compare arrays : one array is contained in the second array (key+value)

Question

i want to check if one array is contained in the second array , but the same key and the same values,

(not need to be equal, only check that all the key and value in one array is in the second)

the simple thing that i do until now is :

function checkSameValues($a, $b){

        foreach($a as $k1 => $v1){                                  
            if($v1 && $v1 != $b[$k1]){
                return false;
                break;                                      
            }
        }
        return true;
    }

Is there a simpler(faster) way to check this ?

thanks

Toto · Accepted Answer · 2010-07-22 12:45:18Z

3

I would do

$array1 = array("a" => "green", "b" => "blue", "c" => "white", "d" => "red");
$array2 = array("a" => "green", "b" => "blue", "d" => "red");
$result = array_diff_assoc($array2, $array1);
if (!count($result)) echo "array2 is contained in array";

answered Jul 22, 2010 at 12:45

Toto

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Comments

Cristian · Accepted Answer · 2010-07-22 12:44:29Z

1

What about...

$intersect = array_intersect_assoc($a, $b);
if( count($intersect) == count($b) ){
    echo "yes, it's inside";
}
else{
    echo "no, it's not.";
}

array_intersect_assoc array_intersect_assoc() returns an array containing all the values of array1 that are present in all the arguments.

edited Jul 22, 2010 at 12:44

answered Jul 22, 2010 at 12:38

Cristian

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Comments

Marcx · Accepted Answer · 2010-07-22 12:35:54Z

0

function checkSameValues($a, $b){
   if ( in_array($a,$b) ) return true;
   else return false;
}

answered Jul 22, 2010 at 12:35

Marcx

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1 Comment

Haim Evgi Over a year ago

i need to check the same key and the same value , in_array check only values!

Dennis Haarbrink · Accepted Answer · 2010-07-22 12:45:31Z

0

This obviously only checks depth=1, but could easily be adapted to be recursive:

// check if $a2 is contained in $a1
function checkSameValues($a1, $a2)
{
    foreach($a1 as $element)
    {
        if($element == $a2) return true;
    }
    return false;
}

$a1 = array('foo' => 'bar', 'bar' => 'baz');
$a2 = array('el' => 'one', 'another' => $a1);

var_dump(checkSameValues($a2, $a1)); // true

answered Jul 22, 2010 at 12:45

Dennis Haarbrink

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