1. Web site APIs
Web site APIs seem to continue to be one of the most interesting topics searched by PHP developers. Several site APIs gained more interest this year like Stripe, Mega, Expedia, StopForumSpam, Twilio, Soundcloud, GitHub among others.
API access protocols like OAuth and SAML also had very expressive interest.
2. File formats
File formats also contined to have great interest, especially conversion between popular formats like Excel, PowerPoint, Word, PDF, CSV, XML, images, Autocad and Markdown.
Database access API are always very interesting because practically all PHP applications use them.
However, something different happened in 2013, specifically the deprecation of the original MySQL extension in PHP 5.5. This lead to a great interest in alternative APIs, specifically MySQLi and PDO. Microsoft SQL server API also had some interest.
4. Twitter RSS feeds
Twitter could have been included in the category of Web site APIs. However, after Twitter decided to stop serving RSS feeds of tweets of user timelines and search results, the search for alternative solutions using the Twitter API increased last year.
PHP is mostly used as a language to run on the Web server side. This does not prevent enthusiasts to use PHP with specific hardware platforms and devices like Arduino, ONVIF and Mikrotik.
Mobile continues to be a concern of many PHP developers. Last year they have looked for solutions for sending push notifications, making Web sites responsive, using devices like Kindle and accessing platforms like Google Play.
7. Search Engines
Getting ranked on search engines like Google was also one of the top concerns of PHP developers. They looked for SEO solutions, computing Web page heatmaps, getting the Google page rank and search keyword positions.
Frameworks are always a hot topic in the PHP community. Last year PHP developers gained more interest in frameworks like Laravel, NodeJS and MVC frameworks in general.
It is curious that frameworks like Laravel had lots of developers searching for solutions in PHPClasses because, so far, there are not yet any classes here related with that framework, unlike others that are also well known in the PHP community. That seems to show that there is some unfulfilled demand that PHP developers are looking for in the PHPClasses site.
Email solutions are one of the most searched topics by PHP developers. This year standards like DKIM, IMAP and solutions for storing email in databases gained more interest.
Chat solutions always had some interest by PHP developers. Last year, solutions based on WebRTC and Websockets protocols started becoming more interesting.
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