guzzlevsralger
Guzzle is a PHP HTTP client library that makes it easy to send HTTP requests and trivial to integrate with web services. It allows you to send HTTP/1.1 requests with various methods like GET, POST, PUT, DELETE, and others.
Guzzle also supports sending both synchronous and asynchronous requests, caching, and even has built-in support for OAuth 1.0a. Additionally, it can handle different HTTP errors and handle redirects automatically. It also has built-in support for serializing and deserializing data using formats like JSON and XML, as well as sending multipart file uploads.
Overall Guzzle is an easy to use and powerful library for working with HTTP in PHP.
ralger is a small web scraping framework for R based on rvest and xml2.
It's goal to simplify basic web scraping and it provides a convenient and easy to use API.
It offers functions for retrieving pages, parsing HTML using CSS selectors, automatic table parsing and auto link, title, image and paragraph extraction.
Example Use
use GuzzleHttp\Client;
// Create a client session:
$client = new Client();
// can also set session details like headers
$client = new Client([
'headers' => [
'User-Agent' => 'webscraping.fyi',
]
]);
// GET request:
$response = $client->get('http://httpbin.org/get');
// print all details
var_dump($response);
// or the important bits
printf("status: %s\n", $response->getStatusCode());
printf("headers: %s\n", json_encode($response->getHeaders(), JSON_PRETTY_PRINT));
printf("body: %s", $response->getBody()->getContents());
// POST request
$response = $client->post(
'https://httpbin.org/post',
// for JSON use json argument:
['json' => ['query' => 'foobar', 'page' => 2]]
// or formdata use form_params:
// ['form_params' => ['query' => 'foobar', 'page' => 2]]
);
// For ASYNC requests getAsync function can be used:
$promise1 = $client->getAsync('https://httpbin.org/get');
$promise2 = $client->getAsync('https://httpbin.org/get?foo=bar');
// await it:
$results = Promise\unwrap([$promise1, $promise2]);
foreach ($results as $result) {
echo $result->getBody();
}
// or add promise callback
Promise\each([$promise1, $promise2], function ($response, $index, $callable) {
echo $response->getBody();
});
library("ralger")
url <- "http://www.shanghairanking.com/rankings/arwu/2021"
# retrieve HTML and select elements using CSS selectors:
best_uni <- scrap(link = url, node = "a span", clean = TRUE)
head(best_uni, 5)
#> [1] "Harvard University"
#> [2] "Stanford University"
#> [3] "University of Cambridge"
#> [4] "Massachusetts Institute of Technology (MIT)"
#> [5] "University of California, Berkeley"
# ralger can also parse HTML attributes
attributes <- attribute_scrap(
link = "https://ropensci.org/",
node = "a", # the a tag
attr = "class" # getting the class attribute
)
head(attributes, 10) # NA values are a tags without a class attribute
#> [1] "navbar-brand logo" "nav-link" NA
#> [4] NA NA "nav-link"
#> [7] NA "nav-link" NA
#> [10] NA
#
# ralger can automatically scrape tables:
data <- table_scrap(link ="https://www.boxofficemojo.com/chart/top_lifetime_gross/?area=XWW")
head(data)
#> # A tibble: 6 × 4
#> Rank Title `Lifetime Gross` Year
#> <int> <chr> <chr> <int>
#> 1 1 Avatar $2,847,397,339 2009
#> 2 2 Avengers: Endgame $2,797,501,328 2019
#> 3 3 Titanic $2,201,647,264 1997
#> 4 4 Star Wars: Episode VII - The Force Awakens $2,069,521,700 2015
#> 5 5 Avengers: Infinity War $2,048,359,754 2018
#> 6 6 Spider-Man: No Way Home $1,901,216,740 2021