PHP Get keys from one array of intersected values

Question

in php, if I have two arrays:

array1 = array('a', 'b', 'c');
array2 = array('b', 'c');

Is there a function of combination of functions that will compare the two arrays' values and return the keys from 1 array of the intersection?

If wanting the keys from array1, they would be 1 and 2 If wanting the keys from array2, they would be 0 and 1

I think you meant the keys from array1 would be 1 and 2.

Expedito
– Expedito

2013-08-13 14:40:37 +00:00
Commented Aug 13, 2013 at 14:40 — Expedito
– Expedito, Commented Aug 13, 2013 at 14:40

Alma Do · Accepted Answer · 2013-08-13 14:26:25Z

2

Compare:

$rgResult = array_keys(array_intersect($array1, $array2));

and

$rgResult = array_keys(array_intersect($array2, $array1));

answered Aug 13, 2013 at 14:26

Alma Do

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gen_Eric · Accepted Answer · 2013-08-13 14:30:40Z

2

You're looking for array_intersect

array_keys(array_intersect($array1, $array2));

edited Aug 13, 2013 at 14:30

gen_Eric

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answered Aug 13, 2013 at 14:26

DevZer0

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Comments

Bere · Accepted Answer · 2013-08-13 14:32:30Z

0

array_keys($array1 = array('a', 'b', 'c'); $array2 = array('b', 'c');

$intersection = array_intersect($array1, $array2);

$keys = array();
foreach($intersection as $i){
    $keys[]= array_search($i,$array1);
}
print_r($keys);

answered Aug 13, 2013 at 14:32

Bere

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