PHP array_reduce() ফাংশন
Example
Send the values in the array to a user-defined function and return a string:
<?php
function myfunction($v1,$v2)
{
return $v1 . "-" . $v2;
}
$a=array("Dog","Cat","Horse");
print_r(array_reduce($a,"myfunction"));
?>
Definition and Usage
The array_reduce() function sends the values in the array to a user-defined function and returns a string.
Comment:If the array is empty and no parameter is passed initial Parameter, this function returns NULL.
Description
The array_reduce() function iterates over the array with a callback function to simplify it to a single value.
If the third parameter is specified, it will be treated as the first value in the array or as the final return value if the array is empty.
Syntax
array_reduce(array,myfunction,initial)
| Parameter | Description |
|---|---|
| array | Required. Specify the array. |
| myfunction | Required. Specify the name of the function. |
| initial | Optional. Specify the initial value sent to the function. |
Technical Details
| Return value: | Return result value. |
| PHP Version: | 4.0.5+ |
| Update Log: | Since PHP 5.3.0,initial Parameters accept multiple types (mixed), versions before PHP 5.3.0 only support integers. |
More Examples
Example 1
Set initial Parameters:
<?php
function myfunction($v1,$v2)
{
return $v1 . "-" . $v2;
}
$a=array("Dog","Cat","Horse");
print_r(array_reduce($a,"myfunction",5));
?>
Example 2
Return total:
<?php
function myfunction($v1,$v2)
{
return $v1+$v2;
}
$a=array(10,15,20);
print_r(array_reduce($a,"myfunction",5));
?>
