3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $user_data = ['Name' => '', 'Street' => '']; $fields = [ 'field1' => 'Name', 'field2' => 'Street' ]; $fields_position = [0, 3]; $values = [ 'John', 'Doe', '555 23 58 45', 'Evergreen Terrace' ]; foreach($fields_position as $idx => $pos) { $index = $fields[$idx]; $user_data[$index] = $values[$pos]; } /* The result must be ['field1' => 'John', 'field2' => 'Evergreen Terrace']. Because in 0 position of $values is John and in 3 position is 'Evergreen Terrace' */ var_dump($user_data);
based on IckNr
Output for 5.6.0 - 5.6.30, 7.1.0 - 7.3.0beta1
Notice: Undefined offset: 0 in /in/YhT6B on line 19 Notice: Undefined offset: 1 in /in/YhT6B on line 19 array(3) { ["Name"]=> string(0) "" ["Street"]=> string(0) "" [""]=> string(17) "Evergreen Terrace" }
Output for hhvm-3.22.0
Notice: Undefined index: 0 in /in/YhT6B on line -1 Notice: Undefined index: 1 in /in/YhT6B on line -1 array(3) { ["Name"]=> string(0) "" ["Street"]=> string(0) "" [""]=> string(17) "Evergreen Terrace" }
Output for hhvm-3.18.5 - 3.21.3
Notice: Undefined index: 0 in /in/YhT6B on line 19 Notice: Undefined index: 1 in /in/YhT6B on line 19 array(3) { ["Name"]=> string(0) "" ["Street"]=> string(0) "" [""]=> string(17) "Evergreen Terrace" }