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run code in 200+ php & hhvm versions
Bugs & Features
<?php $arr = ["a", "b", "c", "d", "e", "f"]; foreach($arr as $k => $v) $arr[$k] = ["current" => $v, "next" => ""]; foreach($arr as $k => $v) { if(isset($arr[$k+1])) $arr[$k]["next"] = &$arr[$k+1]["current"]; else $arr[$k]["next"] = ""; } print_r($arr); $arr[1]["current"] = "c"; print_r($arr);
based on a0rtA
Output for 5.4.0 - 7.2.0
Array ( [0] => Array ( [current] => a [next] => b ) [1] => Array ( [current] => b [next] => c ) [2] => Array ( [current] => c [next] => d ) [3] => Array ( [current] => d [next] => e ) [4] => Array ( [current] => e [next] => f ) [5] => Array ( [current] => f [next] => ) ) Array ( [0] => Array ( [current] => a [next] => c ) [1] => Array ( [current] => c [next] => c ) [2] => Array ( [current] => c [next] => d ) [3] => Array ( [current] => d [next] => e ) [4] => Array ( [current] => e [next] => f ) [5] => Array ( [current] => f [next] => ) )
Output for 5.3.19 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/oba8T on line 3
Process exited with code 255.