PHP Conference Japan 2024

Ds\Sequence::sum

(PECL ds >= 1.0.0)

Ds\Sequence::sumReturns the sum of all values in the sequence

Description

abstract public Ds\Sequence::sum(): int|float

Returns the sum of all values in the sequence.

Note:

Arrays and objects are considered equal to zero when calculating the sum.

Parameters

This function has no parameters.

Return Values

The sum of all the values in the sequence as either a float or int depending on the values in the sequence.

Examples

Example #1 Ds\Sequence::sum() integer example

<?php
$sequence
= new \Ds\Vector([1, 2, 3]);
var_dump($sequence->sum());
?>

The above example will output something similar to:

int(6)

Example #2 Ds\Sequence::sum() float example

<?php
$sequence
= new \Ds\Vector([1, 2.5, 3]);
var_dump($sequence->sum());
?>

The above example will output something similar to:

float(6.5)
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