When you want to use variables outside your function for use within your function, you will have to use the keyword global. This will allow you to use variables declared outside of a function. It will even override the variables inside the function if they have the same name. You can also use it to access the variables inside the…
There are a lot of in-built functions in PHP. We have seen several of those already. We talked about string functions like strpos() and mathematical functions like pow(). There is a long list of these in-built functions. But the beauty of functions do not end there. Programmers can create their own functions to perform custom tasks. If you have to…
If you are looking to assign the values of an array to a group of variables with one statement, use list(). This construct is used to give a list of variables some value. They work only with arrays that use numeric indexes. Example: <?php $names = array (“Ashish”, “Michael”, “Chris”); list($name1, $name2, $name3) = $names; echo $name1; echo “<br />”;…
Cycling Through PHP Arrays When accessing the values of PHP arrays, looping them through foreach loops is not the only way. We can get individual values and keys of an array. There are invisible pointers in an array that tells the current position. We can cycle through them to get values at different positions of an array. We use current(),…
There are several ways to access values of arrays in PHP. Since, arrays can go multi-level or multi-dimensional, it can be confusing to access the exact key and its value. But thankfully there is “for each loop” in php which will allows us to loop through an array and get to the exact key and value. Finding the Array Length…
If you want to store multiple values to a single variable name then you have to use Arrays. Arrays use a single variable name with multiple keys. Those keys hold the values or actually map them. Arrays are quite useful for storing and retrieving multiple values, and for storing data obtained through MySQL operations. To create an Array in PHP,…
Loops allow you to repeat certain lines of code. The code is executed repeatedly until a condition is met. This saves you time and also decreases the number of lines of code that you need to have. For Loop This loop specifies the condition and repeats the statements as long as the conditions are met. Example: <?php for($i=1;$i<=5;$i++) { echo…
Conditional statements are used to test conditions in PHP. You test a certain condition and then perform an action based on the condition. Like when a condition is true do this and when the condition is false, do this instead. These statements make use of the logical as well as comparison operators for forming conditions. If/Else If/Else Using this statement,…
Operators in PHP are used for different tasks like comparing or incrementing/decreasing values. They are also used to test logical operations. There are many types of operators that you will be using in PHP. They can be grouped according to their usage. Two main types of operators are comparison and logical operators. These conditions usually come together with conditional statements…
PHP is rich with inbuilt functions that can save you a lot of time and effort. There are several mathematical functions present in PHP which allows you to do a lot within a few lines. Here are the most frequently used php math or arithmetic functions: ceil(), floor() and round() These three functions are used to round up numbers. The…