15 very useful PHP code snippets for PHP developers | ViralPatel.net Following are list of 15 most useful PHP code snippets that a PHP developer will need at any point in his career. Few of the snippets are shared from my projects and few are taken from useful php websites from internet. You may also want to comment on any of the code or also you can share your code snippet through comment section if you think it may be useful for others. 1. 2. 3. The above code will not work in case your client is behind proxy server. 4. This function will return the duration of the given time period in days, hours, minutes and seconds. e.g. secsToStr(1234567) would return “14 days, 6 hours, 56 minutes, 7 seconds” 5. 6. Required Extension: SimpleXML 7. 8. Following is the PHP code to create the JSON data format of above example using array of PHP. Following code will parse the JSON data into PHP arrays. 9. 10. This basic snippet will create a random authentication code, or just a random string. 11. Validate a date in “YYYY-MM-DD” format. 12. 13. 14. 15.
Top 20+ MySQL Best Practices Database operations often tend to be the main bottleneck for most web applications today. It's not only the DBA's (database administrators) that have to worry about these performance issues. We as programmers need to do our part by structuring tables properly, writing optimized queries and better code. In this article, I'll list some MySQL optimization techniques for programmers. Before we start, be aware that you can find a ton of useful MySQL scripts and utilities on Envato Market. Most MySQL servers have query caching enabled. The main problem is, it is so easy and hidden from the programmer, most of us tend to ignore it. The reason query cache does not work in the first line is the usage of the CURDATE() function. Using the EXPLAIN keyword can give you insight on what MySQL is doing to execute your query. The results of an EXPLAIN query will show you which indexes are being utilized, how the table is being scanned and sorted etc... After adding the index to the group_id field:
7 Secure, Lightweight, and Easy to Use PHP Frameworks Choosing a good PHP frameworks can help you develop complex Rich Internet Applications quickly, with a best practices oriented approach, and saving a lot of time reusing code snippets that are already available. There are a lot of interesting PHP frameworks you can choose for your next web project. Which framework you choose is really a personal decision. Today we will focus on 7 secure, lightweight and easy to use PHP Frameworks. Why Use a PHP Framework? There are plenty of reasons to use a PHP Framework to build your websites. 1. Below we’ve covered some of the best frameworks available today. 1. CodeIgniter is a powerful, high-performance, open-source PHP framework that helps you author PHP applications rapidly. CodeIgniter has an exciting online manual, a couple of helpful video tutorials and an active user forum. Useful Resources for getting started with CodeIgniter 2. Kohana is a PHP 5 framework that uses the Model View Controller architectural pattern. 3. 4. 5. 6. 7.
PHP Optimization Tips | ProgTuts This tutorial will explain many small techniques which will, hopefully, help optimize your php scripts. I considered myself a bit of a PHP pro until I started researching some of this stuff and realized that there is a whole realm of information out there about optimizing php that I didn’t know about. I hope you will be as surprised as I was about some of the things you might learn from this article. Output of Data So first off lets start with outputting data to the user. Here are some handy tips to remeber: echo is faster than print (cite) When outputting strings: Single quotes (’) with concatenation is faster than putting your variables inside a double quote (”) string. Or even better: Use echo’s multiple parameters instead of string concatenation. Loops and Counting Here are some ways to make your loops and counting a bit more efficient. Use pre-calculations and set the maximum value for your for-loops before and not in the loop. When checking the length of strings: When incrementing: And
10 code snippets for PHP developers « The html blog I’ve compiled a small list of some useful code snippets which might help you when writing your PHP scripts… Email address check Checks for a valid email address using the php-email-address-validation class. Source and docs: 01.include('EmailAddressValidator.php'); 03. 04.if ($validator->check_email_address('test@example.org')) { 07.else { Random password generator PHP password generator is a complete, working random password generation function for PHP. 01.function generatePassword($length=9, $strength=0) { 02. 03. 04. if ($strength & 1) { 05. 07. if ($strength & 2) { 08. 10. if ($strength & 4) { 11. 13. if ($strength & 8) { 14. 17. 18. 19. for ($i = 0; $i < $length; $i++) { 20. if ($alt == 1) { 21. 22. 23. } else { 24. 25. 28. return $password; Get IP address Returns the real IP address of a visitor, even when connecting via a proxy. 01.function getRealIpAddr(){ 02. if (! 04. 06. elseif (! 08. 10. else{ 11. 13. return $ip; XSL transformation 01. 04. 05. 08.
extremely useful PHP classes PHP PSD Reader A few weeks ago, I wrote an article about this PHP which allow you to display any Adobe PSD file on screen. Very usefull to create preview of PSDs designed for clients, for example.Download Browser detect One of the most common (and boring) problem for front-end developers is definitely cross-browser compatibility. Akismet Remember those days without spam? ADOdb The large majority of websites and web apps are using databases to store all kinds of data. HTML Purifier As it name tells, HTML Purifier is a PHP class created to help you writing a better code. Google charts API Charts are very useful and highly asked by clients, but they can be a lot of work. pChart pChart is another chart class, and it is as good as Google charts API. PHP Excel Excel documents are highly popular in the corporate world. Country from IP Some websites are able to detect your location and automatically display information related with your language. Cache Manager WPGet
Simple Layouts with PHP This tutorial is for those starting out in PHP and want to learn a great way to create layouts. This will help reduce redundancy and keep you from writing too much code. Download the Source Anyone that has been developing HTML based sites for some time has undoubtedly ran in to the issue of keeping the design consistent across multiple pages. Most websites follow a similar layout to the picture. Technique #1 A lot of sites follow this kind of layout scheme The first technique is the entry level solution that works across nearly all situations. <! Take out everything up to the point and put that in a new file called head.php. <? Now just put whatever HTML/PHP content you want in between those two include statements and check it out in a browser. It may be easier to think of it as a puzzle, you are piecing together a complete HTML page with includes. Technique #2 Alright we have that under our belt let’s look at another solution. <! Now anyone who knows a little PHP might be screaming “INSECURE!”
Twig - The flexible, fast, and secure template language for PHP PHP Help Tutorial: PHP Basic Pagination Basic Pagination As a web developer, you will often be tasked to display large amounts of data to the user in some kind of easy to read format. Let's say for instance you have a list of employees in your database, and you want to be able to list them on your web page. If you only have a dozen or so employees, it's no big deal to just make a simple loop and display them all on the same page, right? Well what happens when you have 50 employees? 100? Pulling out all that data at the same time can leave your user tapping his fingers on the desk wondering what the frak is taking so long, and when he finally does get his info, it's a whole frakking novel on one page! Well anyways, it makes way more sense to break up your list into page-sized chunks, and only query your database one chunk at a time. First things first, you need a table with some data in your database to work with. If you opted to make a new table with that info, here's a quick and dirty script to get it populated: <? <?
9 Tips For Working with MySQL Databases MySQL is one of the most popular relational database management systems (RDBMS) around, with over 6 million installations. It’s a fantastic choice for any new developer, because of its open source nature, wide support and abundance of tutorials available on the subject. Here are some great tips and tools (beside phpMyAdmin) to improve your MySQL coding, and to help you save time. Installing SQL If you’re a newbie to the server side coding arena, don’t worry. Mac only PHP, SQL & Apache Installer Windows, Linux & Mac installer A windows only LAMP installer MySQL Server 5.1 If you just want MySQL server, and like using command line then this might suit you. For info on how to install and work with the MySQL server, check this NetTuts tutorial: Everything You Need to Get Started With MySQL. SQL Tips 1- Optimize your code Imagine if you have 100 records, 10 columns.Your working with a database of your clients details, and need to select their name, phone number and address. SELECT * FROM clients;
Absolute paths for PHP include