PHP array_pad() Function Last Updated : 20 Jun, 2023 Comments Improve Suggest changes Like Article Like Report The array_pad() is a builtin function in PHP and is used to pad a value fixed number of time onto an array. This function inserts an element specified number of times into an array either at front or back. Syntax: array array_pad($input_array, $input_size, $values) Parameters: This function accepts three parameters, all of this which are mandatory to be supplied. $input_array (mandatory): Refers to the array, on which the operation is to be performed, or to which the elements are needed to be added. $total_size (mandatory): Refers to the total size of the new array to be returned. If the value is positive, the elements get added to the end of the array. If the value is negative, the elements get added at the beginning of the array. $values (mandatory): Refers to the value with which padding will take place. The padding takes place only when $total_size is greater than the size of the input_array. Return Value: The function returns a copy of the array padded to the size of $total_size. If the absolute value of $total_size is less than or equal to the length of the array then no padding takes place. It is possible to add, at most 1048576 elements at a time. Examples: Input : array = ("one", "two", "three", "four", "five") $total_size = 7 , $value = "six" Output : Array ( [0] => one [1] => two [2] => three [3] => four [4] => five [5] => six [6] => six ) Input : array = ("one", "two", "three", "four", "five") $total_size = -7 , $value = "six" Output : Array ( [0] => six [1] => six [2] => one [3] => two [4] => three [5] => four [6] => five ) Below programs explains the working of the array_pad() function: Padding elements at end of the array when the $total_size is positive: PhP <?php // PHP function to illustrate the use of array_pad() function Padding($array, $string) { $result = array_pad($array, 7, $string); return($result); } $array = array("one", "two", "three", "four", "five"); $string = "six"; print_r(Padding($array, $string)); ?> Output: Array ( [0] => one [1] => two [2] => three [3] => four [4] => five [5] => six [6] => six ) Padding elements at start of the array when the $total_size is negative: PhP <?php // PHP function to illustrate the use of array_pad() function Padding($array, $string) { $result = array_pad($array, -7, $string); return($result); } $array = array("one", "two", "three", "four", "five"); $string = "six"; print_r(Padding($array, $string)); ?> Output: Array ( [0] => six [1] => six [2] => one [3] => two [4] => three [5] => four [6] => five ) Comment More infoAdvertise with us Next Article PHP array_pad() Function chinmoy lenka Follow Improve Article Tags : Misc Web Technologies PHP PHP-array PHP-function +1 More Practice Tags : Misc 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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