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How to check that an object is empty in PHP?
...ent:
If by empty you mean has no properties:
$obj = simplexml_load_file($url);
if ( !$obj->count() )
{
// no properties
}
OR
$obj = simplexml_load_file($url);
if ( !(array)$obj )
{
// empty array
}
If SimpleXMLElement is one level deep, and by empty you actually mean that it only h...
Why are dashes preferred for CSS selectors / HTML attributes?
... Dashes.) For this reason, I know that my preference now for creating page URLs is to use-words-with-dashes, and for me at least, this has bled into my naming conventions for other things, like CSS selectors.
share
...
Resource interpreted as Document but transferred with MIME type application/zip
...ess it as a 'Document'. It's probably also worth pointing out that the zip URL is dynamic in my app, so it's nothing to do with caching.
– Ashley Williams
Jul 5 '11 at 19:01
...
Website screenshots
...creenshot.. If you do want accurate screenshots check my answer which uses urlbox
– cjroebuck
Apr 27 '17 at 8:49
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How do I convert an existing callback API to promises?
...quest = require('request'); //http wrapped module
function requestWrapper(url, callback) {
request.get(url, function (err, response) {
if (err) {
callback(err);
}else{
callback(null, response);
}
})
}
requestWrapper(url, function (err, ...
List submodules in a Git repository
...ly, look at .gitmodules. This files enumerates each submodule path and the URL it refers to.
For example, from root of repository, cat .gitmodules will print contents to the screen (assuming you have cat).
Because .gitmodule files have the Git configuration format, you can use git config to parse ...
Redirecting to previous page after authentication in node.js using passport.js
...
In your ensureAuthenticated method save the return url in the session like this:
...
req.session.returnTo = req.originalUrl;
res.redirect('/login');
...
Then you can update your passport.authenticate route to something like:
app.get('/auth/google/return', passport.authe...
How do PHP sessions work? (not “how are they used?”)
... array.
Sometimes, the session id is not stored in a cookie, but sent in URLs, too -- but that's quite rare, nowadays.
For more informations, you can take a look at the Session Handling section of the manual, that gives some useful informations.
For instance, there is a page about Passing the S...
Transmitting newline character “\n”
Given the following URL (working, try it!)
4 Answers
4
...
Stretch and scale a CSS image in the background - with CSS only
...ke people do is to put the background image in the css (ie by background : url("example.png");) and then use the css attribute background-size:100%; beneath it to hopefully scale the image to screen width. This will not work, Will it? If you wish to put a background image for the body then an image ...