PHP array_fill() function Last Updated : 20 Jun, 2023 Summarize Suggest changes Share Like Article Like Report The array_fill() is an inbuilt-function in PHP and is used to fill an array with values. This function basically creates an user-defined array with a given pre-filled value. Syntax: array_fill($start_index, $number_elements, $values) Parameter: The array_fill() function takes three parameters and are described below: $start_index: This parameter specifies the starting position of filling up the values into the array, the user wants to create. If $start_index is negative, the first index of the returned array will be $start_index and the following indices will start from zero. So it is better to assign a positive value to it. This is a mandatory parameter and must be supplied. $number_elements: This parameter refers to the number of elements, the user wants to enter into the array. The $number_elements should be positive (including 0, for ver 5.6.0) otherwise E_WARNING is thrown. This is also a mandatory parameter. $values : This parameter refers to the values we want to insert into the array. These values can be of any type. Return Type: The array_fill() function returns a filled user-defined array, with values described by $value parameter. Examples: Input : $start_index = 2; $number_elements = 3; $values = "Geeks"; Output : Array ( [2] => Geeks [3] => Geeks [4] => Geeks ) Input : $start_index = -10; $number_elements = 3; $values = 45; Output : Array ( [-10] => 45 [0] => 45 [1] => 45 ) Below program illustrates the working of array_fill() function in PHP: PHP <?php // PHP code to illustrate the working of array_fill() function Fill($start_index, $number_elements, $values){ return(array_fill($start_index, $number_elements, $values)); } // Driver Code $start_index = 2; $number_elements = 5; $values = "Geeks"; print_r(Fill($start_index, $number_elements, $values)); ?> Output: Array ( [2] => Geeks [3] => Geeks [4] => Geeks [5] => Geeks [6] => Geeks ) Reference: http://php.net/manual/en/function.array-fill.php Advertise with us C chinmoy lenka Follow Similar Reads PHP array_chunk() Function The array_chunk() function is an inbuilt function in PHP which is used to split an array into parts or chunks of given size depending upon the parameters passed to the function. 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