PHP equivalent of Ruby's rescue
php, rescue, ruby, sockets, try-catch
Solution
The PHP equivalent is:
try { ... } catch (...) { ... }
If you're using PHP 5.5, there also is:
try { ... } catch (...) { ... } finally { ... }
You can have several catch clauses, each catching a different exception class.
The finally part is always run, including when an exception got raised.
Problem
don't have enough reputation to tag this properly (ruby,PHP,socket,rescue) I haven't practised my PHP in a long time, as I've been doing more Ruby scripting. I'm kind of embarrassed to ask for help with this. I know, in Ruby, that I can use rescue to prevent the script from crashing in the case of error, and I'm hoping to achieve the same thing with PHP. For example, in Ruby: ``` require 'socket' begin puts "Connecting to host..." host = TCPSocket.new("169.121.77.3", 333) # This will (intentionally) fail to connect, triggering the rescue clause. rescue puts "Something went wrong." # Script continues to run, allowing, for example, the user to correct the host IP. end ``` My PHP code is a little messy - it's been quite a long time. ``` function check_alive($address,$service_port) { /* Create a TCP/IP socket. */ $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP); if ($socket === false) { echo socket_strerror(socket_last_error()); } else { echo null; } $result = socket_connect($socket, $address, $service_port); if ($result === false) { echo socket_strerror(socket_last_error($socket)); return 1; } else { echo null; } socket_close($socket); return 0; } $hosts = [...]; // list of hosts to check foreach($hosts as $key=>$host) { check_alive($hosts); } ``` Essentially, I have an array of hosts, and I'd like to check to see if they're alive. It's not necessary for ALL hosts to be alive, so here's where I'm stuck - the first dead host in the array crashes the script. Any suggestions would be very much appreciated - I'm willing to accept that I don't fully understand socket connections in PHP.