CODEWITHSUNDEEP
php
Henkka
Henkka

Reputation: 1663

How to compare 2 different length arrays to eachother

I'm trying to make a function that compares two different length arrays to each other and if they match then some actions are performed. Array1, cell1 compares to array2, cell1, cell2, cellN... Then Array1, cell2 compares to array2, cell1, cell2, cellN...

Something resembling this:

if(array1[$i]==array2[])
{
   // Some actions...
}

How can this be implemented?

Upvotes: 4

Views: 5705

Answers (5)

Kurt Poehler
Kurt Poehler

Reputation: 331

Even if answered I think, just for reference, is good to know that you can make:

$array_1 = array(1,2,3,4,5);
$array_2 = array(2,4,6,8);

foreach (array_intersect($array_1,$array_2) as $match){
    //do something
}

NOTE: may give some problems with associative arrays.

Upvotes: 0

mannan
mannan

Reputation: 11

kindly correct the errors. im comparing the arrays values to display respectively with their paired one

if((cardnumb1[1]==123456789) && (passcode[1]==1234))

                         else if ((cardnumb1[2]==987654321) && (passcode[2]==4567))

                         else if ((cardnumb1[3]==123789456) && (passcode[3]==7890))

Upvotes: 1

Onur Senture
Onur Senture

Reputation: 519

You can use nested loops for this.

for($i=0; $i<count($array1); $i++){
    for($j=0; $j<count($array2); $j++){
        if($array1[$i] == $array2[$j]){
            //some action here
        }
    }
}

Upvotes: 2

Tom
Tom

Reputation: 1339

PHP has in_array for searching an array for a particular value. So what about

foreach ($array1 as $search_item)
{
    if (in_array($search_item, $array2))
    {
        // Some actions...
        break;
    }
}

Upvotes: 6

Markus Hedlund
Markus Hedlund

Reputation: 24294

You can get the difference of the Arrays with the PHP function array_diff.

<?php
$array1 = array("a" => "green", "red", "blue", "red");
$array2 = array("b" => "green", "yellow", "red");
$result = array_diff($array1, $array2);

print_r($result);
?>

Results in

Array
(
    [1] => blue
)

Upvotes: 3

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