if statements works like this
PHP provides various methods for sorting arrays:sort(), asort(), rsort(), arsort() and ksort(). we will discuss each function one by one.
We can use list() and each() function to return only the elements in the array that contain data. With the help of list() and each() functions, we can use entire contents of an array with minimum efforts.
You can get the index of a new element added to an array with the help of next() function. next() and prev() functions enable us to navigate through arrays by moving the pointer to the next or previous element in the array.
Current() and Key() are the useful functions. PHP uses a pointer to keep track of which element being used by the script. We can use Current() and Keys() function to find out the value and index respectively.
Suppose you have an array of 100 elements and you want to retrieve each element then it will be hard to retrieve each element individually. Instead of we can use for loop to retrieve items.
Simply an Array is a group of the data items or we can say An Array is a set of variables that all have same name. for example we can define an array Capitals to represent a set of the capitals name of the some countries.
PHP has also increment and decrement operators. The increment operator (++) adds 1 to the operand value and while (–) decrement operator subtracts 1. We can use these operators as the following form:
In PHP, the arithmetic operators works same as other programming languages simply like as $c=$a + $b (c is the sum of the a and b). In the following example we will perform some arithmetic operations, see the following example: