Array_fill

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  1. Array_fill_keys
  2. Php Array_fill_keys

The fill method fills the specified elements in an array with a static value. You can specify the position of where to start and end the filling. If not specified, all elements will be filled. Note: this method overwrites the original array. Below is a java code demonstrates the use of fill method of Arrays class. The example presented might be simple however it shows the behavior of the fill method. The arrayfill function fills an array with values.

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  • The C Standard Library
  • The C++ Standard Library
  • The C++ STL Library
  • C++ Programming Resources
Array_fill
  • Selected Reading

Description

The C++ function std::array::fill() sets given value to all elements of array.

Declaration

Following is the declaration for std::array::fill() function form std::array header.

Parameters

val − value to be set

Return Value

Array_fill
  • Selected Reading

Description

The C++ function std::array::fill() sets given value to all elements of array.

Declaration

Following is the declaration for std::array::fill() function form std::array header.

Parameters

val − value to be set

Return Value

None

Exceptions

None

Time complexity

Linear i.e. O(n)

Example

The following example shows the usage of std::array::fill() function.

Let us compile and run the above program, this will produce the following result −

array.htm

PHP array_fill() Function

The PHP array_fill() function fills an indexed array with values. The function basically creates an indexed array of specific size, with specific default value for elements, and with a specified index for the first item.

We can create only indexed arrays using array_fill() function.

Syntax – array_fill()

Array_fill_keys

The syntax of array_fill() function is

where

Function Return Value

array_fill() returns the filled array

Example 1: Fill Array with Values

Php Array_fill_keys

In this example, we will create an array and fill it with value 'apple'. The items in array start with index 6, and will have 3 items in total.

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Output

Example 2: Warning: array_fill() expects parameter 1 to be int

In this example, we will call array_fill() function with a string 'a' passed as argument for index parameter.

PHP Program

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Output

As array_fill() expects an integer for the index parameter. So, it will raise a warning as shown below.

Conclusion

In this PHP Tutorial, we learned how to create an indexed array of specific size and default value for the items, using PHP Array array_fill() function.





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