Add ws example accounts2.php

examples/accounts2.php

@@ -0,0 +1,36 @@
+<?php
+
+require('./exampleBase.php');
+use React\Async;
+use React\Promise;
+use Web3\Web3;
+
+$web3 = new Web3('ws://127.0.0.1:8545');
+
+$eth = $web3->eth;
+
+echo 'Eth Get Account and Balance' . PHP_EOL;
+$promises = [];
+$promises[] = $eth->accounts(function ($err, $accounts) use ($eth) {
+    if ($err !== null) {
+        echo 'Error: ' . $err->getMessage();
+        return;
+    }
+
+    foreach ($accounts as $account) {
+        echo 'Account: ' . $account . PHP_EOL;
+
+        $promises[] = $eth->getBalance($account, function ($err, $balance) {
+            if ($err !== null) {
+                echo 'Error: ' . $err->getMessage();
+                return;
+            }
+            echo 'Balance: ' . $balance . PHP_EOL;
+        });
+    }
+
+    // wait all promises
+    Async\await(Promise\all($promises));
+    echo 'close connection...' . PHP_EOL;
+    $eth->provider->close();
+});