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PHP Manual


array_pad

(PHP 4, PHP 5)

array_padPad array to the specified length with a value

Description

array array_pad ( array $input , int $pad_size , mixed $pad_value )

array_pad() returns a copy of the input padded to size specified by pad_size with value pad_value. If pad_size is positive then the array is padded on the right, if it's negative then on the left. If the absolute value of pad_size is less than or equal to the length of the input then no padding takes place. It is possible to add at most 1048576 elements at a time.

Parameters

input

Initial array of values to pad.

pad_size

New size of the array.

pad_value

Value to pad if input is less than pad_size.

Return Values

Returns a copy of the input padded to size specified by pad_size with value pad_value. If pad_size is positive then the array is padded on the right, if it's negative then on the left. If the absolute value of pad_size is less than or equal to the length of the input then no padding takes place.

Examples

Example #1 array_pad() example

<?php
$input 
= array(12109);

$result array_pad($input50);
// result is array(12, 10, 9, 0, 0)

$result array_pad($input, -7, -1);
// result is array(-1, -1, -1, -1, 12, 10, 9)

$result array_pad($input2"noop");
// not padded
?>

See Also

  • array_fill() - Fill an array with values
  • range() - Create an array containing a range of elements




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