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What is non-blocking or asynchronous I/O in Node.js?
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Synchronous vs Asynchronous
Synchronous execution usually refers to code executing in sequence. Asynchronous execution refers to execution that doesn't run in the sequence it appears in the code. In the following example, the synchronous operation causes the alerts to fire in s...
increment date by one month
...2010.12.11");
$final = date("Y-m-d", strtotime("+1 month", $time));
// Finally you will have the date you're looking for.
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How can I get the last 7 characters of a PHP string?
...r for the 2nd argument.
$newstring = substr($dynamicstring, -7);
From the php docs:
string substr ( string $string , int $start [, int $length ] )
If start is negative, the returned string will start at the start'th character from the end of string.
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Force CloudFront distribution/file update
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Good news. Amazon finally added an Invalidation Feature. See the API Reference.
This is a sample request from the API Reference:
POST /2010-08-01/distribution/[distribution ID]/invalidation HTTP/1.0
Host: cloudfront.amazonaws.com
Authorization:...
How can I implode an array while skipping empty array items?
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You can use array_filter():
If no callback is supplied, all entries of input equal to FALSE (see converting to boolean) will be removed.
implode('-', array_filter($array));
Obviously this will not work if you have 0 (or any other value that evaluates to f...
Remove useless zero digits from decimals in PHP
...n officially suggested method for typecasting... search "type juggling" on php.net
– Gergely Lukacsy
May 6 '16 at 8:44
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What is the difference between Amazon S3 and Amazon EC2 instance?
...s like a remote computer running Windows or Linux and on which you can install whatever software you want, including a Web server running PHP code and a database server.
Amazon S3 is just a storage service, typically used to store large binary files. Amazon also has other storage and database servi...
PHP - Merging two arrays into one array (also Remove Duplicates)
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array_unique(array_merge($array1,$array2), SORT_REGULAR);
http://se2.php.net/manual/en/function.array-unique.php
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Logical Operators, || or OR?
...nlike many other languages where they return the last value checked. So in PHP (27 || 0) returns true, not 27.
– TextGeek
Sep 15 '17 at 15:32
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How can I add new keys to a dictionary?
...ted to strings). dict.update can also take another dictionary, but I personally prefer not to explicitly create a new dictionary in order to update another one.
– bgusach
Feb 13 '19 at 8:38
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