dwsupplee

<?php
$s1 = microtime(true);

for ($i = 0; $i < 20; $i++) {
    exec('php gapic.php');
}

print microtime(true) - $s1 . PHP_EOL;

$s2 = microtime(true);

dwsupplee

{
  "version": "v1beta2",
  "baseUrl": "https://language.googleapis.com/",
  "servicePath": "",
  "description": "Provides natural language understanding technologies to developers. Examples include sentiment analysis, entity recognition, entity sentiment analysis, and text annotations.",
  "kind": "discovery#restDescription",
  "basePath": "",
  "id": "language:v1beta2",
  "revision": "20170525",
  "documentationLink": "https://cloud.google.com/natural-language/",

dwsupplee

{
  "kind": "discovery#restDescription",
  "etag": "\"C5oy1hgQsABtYOYIOXWcR3BgYqU/6s__cFeA5l1i01rONlu3TmUQEHs\"",
  "discoveryVersion": "v1",
  "id": "translate:v2",
  "name": "translate",
  "version": "v2",
  "revision": "20160627",
  "title": "Translate API",
  "description": "Translates text from one language to another.",