Yesterday I found some people on my [favorite reddit][lolphp] wonder about the output of the following code:
<?php
$a = 1;
$c = $a + $a++;
Michael Pratt mpratt
nikic
/ php_evaluation_order.md
Last active
October 19, 2021 05:47
Analysis of some weird evaluation order in PHP
Blackshawk
/ blog - Explaining My Choices Further.md
Last active
April 25, 2023 19:31
In which I do a little digging about the choices I've made with PHP. This is a long read, but it isn't something that can be explained in one or two paragraphs.
In the comments from my last post and on Twitter I noticed a lot of people who had something to say about PHP. The comments were varied but they usally sounded something like this (sorry @ipetepete, I picked yours because it was the shortest).
...the little bits of soul from all of us who've had to work on, and or maintain large PHP applications. – ipetepete
In Pete's defense, he did go on to say that rest of the stack I was using was a "smorgasbord of awesome". Thanks, Pete. I agree!
I would, however, like to take a little time to correct a misperception in the developer community about PHP. I recently got into this same... discussion... with Jeff Atwood, and I seem to be running into it more and more. So here goes. Please bear with me as I cover a little history further on.
Pete, and everybody else, _you're exactly rig
This is only a summary. For a full list of changes see the NEWS file.
| Feature | RFC / announcement | Author |
|---|---|---|
| Bundled ZendOptimizer+ as OPcache | https://wiki.php.net/rfc/optimizerplus | zeev |
nikic
/ objects_arrays.md
Last active
April 12, 2024 17:05
Post explaining why objects often use less memory than arrays (in PHP)
This is just a small post in response to [this tweet][tweet] by Julien Pauli (who by the way is the release manager for PHP 5.5). In the tweet he claims that objects use more memory than arrays in PHP. Even though it can be like that, it's not true in most cases. (Note: This only applies to PHP 5.4 or newer.)
The reason why it's easy to assume that objects are larger than arrays is because objects can be seen as an array of properties and a bit of additional information (like the class it belongs to). And as array + additional info > array it obviously follows that objects are larger. The thing is that in most cases PHP can optimize the array part of it away. So how does that work?
The key here is that objects usually have a predefined set of keys, whereas arrays don't:
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| <figure class="quote"> | |
| <blockquote>It is the unofficial force—the Baker Street irregulars.</blockquote> | |
| </figure> |
nikic
/ accessors.markdown
Created
October 13, 2012 11:22
Analysis of getter/setter usage in Symfony and Zend Framework
In order to get a bit of "hard data" on what accessors will actually be used for once they are introduced I wrote a small script that scans through a codebase, finds all getter and setter methods and checks them for various characteristics. (The analyze.php file in this Gist.)
Here are the results of running it on a Symfony (Standard) skeleton.
absoluteTotal => 18516 (486.6%)
total => 3805 (100.0%)
skipped => 124 ( 3.3%)
nikic
/ password_hashing_api.md
Created
September 12, 2012 15:04
The new Secure Password Hashing API in PHP 5.5
The [RFC for a new simple to use password hashing API][rfc] has just been accepted for PHP 5.5. As the RFC itself is rather technical and most of the sample codes are something you should not use, I want to give a very quick overview of the new API:
Everybody knows that you should be hashing their passwords using bcrypt, but still a surprising number of developers uses insecure md5 or sha1 hashes (just look at the recent password leaks). One of the reasons for this is that the crypt() API is ridiculously hard to use and very prone to programming mistakes.
I work as an analyst contractor, these days my roles are often a mixture of development and management. I have been asked by a countless number of people what they need to do to get the jobs I’m offered – and it’s simpler than most expect. The market for talented developers in the United Kingdom (and in many talent-lite communities around the world) is such that anyone who merely knows what they are doing has a very good chance of getting a job. Even a job contracting (which ordinarily has senior-level requirements).
To become a web developer with a good salary and employment expectations you need skills. Below I’ll provide a plan to get you towards the top of the largest market: PHP Web Development. Advanced knowledge of everything on this list would immediately make you one of the best, so just strive to have an exposure if not a comprehensive understanding (though the *starred points are essential). To learn these technologies you should use several in combination on on
sgmurphy
/ url_slug.js
Created
July 12, 2012 02:05
URL Slugs in Javascript (with UTF-8 and Transliteration Support)
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| /** | |
| * Create a web friendly URL slug from a string. | |
| * | |
| * Requires XRegExp (http://xregexp.com) with unicode add-ons for UTF-8 support. | |
| * | |
| * Although supported, transliteration is discouraged because | |
| * 1) most web browsers support UTF-8 characters in URLs | |
| * 2) transliteration causes a loss of information | |
| * | |
| * @author Sean Murphy <sean@iamseanmurphy.com> |