CALCULATE the SUM 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.
<?php
nbr array_sum ( arr $array )
where,
$array = The input ARRAY
?>
EXERCISE
<?php
$arr01 = [ 2.876, 8.0, 18.91, 32.12 ];
echo 'The given ARRAY:<br>';
print_r($arr01);
echo '<br><br>The SUM: ';
setlocale(LC_NUMERIC, 'pt-pt', 'pt_PT');
$sarr01 = array_sum($arr01);
echo $sarr01 . '<br>';
?>
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 SUM: ';
$sarr02 = array_sum($arr02);
echo $sarr02 . '<br>';
?>
EXERCISE
<?php
$arr03 = [TRUE,
false,
NULL,
2,
'3.44',
7.98034,
"SUM",
[2,4,6]];
echo 'The given ARRAY:<br><pre>';
print_r($arr03);
echo '</pre><br><br>The SUM: ';
$sarr03 = array_sum($arr03);
echo $sarr03 . '<br>';
?>
EXERCISE
<?php
$arr04 = [ "continents" => ["South America", "Europe"],
"countries" => ["Brasil", "Portugal"]];
echo 'The given ARRAY:<br>';
print_r($arr04);
echo '<br><br>The SUM: ';
$sarr04 = array_sum($arr04);
echo $sarr04 . '<br>';
?>
EXERCISE
<?php
$arr05 = [];
echo 'The given ARRAY:<br>';
print_r($arr05);
echo '<br><br>The SUM: ';
$sarr05 = array_sum($arr05);
echo $sarr05 . '<br>';
?>
EXERCISE
<?php
$i = 0;
while ($i++ < 1000) {
$a[] = $i;
$b[] = (string)$i;
}
$s1 = array_sum($a);
$s2 = array_sum($b);
print_r($s1);
echo '<br><br>';
print_r($s2);
echo '<br><br>';
var_dump($s1, $s2);
echo '<br><br>';
$j = 0;
while ($j++ < 100000) {
$c[] = $j;
$d[] = (string) $j;
}
$s3 = array_sum($c);
$s4 = array_sum($d);
print_r($s3);
echo '<br><br>';
print_r($s4);
echo '<br><br>';
var_dump($s3, $s4);
?>
EXERCISE
<?php
// array with integer values
$input = array(1, 2, 3, 4, 5);
echo "Integer array entries:<br>";
print_r($input);
echo '<br>The SUM: ';
var_dump( array_sum($input) );
echo '<br><br>';
// array with float values
$input = array(1.0, 2.2, 3.4, 4.6);
echo "Float array entries:<br>";
print_r($input);
echo '<br>The SUM: ';
var_dump( array_sum($input) );
echo '<br><br>';
// array with integer and float values
$input = array(1, 2.3, 4, 0.6, 10);
echo "Integer/Float array entries:<br>";
print_r($input);
echo '<br>The SUM: ';
var_dump( array_sum($input) );
?>
EXERCISE
<?php
$n = "10";
$n .= "0";
$nums = [&$n, 1000];
print_r($nums);
echo '<br><br>';
var_dump(array_sum($nums));
echo '<br><br>';
var_dump($n);
?>
EXERCISE
<?php
/*
* Testing array_sum() with different
* types of integer arrays containing
* data of following type:
* integer, octal, hexadecimal,
* maximum and minimum integer values
* & mixed of all integers
*/
// Int array
$int_values = array(3, 2, 100, 150, 25, 350, 0, -3, -1200);
echo "Sum of Integer array:<br>";
print_r($int_values);
echo '<br>The SUM: ' . array_sum($int_values);
// Octal array
$octal_values = array(056, 023, 00, 015, -045, 01, -07);
echo "<br><br>Sum of Octal array:<br>";
print_r($octal_values);
echo '<br>The SUM: ' . array_sum($octal_values);
// Hexadecimal array
$hex_values = array(0xAE, 0x2B, 0X10, -0xCF, 0X12, -0XF2);
echo "<br><br>Sum of Hex array:<br>";
print_r($hex_values);
echo '<br>The SUM: ' . array_sum($hex_values);
// Mixed values int, octal & hex
$mixed_int_value = array(2, 5, -1, 054, 0X3E, 0, -014, -0x2A);
echo "<br><br>Sum of mixed integer values:<br>";
print_r($mixed_int_value);
echo '<br>The SUM: ' . array_sum($mixed_int_value);
?>
EXERCISE
<?php
/*
* sum of array containing different float values
*/
// Simple float array
$float_input = array( 1.1, 2.3, 0.0, 0.5, -2.3, -0.8, .5);
echo "Simple float array:<br>";
print_r($float_input);
echo '<br>The SUM: ' . array_sum($float_input);
// float array with scientific notations
$float_input = array( 1.2e2, 23.4e3, -4.1e2, 0.2e2, 2.1e-2, .5e3);
echo "<br><br>Float array with scientific notations e:<br>";
print_r($float_input);
echo '<br>The SUM: ' . array_sum($float_input);
$float_input = array( 1.2E2, 23.4E3, -4.1E2, 0.2E2, 2.1E-2, .5E3);
echo "<br><br>Float array with scientific notations E:<br>";
print_r($float_input);
echo '<br>The SUM: ' . array_sum($float_input);
// Mixed float array
$float_input = array(
1.2,
0.5
-5.8,
6.334,
-0.65,
1.2e3,
-2.3e2,
5.56E3,
-3.82E-2
);
echo "<br><br>Mixed float array:<br>";
print_r($float_input);
echo '<br>The SUM: ' . array_sum($float_input);
?>
EXERCISE
<?php
/*
* Sum with integer and float array
* containing duplicate values
*/
echo "Array with duplicate values:<br><br>";
// integer array with duplicate values
$int_input = array( 2, 5, 7, 5, 0, -4, 2, 100);
echo "With integer array:<br>";
print_r($int_input);
echo '<br>The SUM: ' . array_sum($int_input);
// float array with duplicate values
$float_input = array( 2.3, 1.9, -4.1, 0.5, 1.9, -4.1, 3.6, 0.5);
echo "<br><br>With float array:<br>";
print_r($float_input);
echo '<br>The SUM: ' . array_sum($float_input);
?>
EXERCISE
<?php
/*
* Sum with 'input' having
* reference variables as elements
*/
$value1 = -5;
$value2 = 100;
$value3 = 0;
$value4 = &$value1;
// input array containing elements as reference variables
$input = array(
0 => 10,
1 => &$value4,
2 => &$value2,
3 => 200,
4 => &$value3,
);
echo "With elements as reference variables:<br>";
print_r($input);
echo '<br>The SUM: ' . array_sum($input);
?>
EXERCISE
<?php
/*
* Sum with associative array
* as 'input' argument
*/
echo "Testing with associative array:<br><br>";
// array with numeric keys
$input = array(0 => 1, 1 => 10, 2 => 0, 3 => -2, 4 => 23.56);
echo "With numeric keys:<br>";
print_r($input);
echo '<br>The SUM: ' . array_sum($input);
// array with string keys
$input = array('a' => 20, "b" => 50, 'c' => 0, 'd' => -30, "e" => 100);
echo "<br><br>With string keys:<br>";
print_r($input);
echo '<br>The SUM: ' . array_sum($input);
?>