Find multiple array inside a single array

Question

$a = 'red';
$b = 'blue'; 
$colors = ['red', 'green', 'blue', 'black'];

I am trying to check if both $a, and $b are present in $colors If yes, return true else return false

I could obviously do

if(in_array($a, $colors) && in_array($b, $colors)){
  //true
}

But, I am hoping for an array function that can do both in on call, or any method simpler than that. I tried with array_intersect() to no avail.

No. *Confirm the existence of multiple values inside an array* — samayo, Dec 01 '13 at 22:25
@undefined You are wrong. I check that link before even asking this. It is two entirely different question. — samayo, Dec 01 '13 at 22:26
Look at http://stackoverflow.com/questions/7542694/in-array-multiple-values. It looks like your question has already been asked. — sheng, Dec 01 '13 at 22:35
@ShengSlogar Yes, it does seem to have been answered. Not sure if all the answers I have seen so far provider simpler solutions to the example I have posted so-far — samayo, Dec 01 '13 at 22:39
Look at the accepted answer to the link I gave you. It uses ``array_intersect`` and it is the easiest way I've found as it dosen't use && for each wanted value. — sheng, Dec 01 '13 at 22:43
Thanks but I have went with && to get the job done, as it calls less functions resulting to less overhead of the script — samayo, Dec 03 '13 at 18:53

score 3 · Accepted Answer · answered Dec 01 '13 at 22:30

array_intersect() should have worked, but you may also try array_diff(). If the result is an empty array, then every element of the first array was found in the second array.

<?php
if(count(array_diff(array($a, $b), $colors)) == 0)
{
// Both found
}
?>

score 1 · Answer 2 · answered Dec 01 '13 at 22:35

1

$c = array($a, $b);
if (count(array_intersect($c, $colors)) === count($c)) {
     // ...
}

answered Dec 01 '13 at 22:35

Ram

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Find multiple array inside a single array

2 Answers2