[BUG] PHP warnings when editing zone configuration

[imyller]

fM Version : 4.6.2 fmDNS Version : 6.0.5

Debian 12 (Bookworm) PHP 8.2.18 Apache 2.4.59

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• [X] I have checked that the bug-fix I am reporting can be replicated, or that the feature I am suggesting isn't already present.
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(BUG | ISSUE) Expected Behavior:

Zone edit works without PHP errors and warnings.

(BUG | ISSUE) Actual Behavior:

`Warning: Array to string conversion in /opt/facileManager/server/fm-modules/fmDNS/classes/class_zones.php on line 1280

Warning: Undefined property: stdClass::$domain_id in /opt/facileManager/server/fm-modules/fmDNS/classes/class_zones.php on line 1285

Warning: Undefined property: stdClass::$domain_name in /opt/facileManager/server/fm-modules/fmDNS/classes/class_zones.php on line 1286

Warning: Undefined property: stdClass::$domain_mapping in /opt/facileManager/server/fm-modules/fmDNS/classes/class_zones.php on line 1287

Warning: Undefined property: stdClass::$domain_mapping in /opt/facileManager/server/fm-modules/fmDNS/classes/class_zones.php on line 1293

Deprecated: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in /opt/facileManager/server/fm-modules/fmDNS/classes/class_zones.php on line 1294

Warning: Undefined property: stdClass::$record_count in /opt/facileManager/server/fm-modules/fmDNS/classes/class_zones.php on line 1302

Warning: Undefined property: stdClass::$domain_view in /opt/facileManager/server/fm-modules/fmDNS/classes/class_zones.php on line 1307`

Click zone 'Edit':

Results in:

(BUG | ISSUE) Steps to reproduce:

• Fresh installation
• Create server configuration
• Edit reverse zone (click 'Edit')
• Fatal PHP error is displayed

[WillyXJ]

This is now fixed in fmDNS 6.0.6 and later.

[imyller]

Fix caused regression:

Warning: Array to string conversion in /opt/facileManager/server/fm-modules/fmDNS/functions.php on line 701

in functions.php getZoneServers function:

return (string) $serial_no;