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PHP Arrays

PHP array is an ordered map (contains value on the basis of key). It is used to hold multiple values of similar type in a single variable.


Advantage of PHP Array

Less Code: We don't need to define multiple variables.

Easy to traverse: By the help of single loop, we can traverse all the elements of an array.

Sorting: We can sort the elements of array.


PHP Array Types

There are 3 types of array in PHP.

  1. Indexed Array
  2. Associative Array
  3. Multidimensional Array

PHP Indexed Array

PHP index is represented by number which starts from 0. We can store number, string and object in the PHP array. All PHP array elements are assigned to an index number by default.

There are two ways to define indexed array:

1st way:

2nd way:

Example

File: array1.php

Output:

Season are: summer, winter, spring and autumn
File: array2.php

Output:

Season are: summer, winter, spring and autumn
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PHP Associative Array

We can associate name with each array elements in PHP using => symbol.

There are two ways to define associative array:

1st way:

2nd way:

Example

File: arrayassociative1.php

Output:

Sonoo salary: 350000
John salary: 450000
Kartik salary: 200000
File: arrayassociative2.php

Output:

Sonoo salary: 350000
John salary: 450000
Kartik salary: 200000
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PHP Multidimensional Array

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