array_product


php128 apg

CALCULATE the PRODUCT of values in an ARRAY.

This function is compatible with LOCALE in PHP version 7.4.XX, however in PHP version 8.0.XX it is no longer supported.





This function returns the PRODUCT of values as INTEGER or FLOAT.

This funtion returns 1 if the $array is EMPTY.



<?php

nbr array_product ( arr $array )
 

where,

$array = The input ARRAY

?> 

$array


The input ARRAY.



  1 EXERCISE   

<?php

$arr01 = [ 2.876, 8.0, 18.91, 32.12 ];

echo 'The given ARRAY:<br>';

print_r($arr01);

echo '<br><br>The PRODUCT: ';

setlocale(LC_ALL, 'pt', 'pt-br', 'pt_BR');

$sarr01 = array_product($arr01);

echo $sarr01 . '<br>';

?> 

 RESULT   

PHP 7.4.XX
The given ARRAY:
Array ( [0] => 2.876 [1] => 8 [2] => 18.91 [3] => 32.12 )

The PRODUCT: 13974,8107136

ACCORDING THE BRAZILIAN LOCALE

PHP 8.0.XX
The given ARRAY:
Array ( [0] => 2.876 [1] => 8 [2] => 18.91 [3] => 32.12 )

The PRODUCT: 13974.8107136

NOT COMPATIBLE WITH LOCALE

  2 EXERCISE   

<?php

$arr02 = [ 'two point six hundred and forty-two', 
              'eight point three hundred and thirty-three', 33.47 ];

echo 'The given ARRAY:<br>'; 

print_r($arr02);

echo '<br><br>The PRODUCT: '; 

$sarr02 = array_product($arr02);

echo $sarr02 . '<br>';

?> 

 RESULT   

The given ARRAY:
Array ( [0] => two point six hundred and forty-two [1] => eight point three hundred and thirty-three [2] => 33.47 )

The PRODUCT: 0

  3 EXERCISE   

<?php

$arr03 = [ TRUE, 
                2, 
               '3.44', 
               7.98034, 
               [2,4,6] ];

echo 'The given ARRAY:<br>';  

print_r($arr03);

echo '<br><br>The PRODUCT: ';  

$sarr03 = array_product($arr03);

echo $sarr03 . '<br>';

?> 

 RESULT   

The given ARRAY:
Array
(
[0] => 1
[1] => 2
[2] => 3.44
[3] => 7.98034
[4] => Array
(
[0] => 2
[1] => 4
[2] => 6
)

)

The PRODUCT: 54.9047392

  4 EXERCISE   

<?php

$arr04 = [ TRUE, 
              false,
               NULL,
                2, 
               '3.44', 
               7.98044, 
               "SUM",
               [2,4,6] ];

echo 'The given ARRAY:<br>';  

print_r($arr04);

echo '<br><br>The PRODUCT: ';  

$sarr04 = array_product($arr04);

echo $sarr04 . '<br>';

?> 

 RESULT   

The given ARRAY:
Array
(
[0] => 1
[1] =>
[2] =>
[3] => 2
[4] => 3.44
[5] => 7.98034
[6] => SUM
[7] => Array
(
[0] => 2
[1] => 4
[2] => 6
)

)

The PRODUCT: 0

  5 EXERCISE   

<?php

$arr05 = [ "continents" => ["South America", "Europe"],
                  "countries" => ["Brasil", "Portugal"]]; 

echo 'The given ARRAY:<br>';

print_r($arr05);

echo '<br><br>The PRODUCT: '; 

$sarr05 = array_product($arr05);

echo $sarr05 . '<br>';

?> 

 RESULT   

The given ARRAY:
Array
(
[continents] => Array
(
[0] => South America
[1] => Europe
)

[countries] => Array
(
[0] => Brasil
[1] => Portugal
)

)

The PRODUCT: 1

  6 EXERCISE   

<?php

$arr06 = []; 

echo 'The given ARRAY:<br>'; 

print_r($arr06);

echo '<br><br>The PRODUCT: ';

$sarr06 = array_product($arr06);

echo $sarr06 . '<br>';

?> 

 RESULT   

The given ARRAY:
Array ( )

The PRODUCT: 1

  7 EXERCISE   

<?php

echo "Funtion with a keyed array array:<br><br>";
               
$arr07 = ["bob" => 2, "janet" => 5 ];

echo 'The given ARRAY:<br>'; 

print_r($arr07);

echo '<br><br>The PRODUCT: ';

$sarr07 = array_product($arr07);

echo $sarr07 . ' ---> '; 

               
var_dump($sarr07) . '<br>';

?>

  8 EXERCISE   

<?php

echo "Negative numbers:<br><br>";

$arr08a = array(-2);

$arr08b = array(-2, -3);

$arr08c = array(-2, -3, -4);

$arr08d = array(-1.5);

$arr08e = array(-99999999.9, 99999999.1);


function arrproduct ($var08)
{
    echo '- - - - - - - - - - - - - - - - - - - - - - - - - - -
    <br>The given ARRAY:<br>';
    print_r($var08);
    echo '<br><br>The PRODUCT of therms:<br>';
    $prod08 = array_product($var08);
    echo $prod08 . ' ---> ';
    var_dump($prod08); 
    echo '<br>- - - - - - - - - - - - - - - - - - - - - - - - - - -<br>'; 
}    

arrproduct($arr08a);

arrproduct($arr08b);

arrproduct($arr08c);

arrproduct($arr08d);

arrproduct($arr08e);

?>

  9 EXERCISE   

<?php

echo "Function with a very large array:<br><br>";

$array = array();

for ($i = 0; $i < 99; $i++) {
  $array[] = 11990;
}

echo 'The given ARRAY:<br><pre>'; 
print_r($array);

echo '</pre><br><br>The PRODUCT of therms:<br>'; 
var_dump( array_product($array) );

?>