adds logging example

Author: bshaffer

appengine/standard/logging/README.md

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+# Logging for App Engine (standard)
+
+This app demonstrates how to read App Engine logs. Full instructions at [https://cloud.google.com/appengine/docs/php/logs/](https://cloud.google.com/appengine/docs/php/logs/)

appengine/standard/logging/app.yaml

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+runtime: php55
+threadsafe: yes
+api_version: 1
+
+handlers:
+- url: .*
+  script: index.php

appengine/standard/logging/composer.json

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+{
+    "require": {
+        "google/appengine-php-sdk": "^1.9"
+    }
+}

appengine/standard/logging/composer.lock

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+
+
+require __DIR__ . '/vendor/autoload.php';
+
+# [START fetch_logs]
+use google\appengine\api\log\LogService;
+
+// LogService API usage sample to display application logs for last 24 hours.
+$options = [
+  // Fetch last 24 hours of log data
+  'start_time' => (time() - (24 * 60 * 60)) * 1e6,
+  // End time is Now
+  'end_time' => time() * 1e6,
+  // Include all Application Logs (i.e. your debugging output)
+  'include_app_logs' => true,
+  // Filter out log records based on severity
+  'minimum_log_level' => LogService::LEVEL_INFO,
+];
+
+$logs = LogService::fetch($options);
+# [END fetch_logs]
+?>
+
+ if (empty($logs)): ?>
+  No logs!
+ endif ?>
+
+
+ foreach ($logs as $log): ?>
+  REQUEST LOG
+  
+    IP:  $log->getIp() ?>
+    Status:  $log->getStatus() ?>
+    Method:  $log->getMethod() ?>
+    Resource:  $log->getResource() ?>
+    Date:  $log->getEndDateTime()->format('c') ?>
+    
+ foreach ($log->getAppLogs() as $app_log): ?>
+        APP LOG
+        
+          Message:  $app_log->getMessage() ?>
+          Date:  $app_log->getDateTime()->format('c') ?>
+        
+ endforeach ?>
+    
+  
+ endforeach ?>
+