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In where shall I use isset() and !empty()
... it's not a good idea to use this operator for math in case "0" is accidentally a string. This can be dangerous. Instead, use basic >, < and == operators and convert variables using intval() or floatval().
– kaleazy
Feb 14 at 18:08
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How to get innerHTML of DOMNode?
What function do you use to get innerHTML of a given DOMNode in the PHP DOM implementation? Can someone give reliable solution?
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MySQL query to get column names?
I'd like to get all of a mysql table's col names into an array in php?
21 Answers
21
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Calculate total seconds in PHP DateInterval
... +1: nice and clean! Note that getTimestamp() method is available in PHP >= 5.3.0.
– Sk8erPeter
Jun 19 '12 at 11:43
6
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How do I properly escape quotes inside HTML attributes?
...ric html entities over named entities, in that named entities do not cover all characters, while numeric entities do. The full HTML4 list is at w3.org/TR/html4/sgml/entities.html .
– atk
Oct 25 '10 at 14:42
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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...
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...
How to save a PNG image server-side, from a base64 data string
...rings that this tool generates, into actual PNG files on the server, using PHP.
15 Answers
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What does $$ (dollar dollar or double dollar) mean in PHP?
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It's a variable's variable.
<?php
$a = 'hello';
$$a = 'world'; // now makes $hello a variable that holds 'world'
echo "$a ${$a}"; // "hello world"
echo "$a $hello"; // "hello world"
?>
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Convert DateTime to String PHP
I have already researched a lot of site on how can I convert PHP DateTime object to String. I always see "String to DateTime" and not "DateTime to String"
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