3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $array = array( 41 => Array ( 'name' => 'London ', 'company' => 'nhyt6t', 'top25_1' => 8.75912088 ), 42 => Array ( 'name' => 'Manchester', 'company' => 'gtr4rf', 'top25_1' => 6.56758398 ), 43 => Array ( 'name' => 'Leeds', 'company' => 'de3wsd6', 'top25_1' => 7.58675398 ), 44 => Array ( 'name' => '--- ', 'company' => 'nhyt6t', 'top25_2' => 1 ), 45 => Array ( 'name' => '---', 'company' => 'gtr4rf', 'top25_2' => 1 ), 46 => Array ( 'name' => '??', 'company' => 'de3wsd6', 'top25_3' => 7.58675398 ) ); $result = array_reduce(array_keys($array), function($c, $x) use ($array) { if(!isset($c[$key = end(array_keys($array[$x]))])) { $c[$key] = ['start'=>$x, 'end'=>$x]; } else { $c[$key]['end'] = $x; }; return $c; }, array());
Output for 7.0.0 - 7.1.0
Notice: Only variables should be passed by reference in /in/JkdFu on line 37 Notice: Only variables should be passed by reference in /in/JkdFu on line 37 Notice: Only variables should be passed by reference in /in/JkdFu on line 37 Notice: Only variables should be passed by reference in /in/JkdFu on line 37 Notice: Only variables should be passed by reference in /in/JkdFu on line 37 Notice: Only variables should be passed by reference in /in/JkdFu on line 37
Output for 5.4.0 - 5.6.28
Strict Standards: Only variables should be passed by reference in /in/JkdFu on line 37 Strict Standards: Only variables should be passed by reference in /in/JkdFu on line 37 Strict Standards: Only variables should be passed by reference in /in/JkdFu on line 37 Strict Standards: Only variables should be passed by reference in /in/JkdFu on line 37 Strict Standards: Only variables should be passed by reference in /in/JkdFu on line 37 Strict Standards: Only variables should be passed by reference in /in/JkdFu on line 37
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/JkdFu on line 39
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/JkdFu on line 35
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/JkdFu on line 35
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/JkdFu on line 35
Process exited with code 255.