Does PHP's array support string subscripts?

PHP’s array supports string subscripts; the subscript of a PHP array, that is, the index value, can be a string or a number. The array whose subscript is a string is an associative array, which is a An array with a special indexing method, and the array whose subscript is a number is an index array, and its subscript value must be an integer.

The operating environment of this article: Windows 10 system, PHP version 8.1, Dell G3 computer

PHP’s array supports string subscripts

The subscript (index value) of the php array can be a string or a number. The array whose subscript is a string is an associative array, which is an array with a special indexing method; the array whose subscript is a number is an index array, and its subscript value must be an integer, starting from 0 and so on.

Associative array with specified keys, each of its ID keys is associated with a value. is an array using the keys assigned to the array. Using numeric arrays is not the best practice when storing data about specifically named values. With associative arrays, we can use values ​​as keys and assign values ​​to them.

Associative arrays in PHP store data in the form of key-value pairs. Unlike numerically indexed arrays, you can index each element using a label or key. Keys are easy to remember. For example, you can easily store structured data in an associative array. In this article, we will discuss PHP associative arrays. Additionally, we will discuss ways to create, insert, and access elements in associative arrays.

Creating Associative Arrays in PHP

Creating associative arrays in PHP is easy. Suppose we want to create an array to store students' scores in an array. It is best to store the student name as the key and the score as the value.

<?php
   
  $scoreArray = array(
    &#39;Chandler&#39; => 50, 
    &#39;Monica&#39; => 80, 
    &#39;Ross&#39; => 95
  ); 
?>

Note:

$scoreArray is the name of the variable.

['KeyName'] is the index key of the element.

The integer value is the student's score.

Inserting into associative array in PHP

You can insert new elements into associative array in PHP using assignment operator, As shown below:

<?php
  //Creating an Array
  $scoreArray = array(
    &#39;Chandler&#39; => 50, 
    &#39;Monica&#39; => 80, 
    &#39;Ross&#39; => 95
  ); 
        //Inserting New Elements
  $scoreArray[&#39;Joey&#39;] = 75;
  $scoreArray[&#39;Rachael&#39;] = 55;
?>

In the above code snippet, we first initialize an array with some key-value pairs. Then we insert the new element by assigning the value to a key.

Note: You can also create an array by initializing an empty array and then inserting elements into it.

<?php
  
  $scoreArray = array(); 
  $scoreArray[&#39;Joey&#39;] = 75;
  $scoreArray[&#39;Rachael&#39;] = 55;
?>

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