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Rob Allen:
Throw an exception when simplexml_load_string fails
September 09, 2014 @ 09:27:13

In a quick post to his site Rob Allen shares a class that he's created to handle and throw an exception any time that the load from a SimpleXML parsing fails.

I keep having to look up how to stop the warning that are emitted when simplexml_load_string & simplexml_load_file fail, so this time I've written the world's simplest little class to take care of it for me from now on.

His "Xml" class wraps around the SimpleXML functionality and checks to see if the resulting object is false. If it is, it uses some internal error handling to fetch the error message result and throws it as a "RuntimeException". This error string comes from a "getXMLErrorString" function that uses the libxml_get_errors function to get the resulting error list.

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simplexml load string file fail exception error handling

Link: http://akrabat.com/php/throw-an-exception-when-simplexml_load_string-fails/

Master Zend Framework:
Create a Simple File Upload Form in Zend Framework 2
June 04, 2014 @ 11:51:06

On his "Master Zend Framework" site today Matthew Setter has a new tutorial showing you how to create a simple file upload through the forms handling in Zend Framework 2. The form will include three parts: an input filter, a form class and a controller action to request to show the resulting form.

Having trouble getting file uploads integrated into your forms in Zend Framework 2? Or are you just curious about how to do it, and you want a quick rundown? If either of these is you, come walk through today's post with me as I show you a simple example of how it's done - along with how to combine it with filters and validators. Before we get started, I could have composed the code in a much shorter form than have I've composed it. But my assumption is that you're likely using the full-stack framework.

He includes summaries describing each of the three parts of the setup and the code you'll need to create each. The validator checks for things like "too big", "too small" and the correct MIME type on the file given. The form itself only includes the file upload element with a description of "Attachment". The controller action creates the form instance and calls an "isValid" when the upload happens to execute the validation. He also throws in the view template to display the form itself.

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zendframework2 simple file upload tutorial form

Link: http://www.masterzendframework.com/forms-2/simple-file-upload-form

LeaseWebLabs.com:
How to use the "yield" keyword in PHP 5.5 and up
May 23, 2014 @ 12:09:47

In a recent post to the LeaseWebLabs blog Maurits van der Schee looks at the use of the "yield" keyword in PHP 5.5 to work with generators. A generator is very similar to a function that returns an array, in that a generator has parameters, can be called, and generates a sequence of values but it yields values one at a time.

The concept of generators is not new. The "yield" keyword exists in other programming languages as well. As far as I know C#, Ruby, Python, and JavaScript have this keyword. The first usage that comes to mind for me is when I want to read a big text file line-by-line (for instance a log file). Instead of reading the whole text file into RAM you can use an iterator and still have a simple program flow containing a "foreach" loop that iterates over all the lines.

He includes a few code examples showing a class that can read in data from a file in chunks and output the lines as they're extracted (versus using something like file). He also talks about a small performance comparison in working with the file pointer, fread over fgets. He even makes a simple benchmark script to compare the overall time and memory consumption of the fetching of different byte "chunks" from the file.

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yield generator file read fread fgets memory time benchmark

Link: http://www.leaseweblabs.com/2014/05/how-to-use-yield-keyword-php

SitePoint PHP Blog:
Introduction to Kirby CMS
April 28, 2014 @ 13:48:31

The SitePoint PHP blog has posted a new article introducing you to Kirby, a database-less content management system that's all file based.

Kirby is a lightweight CMS that probably fits somewhere between feature-rich platforms such as Drupal, and static site generators such as Jekyll. What makes Kirby quite different to most CMS's - and closer to Jekyll in the process - is that it has no database. Instead, everything is stored as files; some for configuration, some for content - all in addition to the usual template files, partials and plugins. In this article I'm going to take a look at Kirby, demonstrate how to use it, and assess some of its strengths and weaknesses.

He walks you through the download and installation process and provides a general overview of the structure of the application and how it works. He gets into the specifics of theming the site to match your own look and feel, shows you how to use "kirbytext", a custom extension of Markdown. He also briefly covers plugins, the main panel and some of the pros and cons of using the system.

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kirby cms content management system file

Link: http://www.sitepoint.com/introduction-kirby-cms/

Edd Mann:
Storing PHP Sessions/File Caches in Memory using TMPFS
April 17, 2014 @ 11:19:59

Edd Mann (of the Three Devs & A Maybe podcast) has shared a method of session storage he worked up to help increase performance in his application. He shows how to store sessions in memory with the help of TMPFS.

Yesterday I was looking through some application logs and noticed a significant bottleneck with I/O reads in the implemented file cache. [...] This was when I found 'tmpfs', saving me from all sorts of issues relating to adding yet another application to the production stack. 'tmpfs' appears as a mounted partition on your system, however, under the hood it allocates and uses a section of physical memory (non-persistent through reboots). [...] his results in the desired speed boosts, without tampering with the application logic itself. Even better, if the mount is unsuccessful for some reason, it will safety fall-back to using the persistent hard-disk solution.

Since PHP sessions make it easy to change the "save_path" location for the data in an ini value, setup is easy. He includes the needed configuration change and the commands you'll need to mount the tmpfs partition on your local file system.

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tmpfs session file cache memory tutorial comamnds ini

Link: http://eddmann.com/posts/storing-php-sessions-file-caches-in-memory-using-tmpfs

Paul Jones:
Leanpub Sample Files With Symfony and Aura
February 27, 2014 @ 09:51:49

In a recent post to his site Paul Jones shares some work that's been done to help generate books in the Leanpub formatting with an Aura framework-based script.

One of the things that bothers me about some cli/console packages is how the commands you write with them end up being tightly coupled to the "framework" the package provides. [...] Most of the time I don't need a "full console application" - I just need to read some input for the command, run my actual command logic, and send some output from the command. The Leanpub Sampler from Matthias Noback is an example of the kind of thing I usually end up doing in small or one-off projects.

The script makes use of the Aura.Cli component for console interaction then a custom object for the actual work. This completely decouples the CLI handling from the code to produce the resulting document. You can find out more about the Aura framework on the project's main site.

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leanpub sample file symfony aura auracli

Link: http://paul-m-jones.com/archives/5921

Rob Allen:
Creating a zip file with PHP's ZipArchive
January 15, 2014 @ 15:40:59

Rob Allen has a new post to his site today showing you how to create a ZIP file with the help of PHP's ZipArchive functionality. The latest versions would need to be installed as an extension (PECL) if they're not already there, but it makes creating the archives a lot simpler.

I recently had a requirement to create a zip file from a number of files created within my application. As it has been years since I last had this problem, I had a look around and discovered that PHP 5.2 has the ZipArchive class that makes this easy. ZipArchive is fully featured, but as I just wanted to create a simple zip file.

All it requires is a few short lines of code - one to open the archive itself, some to add in the files to compress down and another to close and create the file. It's a pretty simple process using this handy extension. Rob also included a bit of sample code showing how to send it out for download with the correct headers.

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zip file archive create tutorial ziparchive

Link: http://akrabat.com/php/creating-a-zip-file-with-phps-ziparchive

Hasin Hayder:
Create personalized phar files in PHP
January 15, 2014 @ 09:32:42

Hasin Hayder has a quick post talking about the creation of personalized phar files (packaged up PHP applications) using the Box Project tool.

Created a screencast to show how you can create phar files, most importantly personalized phar files to store some information inside it and protect it using user's password. Those information is usable only when user providers a correct password. For packaging, I have used http://box-project.org which is an excellent phar packager. I've also used two functions from Josh Hartman's blog to encrypt and decrypt data using Rijndael algorithm.

You can watch the full screencast over on YouTube. It walks you through the entire process of creating a simple script, using the two functions (mc_encrypt and mc_decrypt) to handle the encryption and defining the Box configuration JSON to create the package.

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phar file tutorial screencast boxproject encryption password

Link: http://hasin.me/2014/01/14/create-personalized-phar-files-in-php

Christian Weiske:
PHP 5.6 Large file upload support
December 11, 2013 @ 11:09:47

Christian Weiske has posted information about a feature in the upcoming PHP 5.6 version of the language - large file upload support. This new feature allows files over 4GB to be uploaded correctly.

PHP version 5.6 brings support for file uploads larger than 2GiB. We can say "thank you" to Ralf Lang for the initial patch that fixes bug #44522 , which was open since 2008. During testing uploads of files with a size of 4 - 11GiB on my PHP-CGI setup, I noticed that files above 4GiB did not get uploaded correctly. Michael Wallner was quick to fix that bug, and now 5.6 has fully working support for big files.

PHP 5.6 is still in development and some other new features are slated to be added to it. You can find some of them listed in the RFC section of the PHP wiki.

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php56 large file upload bug patch

Link: http://cweiske.de/tagebuch/php-large-file-uploads.htm

NetTuts.com:
Statamic 101
December 11, 2013 @ 10:40:41

NetTuts.com has a new tutorial posted today introducing you to Statamic, a PHP-based content management system that uses flat-files instead of database entries to manage its content. (One note, Statamic is not free software and there's no "trial" version)

Statamic is a modern PHP CMS which really makes an effort to be easy and intuitive to use. From its flat-file design to its use of technologies, like markdown and Yaml, you can accomplish an outstanding amount of work without writing any code at all. In this article we will take a look at the process from installation to setting up a basic portfolio.

The CMS (downloadable here) has a simpler structure than some other systems as most of the content is just files in the "_content" directory. They talk some about the directory structure of the tool and help you get things configured via the main YAML config. The post then moves on to working with themes and how to get dynamic content in a basic layout. From there they go on to talk about making new content, adding entries and various other topics like administration and templating.

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statamic cms introduction file markdown template layout content

Link: http://net.tutsplus.com/tutorials/php/statamic-101


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