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How can one check to see if a remote file exists using PHP?
...TP HEAD method via CURLOPT_NOBODY.
More or less
$ch = curl_init("http://www.example.com/favicon.ico");
curl_setopt($ch, CURLOPT_NOBODY, true);
curl_exec($ch);
$retcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
// $retcode >= 400 -> not found, $retcode = 200, found.
curl_close($ch);
Anyway...
Sticky and NON-Sticky sessions
...are 3 web servers A, B and C behind the load balancer, it is possible that www.mywebsite.com/index.jsp is served from server A, www.mywebsite.com/login.jsp is served from server B and www.mywebsite.com/accoutdetails.php are served from server C.
Now, if the requests are being served from (physicall...
Downloading a picture via urllib and python
...thon 2
Using urllib.urlretrieve
import urllib
urllib.urlretrieve("http://www.gunnerkrigg.com//comics/00000001.jpg", "00000001.jpg")
Python 3
Using urllib.request.urlretrieve (part of Python 3's legacy interface, works exactly the same)
import urllib.request
urllib.request.urlretrieve("http://w...
Global variables in Javascript across multiple files
...
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<script type="text/javascript" src="external.js"></script>
<title>E...
How to set the authorization header using curl
... a user and password for authentication:
curl --user name:password http://www.example.com
The site might require a different authentication method (check the headers
returned by the server), and then --ntlm, --digest, --negotiate or even
--anyauth might be options that suit you.
So...
URLs: Dash vs. Underscore [closed]
...er Central
Consider using punctuation in your
URLs. The URL
http://www.example.com/green-dress.html
is much more useful to us than
http://www.example.com/greendress.html.
We recommend that you use hyphens (-)
instead of underscores (_) in your
URLs.
...
Parallelize Bash script with maximum number of processes
...
With GNU Parallel http://www.gnu.org/software/parallel/ you can write:
some-command | parallel do-something
GNU Parallel also supports running jobs on remote computers. This will run one per CPU core on the remote computers - even if they have dif...
How can I get Express to output nicely formatted HTML?
...
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html><head><title>My Title</title><link rel="stylesheet" href="/stylesheets/style.css"/><script type="text/javascript" src="../js/jquery-1...
cURL equivalent in Node.js?
...mple in their docs:
var http = require("http");
var options = {
host: 'www.google.com',
port: 80,
path: '/upload',
method: 'POST'
};
var req = http.request(options, function(res) {
console.log('STATUS: ' + res.statusCode);
console.log('HEADERS: ' + JSON.stringify(res.headers));
res....
jquery, domain, get URL
... = url;
return a.hostname;
}
But note, if there is a subdomain (e.g. www.) in the URL it will get returned with the hostname. Conversely, if there is no subdomain the hostname will not have one either.
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