The PHP language has made many functions available within the core engine- we call these functions language constructs since they are a part of the language as a whole. But one thing that hasn't apparently made the grade yet is a function to determine if a number is odd or even- leaving web developers to make their own functions and statements to get the results themselves. Thankfully, the process is easier than most would think.
Even if readers aren't web developers, they have likely seen the effects an odd number function has had on PHP web development in general. Most websites that have to organize a lot of data will alternate table row styles to make data much easier to read. This can also be seen in commenting systems, lyrics websites, and forum systems. It's just another last-touch that really puts a spin on a finished application.
PHP and databases go hand in hand. Databases are used to store all types of information, both numbers and letters alike. But since databases can grow large in size, and literally have hundreds of columns and thousands of rows, some way to sort the information is necessary. Depending on the situation, an odd or even function in PHP will help out quite a bit.
Odd or even number functions are also used in arrays to organize data. This may only work for certain occasions, but it can help cut down on the number of arrays declared. By making odd numbers a certain value and even numbers another, you can essentially "stuff" another array inside an original array to save space.
Last but not least, we can couple a function to find even and odd numbers with the built-in date functions to achieve different results. We could, for instance, use odd and even numbers to put into algorithms to do all types of things- such as limiting the amount of login attempts a user can make in a given time period or even allowing doing something as simple as displaying data only at certain times. Whatever the case, the possibilities are endless when it comes to being creative in odd and even numbers.
Closing Comments
Even if one isn't much of a programmer, yet likes to design, he or she should consider learning some basic PHP to stay updated with the times. It will lead to more lucrative freelance jobs, make one's self more sought after in employment agencies, and expand one's own horizon.

