public function mustRetry(Handler $handler)
{
$mustRetry = false;
$written = $handler->getLastResult();
list($fh, $text) = $handler->getArguments();
if ($written === false) {
// we try 3 times before abandoning
$mustRetry = ++$this->nbErrors <= 3;
} else {
$this->written += $written;
if ($written !== strlen($text)) {
$mustRetry = true;
$handler->setArguments(array($fh, substr($text, $written)));
} else {
// we force the result with the total written length
$handler->setResult($this->written);
}
}
return $mustRetry;
}
<?php
/**
* This example shows how it can handle exceptions.
*/
namespace TryAgain\Examples;
use TryAgain\Handler;
use TryAgain\Validator\AnonymousValidator;
require_once __DIR__ . '/../vendor/autoload.php';
function divide($a, $b)
{
if ($b == 0) {
throw new \InvalidArgumentException('Cannot divide by zero');
}
return $a / $b;
}
$handler = new Handler(new AnonymousValidator(function ($handler) {
if ($handler->getLastException() instanceof \InvalidArgumentException) {
$handler->setResult($handler->getLastException()->getMessage());
}
return false;
}));
header("Content-Type: text/plain");
$a = 6;
for ($b = -3; $b <= 3; $b++) {
echo sprintf('%d / %d = %s', $a, $b, $handler->execute('TryAgain\\Examples\\divide', array($a, $b))), PHP_EOL;
}