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view the version of this page	Last updated: Wed, 15 Jan 2003

array_sum

(PHP 4 >= 4.0.4)

array_sum -- Calcule la somme des valeurs du tableau

Description

mixed array_sum ( array arr)

array_sum() retourne la somme des valeurs du tableau, sous forme d'un entier ou d'un nombre � virgule flottante.

Exemple 1. Exemple avec array_sum()
<?php $a = array(2,4,6,8); echo "somme(a) = ".array_sum($a)."\n"; // affiche : somme(a) = 20 $b = array("a"=>1.2,"b"=>2.3,"c"=>3.4); echo "somme(b) = ".array_sum($b)."\n"; // affiche : somme(b) = 6.9 ?>

User Contributed Notes
array_sum

mlong at mlong dot org 05-Apr-2002 12:08
`Quoting: Note: PHP versions prior to 4.0.6 modified the passed array itself and converted strings to numbers (which most of the time converted them to zero, depending on their value). --` `FYI This is still the behaviour in 4.1.1.`

n dot dose at leo-media dot de 09-Apr-2002 11:33
`> Note: PHP versions prior to 4.0.6 ... And also on 4.1.2 (on windows).`

office at at at universalmetropolis dot com
17-Mar-2003 04:22

A practical implementation of this function: creating a standardised
error-checking process.

// check some
fields

if(strlen(trim($username))<3){

$errormessage[]="You
need to enter a
username";

}else{

$errormessage[]=0;

}

if(strlen(trim($password))<3){

$errormessage[]="You
need to enter a
password";

}else{

$errormessage[]=0;

}

//
check to see if there were any errors (an error-free submission will have
a sum of 0)

if(array_sum($errormessage)!=0){

print
"error!"; // (I use a separate error display
function)

}else{

// no errors found, proceed with
submission

}

array_splice	array_unique

	Last updated: Wed, 15 Jan 2003

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