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@ 2013-11-08T08:34:03Z

<?php
function isAlive($services) {
  foreach ($services as $address => $port) {
  
    $service = array(
      "address" => $address,
      "port" => $port,
      "errno" => "",
      "errstr" => "",
      "alive" => false
    );
    
    $sock = @fsockopen($address, $port, $service["errno"], $service["errstr"], 5);
    if ($sock) {
      fprintf($sock, "GET / HTTP/1.0\r\n");
      fprintf($sock, "\r\n");
      $service["response"] = stream_get_contents($sock);
      if ($service["response"]) {
        $service["alive"] = true;
      }
      fclose($sock);
    }
    yield $service;
  }
}

$services = array(
  "php.net" => 80,
  "explain.so" => 80,
  "do1asdasdas.net" => 80
);

foreach (isAlive($services) as $service) {
  if (!$service["alive"]) {
    printf(
      "%s:%d: failure (%d) %s\n", 
        $service["address"], $service["port"], $service["errno"], $service["errstr"]);
  } else {
    printf(
      "%s:%d: alive: %d bytes\n", 
        $service["address"], $service["port"], strlen($service["response"]));
  }
}
?>

Output for git.master, git.master_jit, rfc.property-hooks: php.net:80: failure (0) php_network_getaddresses: getaddrinfo for php.net failed: System error explain.so:80: failure (0) php_network_getaddresses: getaddrinfo for explain.so failed: System error do1asdasdas.net:80: failure (0) php_network_getaddresses: getaddrinfo for do1asdasdas.net failed: System error

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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