PHP array_pad() Function


Complete PHP Array Reference

Definition and Usage

The array_pad() function inserts a specified number of elements, with a specified value, to an array.

Syntax

array_pad(array,size,value)

Parameter Description
array Required. Specifies an array
size Required. Specifies the number of elements in the array returned from the function
value Required. Specifies the value of the new elements in the array returned from the function


Tips and Notes

Hint: If you assign a negative size parameter, the function will insert new elements BEFORE the original elements. (See Example)

Note: This function will not delete any elements if the size parameter is less than the original array's size.

Example

<?php
$a=array("Dog","Cat");
print_r(array_pad($a,5,0));
?>

The output of the code above will be:

Array ( [0] => Dog [1] => Cat [2] => 0 [3] => 0 [4] => 0 )


Example

With a negative size parameter:

<?php
$a=array("Dog","Cat");
print_r(array_pad($a,-5,0));
?>

The output of the code above will be:

Array ( [0] => 0 [1] => 0 [2] => 0 [3] => Dog [4] => Cat )


Complete PHP Array Reference
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