streams/Code/Lib/IConfig.php

<?php

namespace Code\Lib;

class IConfig
{

    /** @noinspection PhpUnusedParameterInspection */
    public static function Load(&$item)
    {
        return;
    }

    public static function Get(&$item, $family, $key, $default = false)
    {
        $is_item = false;

        if (is_array($item)) {
            $is_item = true;

            if ((! array_key_exists('iconfig', $item)) || (! is_array($item['iconfig']))) {
                $item['iconfig'] = [];
            }

            if (array_key_exists('item_id', $item)) {
                $iid = $item['item_id'];
            } else {
                $iid = ((isset($item['id'])) ? $item['id'] : 0);
            }

            if (array_key_exists('iconfig', $item) && is_array($item['iconfig'])) {
                foreach ($item['iconfig'] as $c) {
                    if ($c['cat'] == $family && $c['k'] == $key) {
                        return $c['v'];
                    }
                }
            }
        } elseif (intval($item)) {
            $iid = $item;
        }

        if (! $iid) {
            return $default;
        }

        $r = q(
            "select * from iconfig where iid = %d and cat = '%s' and k = '%s' limit 1",
            intval($iid),
            dbesc($family),
            dbesc($key)
        );
        if ($r) {
            $r[0]['v'] = unserialise($r[0]['v']);
            if ($is_item) {
                $item['iconfig'][] = $r[0];
            }
            return $r[0]['v'];
        }
        return $default;
    }

    /**
     * IConfig::Set(&$item, $family, $key, $value, $sharing = false);
     *
     * $item - item array or item id. If passed an array the iconfig meta information is
     *    added to the item structure (which will need to be saved with item_store eventually).
     *    If passed an id, the DB is updated, but may not be federated and/or cloned.
     * $family - namespace of meta variable
     * $key - key of meta variable
     * $value - value of meta variable
     * $sharing - boolean (default false); if true the meta information is propagated with the item
     *   to other sites/channels, mostly useful when $item is an array and has not yet been stored/delivered.
     *   If the meta information is added after delivery and you wish it to be shared, it may be necessary to
     *   alter the item edited timestamp and invoke the delivery process on the updated item. The edited
     *   timestamp needs to be altered in order to trigger an item_store_update() at the receiving end.
     */


    public static function Set(&$item, $family, $key, $value, $sharing = false)
    {
        $dbvalue = ((is_array($value))  ? serialise($value) : $value);
        $dbvalue = ((is_bool($dbvalue)) ? intval($dbvalue)  : $dbvalue);

        $idx = null;

        if (is_array($item)) {
            if ((! array_key_exists('iconfig', $item)) || (! is_array($item['iconfig']))) {
                $item['iconfig'] = [];
            } elseif ($item['iconfig']) {
                for ($x = 0; $x < count($item['iconfig']); $x++) {
                    if ($item['iconfig'][$x]['cat'] == $family && $item['iconfig'][$x]['k'] == $key) {
                        $idx = $x;
                    }
                }
            }
            $entry = ['cat' => $family, 'k' => $key, 'v' => $value, 'sharing' => $sharing];

            if (is_null($idx)) {
                $item['iconfig'][] = $entry;
            } else {
                $item['iconfig'][$idx] = $entry;
            }
            return $value;
        }

        if (intval($item)) {
            $iid = intval($item);
        }

        if (! $iid) {
            return false;
        }

        if (self::Get($item, $family, $key) === false) {
            $r = q(
                "insert into iconfig( iid, cat, k, v, sharing ) values ( %d, '%s', '%s', '%s', %d ) ",
                intval($iid),
                dbesc($family),
                dbesc($key),
                dbesc($dbvalue),
                intval($sharing)
            );
        } else {
            $r = q(
                "update iconfig set v = '%s', sharing = %d where iid = %d and cat = '%s' and  k = '%s' ",
                dbesc($dbvalue),
                intval($sharing),
                intval($iid),
                dbesc($family),
                dbesc($key)
            );
        }

        if (! $r) {
            return false;
        }

        return $value;
    }



    public static function Delete(&$item, $family, $key)
    {
        if (is_array($item)) {
            if (is_array($item['iconfig'])) {
                for ($x = 0; $x < count($item['iconfig']); $x++) {
                    if ($item['iconfig'][$x]['cat'] == $family && $item['iconfig'][$x]['k'] == $key) {
                        unset($item['iconfig'][$x]);
                    }
                }
                // re-order the array index
                $item['iconfig'] = array_values($item['iconfig']);
            }
            return true;
        }

        if (intval($item)) {
            $iid = intval($item);
        }

        if (! $iid) {
            return false;
        }

        return q(
            "delete from iconfig where iid = %d and cat = '%s' and  k = '%s' ",
            intval($iid),
            dbesc($family),
            dbesc($key)
        );
    }
}