $city_4 = "city4"; $city_5 = "city5"; $city_6 = "city6"; $city_7 = "city7"; <?php function permutation(array $arr) { while($ele=array_shift($arr)) { $x=$ele; echo $x."\n"; foreach($arr as $rest) { $x.=" $rest"; echo $x."\n"; } } } permutation(array("one","two","three","four"));
based on 08vXt
Output for 5.1.0 - 7.2.0
$keyword_1 = "keyword1"; $keyword_2 = "keyword2"; $keyword_2 = "keyword3"; $keyword_4 = "keyword4"; $keyword_5 = "keyword5"; $keyword_6 = "keyword6"; $keyword_7 = "keyword7"; $city_1 = "city1"; $city_2 = "city2"; $city_3 = "city3"; $city_4 = "city4"; $city_5 = "city5"; $city_6 = "city6"; $city_7 = "city7"; one one two one two three one two three four two two three two three four three three four four
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/a1fce on line 18
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/a1fce on line 18
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_ARRAY, expecting ')' in /in/a1fce on line 18
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/a1fce on line 18
Process exited with code 255.