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<?php $in = array(); for($i = 1; $i <=5; $i++) { $in[] = ['category_id','title']; } $res = array();// Array where we will write result $t = &$res; // Link to first level foreach ($in as $k['category_id']) { // Walk through source array if (empty($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 8.3.0 - 8.3.4
Fatal error: Uncaught TypeError: Cannot access offset of type array in isset or empty in /in/biZmO:11 Stack trace: #0 {main} thrown in /in/biZmO on line 11
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17
Fatal error: Uncaught TypeError: Illegal offset type in isset or empty in /in/biZmO:11 Stack trace: #0 {main} thrown in /in/biZmO on line 11
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Illegal offset type in isset or empty in /in/biZmO on line 11 Warning: Illegal offset type in /in/biZmO on line 12 Warning: Illegal offset type in /in/biZmO on line 13 Warning: Illegal offset type in isset or empty in /in/biZmO on line 11 Warning: Illegal offset type in /in/biZmO on line 12 Warning: Illegal offset type in /in/biZmO on line 13 Warning: Illegal offset type in isset or empty in /in/biZmO on line 11 Warning: Illegal offset type in /in/biZmO on line 12 Warning: Illegal offset type in /in/biZmO on line 13 Warning: Illegal offset type in isset or empty in /in/biZmO on line 11 Warning: Illegal offset type in /in/biZmO on line 12 Warning: Illegal offset type in /in/biZmO on line 13 Warning: Illegal offset type in isset or empty in /in/biZmO on line 11 Warning: Illegal offset type in /in/biZmO on line 12 Warning: Illegal offset type in /in/biZmO on line 13 array(0) { }

preferences:
133.6 ms | 403 KiB | 150 Q