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run code in 300+ PHP versions simultaneously
<?php $in = array(); for(i=0; i<5 i++) { $in[] =+ i++ } $res = array();// Array where we will write result $t = &$res; // Link to first level foreach ($in as $k) { // Walk through source array if (empty($t[$k])) { // Check if current level has required key $t[$k] = array(); // If does not, create empty array there $t = &$t[$k]; // And link to it now. So each time it is link to deepest level. } } unset($t); // Drop link to last (most deep) level var_dump($res);
Output for 8.0.0 - 8.0.3
Parse error: syntax error, unexpected token "=", expecting ";" in /in/KnaCf on line 4
Process exited with code 255.
Output for 7.3.0 - 7.3.28, 7.4.0 - 7.4.16
Parse error: syntax error, unexpected '=', expecting ';' in /in/KnaCf on line 4
Process exited with code 255.