Niksss_777

$prms = array(
        "id" => $idLead,
        "fields" => array(
        "UF_CRM_1622919648" => 1,
    ),
);

$prms = json_encode( $prms );
$result = bx24( $prms, 'crm.lead.update' );

function bx24( $params, $type, $portal = '*', $admin_id = '*', $secret_code = '*' ) {

$queryUrl = 'https://' . $portal . '.bitrix24.ru/rest/' . $admin_id . '/' . $secret_code . '/' . $type;
$params = json_decode( $params, true );

$queryData = http_build_query(
    $params
);

$curl = curl_init();

curl_setopt_array( $curl, array(
    CURLOPT_SSL_VERIFYPEER => 0,
    CURLOPT_POST           => 1,
    CURLOPT_HEADER         => 0,
    CURLOPT_RETURNTRANSFER => 1,
    CURLOPT_URL            => $queryUrl,
    CURLOPT_POSTFIELDS     => $queryData,
) );

$result = curl_exec( $curl );

curl_close( $curl );
}

$$a = 'Значение'; 
${$a.$b} = 'Значение';