szyku

<?php
$handler = @fopen(join(DIRECTORY_SEPARATOR, [__DIR__, 'credit_cards.txt']), "r");

if ($handler) {
    return CreditCardNumberExtractor::createFromHandler($handler);
}
/* ... */

szyku

<?php 
$operation = File::openForRead(join(DIRECTORY_SEPARATOR, [__DIR__, 'credit_cards.txt']));

if ($operation->isSuccessful) {
    return CreditCardNumberExtractor::createFromHandler($operation->payload);
}
/* ... */

szyku

<?php
final class ResultObject
{
    public $isSuccessful;
    public $payload = null;

    private function __construct(bool $isSuccessful, $payload = null)
    {
        $this->isSuccessful = $isSuccessful;
        $this->payload = $payload;

szyku

<?php

if ($response->getStatusCode() >= 400) {
    $code = $this->extractErrorCode($response->getBody());

    switch ($code) {
        case FailReasons::NO_TAGS:
            $msg = 'The document has not enough signature tags';
            break;
        //...

szyku

<?php
//....
$action = DocumentSigningAction::create($doc);

/** @var \Psr\Http\Message\ResponseInterface $response */
$response = $action->execute();

if ($response->getStatusCode() >= 500) {
    throw new SigningServiceUnavailable();
}

szyku

<?php

try {
    $loanSchedule = $calculator->calculate($loanDeptorRequest);
} catch (CalculatorException $e) {
    // log the event or sth else
}

szyku

<?php
class XYZ {
    // ...
    public static function openForRead(string $id): ?SplFileObject
    {
        $fileInfo = new SplFileInfo($id);
        try {
            return $fileInfo->openFile('r');
        } catch (\Exception $e) {
            return null;

szyku

<?php
class XYZ {
    // ...
    public static function openForRead(string $id): ?resouce
    {
        $resource = @fopen($id, 'r');
        return $resource ? $resource : null;
    }
}

szyku

<?php
class XYZ {
    // ...
    public function openForRead($id)
    {
        return @fopen($id, 'r');
    }
}

szyku

public class Person {
    String name;
    String lastName;
    int age;
}