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Php associative array index archive#
Php associative array index code#

The values of the array are 17, 18, 16, and 17. The keys of the array are scott_Mcall, Stalenski, Lydia, Allision, and we used them to assign the age to each student.

Php associative array index code#

The code above is an example of an associative array. For example: 17,Įcho $student_age //this code will display the age of Scot_Mcall as 17Įcho $student_age //this code will display the age of stalenski as 18Įcho $student_age //this code will display the age of Lydia as 16Įcho $student_age //this code will display the age of Allision as 17

We can use the Associative array method to get it done. Suppose we want to assign ages to a group of high school students with their names.

When you want to store the score of a student in different subjects.

When you want to record the salaries of your employees.

When you want to store the age of different students along with their names.

There are situations where you shouldn't use the numeric/indexed array, such as: And value is the value assigned to the array element. Keys are descriptive captions of the array element used to access the value of the array. In an associative array, we make use of key and value. What are Associative Arrays?Īn associative array is a type of array where the key has its own value. Counting from 0 to 4, we can see that 88 falls under index 4, indicating that 88 is the number we're seeking and that will be displayed to the browser. We want to display the element with the index of 4. The code above follows the same pattern as our definition of an array, which states that it counts from zero. You can also choose to display only one element/item of an array in the web browser by doing this: You can also chose to use the echo( ) keyword, but in my case I prefer to use var_dump( ) because it gives a more detailed explanation of the results we get. The var_dump($cars) keyword above will show us the total number of elements we have in the array, the index number of each array, and also the length of each element in the array. Here's an example of a numeric array: įrom the code above I have a variable of $cars which stores an array of 5 elements.

What are Numerical or Indexed Arrays?Ī numerical array is a type of array which can store strings, numbers, and objects. Let's look at how each one works in more detail. There are different types of arrays in PHP. So whenever you want to call the first value of an array you start with 0 then the next is 1.and so on. To create an array in PHP, we use the array function array( ).īy default, an array of any variable starts with the 0 index. Note that the parameters default to sort ascending on both keys and values, but allow granular control over each.An array is a special variable that we use to store or hold more than one value in a single variable without having to create more variables to store those values. I wrote this function to accomplish the task.

Php associative array index archive#

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