- implode: documentation ( source)
- array_keys: documentation ( source)
<?php
$implicitConfig = [
'READ_OWN' => [
'READ',
'WRITE_OWN',
'WRITE',
'MANAGE_OWN',
'MANAGE'
],
'READ' => [
'WRITE',
'MANAGE'
],
'WRITE_OWN' => [
'WRITE',
'MANAGE_OWN',
'MANAGE'
],
'WRITE' => [
'MANAGE'
],
'MANAGE_OWN' => [
'MANAGE'
],
'MANAGE' => []
];
echo implode('|', array_keys($implicitConfig));