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How to solve “Fatal error: Class 'MySQLi' not found”?
...amazon linux, it would be something like sudo yum install php56-mysqlnd.x86_64 (pick the one matching to which version of php you have installed)
– auspicious99
Dec 3 '18 at 10:46
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Prevent any form of page refresh using jQuery/Javascript
...online system tries real hard to do #2, and the situation described above happens all the time. I usually have to wait until the server-side session expires before I can use the banking system again.
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How can I remove all my changes in my SVN working directory?
...ame
svn status --no-ignore | grep '^\?' | \
perl -ne 'print "$1\n" if $_ =~ /^\S+\s+(.*)$/' | \
tr '\n' '\0' | xargs -0 rm -rf
Tested on Linux; may work in Cygwin, but relies on (I believe) a GNU-specific extension which allows xargs to split based on '\0' instead of whitespace.
The advan...
Adding header for HttpURLConnection
...oder().encodeToString((username+":"+password).getBytes(StandardCharsets.UTF_8));
httpConn.setRequestProperty ("Authorization", "Basic "+basicAuth);
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Collections.emptyList() vs. new instance
...inal <T> List<T> emptyList() {
return (List<T>) EMPTY_LIST;
}
So if your method (which returns an empty list) is called very often, this approach may even give you slightly better performance both CPU and memory wise.
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What's the difference between “Layers” and “Tiers”?
...the physical
deployment of layers.
Source: Rockford Lhotka, Should all apps be n-tier?
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JavaScript variable number of arguments to function
... you can accept variable number of arguments with this syntax:
function my_log(...args) {
// args is an Array
console.log(args);
// You can pass this array as parameters to another function
console.log(...args);
}
Here's a small example:
function foo(x, ...args) {
console.l...
Differences between Perl and PHP [closed]
...d slices are assignable, which has all sorts of uses. In PHP, you use array_slice to extract a slice and array_splice to assign to a slice.
You can leave out the argument to the subscript operator in PHP for a bit of magic. In Perl, you can't leave out the subscript.
Perl hashes are unordered.
Perl ...
Difference between and
...P script (checkout.php) that process the above form's action:
<?php var_dump($_POST); ?>
Test the above on your local machine by creating the two files in a folder named /tmp/test/ then running the built-in PHP web server from shell:
php -S localhost:3000 -t /tmp/test/
Open your browser ...
Java RegEx meta character (.) and ordinary dot?
...ork, but some regex engines will treat this as syntax errors, for example \_ will cause an error in .NET.
Some others will lead to false results, for example \< is interpreted as a literal < in Perl, but in egrep it means "word boundary".
So write -?\d+\.\d+\$ to match 1.50$, -2.00$ etc. and...