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PHP Quiz PHP CertificatePHP 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
Tip: If you assign a negative size parameter, the function will insert new elements BEFORE the original elements. (See example 2)
Note: This function will not delete any elements if the size parameter is less than the original array's size.
Example 1
<?php
$a=array("Dog","Cat");
print_r(array_pad($a,5,0));
?>
$a=array("Dog","Cat");
print_r(array_pad($a,5,0));
?>
The output of the code above will be:
Array ( [0] => Dog [1] => Cat [2] => 0 [3] => 0 [4] => 0 )
Example 2
With a negative size parameter:
<?php
$a=array("Dog","Cat");
print_r(array_pad($a,-5,0));
?>
$a=array("Dog","Cat");
print_r(array_pad($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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