Quick introduction to MongoDB
MongoDB is document based NoSQL database. This means that: it has no schema it has no relations it is agile and scaleable stores information in nested documents of two-dimensional key/value…
PHP date arithmetic
strtotime() function can be used for date arithmetic. Following are some examples: Get next date Prints Get previous month Prints Go back 5 years Prints
Quick introduction to Laravel 5
Laravel is a free and open-source PHP web framework like CodeIgniter and Zend. It is built on the Model-View-Controller (MVC) architectural pattern. It has very good documentation and training material.…
PHP foreach by value vs foreach by reference
When you use a foreach loop, PHP creates a copy of the current element you are using in your loop. Any changes you make to this element is not saved…
Quick way to find out which log file is logging errors
On development systems it is common practice to have different log file to log PHP error logs for different tools and different versions of the same tool. Generally it is…
Escaping string before inserting into MySQL
If a string contains a single quote, it will generate an error. mysqli->real_escape_string() escapes quotes for MySQL. See example:
Converting string to date in PHP
Converting strings to dates in PHP requires the use of two functions. strtotime function converts the string to an epoch timestamp. date function converts the timestamp to the desirable date…
Type casting in PHP
PHP does not support explicit type definition in variable declaration. For example, you CANNOT declare a variable as follows: In PHP, a variable’s type is determined by the context in…
Java and Memory
From a programming point of view, there are essentially six different places to store data on your computer. The fastest storage is the registers since this memory resides inside the…
Java JAR, WAR, and EAR files
.ear, .war, and .jar files are simply files zipped using Java jar tool. Each file is created for a different purpose: .jar files Jar (Java Archive) files contain libraries, resources…