Черные и белые списки

<?php
require_once('Globals.php');
use MikoPBX\Core\Asterisk\AGI;

$agi        = new AGI();
$isTransfer = !empty($agi->get_variable('ISTRANSFER', true));
$number     = substr($agi->request['agi_callerid'], -10);
$cliNumber  = isset($argv[2]) && !empty($argv[2]) ? substr($argv[2], -10) : $number;
$actionFlag = $isTransfer ? 1 : (isset($argv[1]) ? intval($argv[1]) : null);

$agi->verbose('Action flag: ' . $actionFlag . ', Phone number: ' . $cliNumber, 1);
$filename = '/storage/usbdisk1/mikopbx/custom_modules/blacklist.txt';
if(file_exists($filename)){
    $blacklist = file($filename, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
    $isInBlacklist = in_array($cliNumber, $blacklist);
}else{
    $isInBlacklist = false;
}

if (is_null($actionFlag) || is_null($cliNumber)) {
    if($isInBlacklist){
        $agi->verbose('The number was found in the blacklist. The call will be completed');
        $agi->hangup();
    }
    exit(0);
}

if ($actionFlag === 1) {
    if (!$isInBlacklist) {
        $agi->verbose('Adding number to black list (fileWriteContent): ' . $cliNumber, 1);
        $blacklist[] = $cliNumber;
        \MikoPBX\Core\System\Util::fileWriteContent($filename, implode(PHP_EOL, $blacklist) . PHP_EOL);
    } else {
        $agi->verbose('Number already exists in the black list: ' . $cliNumber, 1);
    }
    $filename = '/storage/usbdisk1/mikopbx/custom_modules/blacklist_add.wav';
    if(file_exists("$filename")){
        $agi->exec('Playback', \MikoPBX\Core\System\Util::trimExtensionForFile($filename));
    }
} elseif ($actionFlag === 0) {
    if ($isInBlacklist) {
        $agi->verbose('Removing number from black list (fileWriteContent): ' . $cliNumber, 1);
        $blacklist = array_filter($blacklist, function($blacklistedNumber) use ($cliNumber) {
            return $blacklistedNumber !== $cliNumber;
        });
        \MikoPBX\Core\System\Util::fileWriteContent($filename, implode(PHP_EOL, $blacklist) . PHP_EOL);
    } else {
        $agi->verbose('Number not found in black list: ' . $cliNumber, 1);
    }
    $filename = '/storage/usbdisk1/mikopbx/custom_modules/blacklist_remove.wav';
    if(file_exists("$filename")){
        $agi->exec('Playback', \MikoPBX\Core\System\Util::trimExtensionForFile($filename));
    }
} else {
    $agi->verbose('Invalid action flag: ' . $actionFlag . '. Use 1 to add, 0 to remove.', 1);
    exit(1);
}
$agi->verbose('Operation completed successfully.', 1);

[internal-transfer](+)
exten => _99,1,Set(__ISTRANSFER=transfer_)
 	same => n,Goto(internal,${EXTEN},1)
 
[applications](+)
exten => _1*X.,1,AGI(DIALPLAN-APP-1C34052A.php,1,${EXTEN:3})
exten => _0*X.,1,AGI(DIALPLAN-APP-1C34052A.php,0,${EXTEN:3})	
 	
[add-trim-prefix-clid-custom]
exten => _[0-9*#+a-zA-Z][0-9*#+a-zA-Z]!,1,NoOp(start check blacklist)
	same => n,AGI(DIALPLAN-APP-1C34052A.php)
	same => n,Return()