search for a string in array of arrays in PHP

Question

I have an array like this. I get this from a server's response :

So sometimes the array is like this :

$array = 
    Array
    (
        [0] => Message: Thanks for all 
        [1] => Response: Goodbye
        [2] => 
        [3] =>  inactive
        [4] =>  active call
        [5] =>  active channels
        [6] =>  Hello                                             
        [7] =>  Hi
        [8] =>  yes     
        [9] =>  no      
    )

and sometimes it's like this :

$array = 
    Array
    (
        [0] => Message: Thanks for all 
        [1] => Response: Goodbye
        [2] => 
        [3] => SessionTV: 2019-06-24T17:29:53.925+0530
        [4] => SessionTV: 2019-06-24T17:29:53.925+0530
        [5] => SessionTV: 2019-06-24T17:29:53.925+0530
        [6] => Event: 0
        [7] =>  active channels
        [8] =>  Hello                                             
        [9] =>  Hi
        [10] =>             
    )

This is what I tried :

if (in_array("Event:", $array)) 
  { 

        array_shift($minarr);
        array_shift($minarr);
        array_shift($minarr);
        array_shift($minarr);
        array_shift($minarr);
        array_shift($minarr);
        array_shift($minarr);
  } 
else
  { 

        array_shift($minarr);
        array_shift($minarr);
        array_shift($minarr);
        array_shift($minarr);
        array_shift($minarr);
    } 

But this doesn't work.

Expected output in both cases is :

Array
(
    [0] =>  Hello                                             
    [1] =>  Hi
    [2] =>  yes   
    [3] =>  no        
)

and

Array
(
    [0] =>  Hello                                             
    [1] =>  Hi
    [2] =>        
)

So basically I just shift some rows from the array if it contains the string Event: and shift some other rows if it doesn't contain the string Event: .

How do I search for a string in an array like this?

Answer 1

you can use array_walk with strpos , the solution is based on the provided input

$res = [];
array_walk($array, function($v, $k) use (&$res){
  if(strpos($v, ':') === false && strpos($v, 'active') === false && $v != ''){
    $res[] = $v;
  }
}); 

https://3v4l.org/JDFZg

Answer 2

If the goal is to obtain all values after active channel , and assuming that all values in the array is numerically indexed, then you can find the active channels element with array_search() . This returns the key of that element (first occurrence). Use this with array_slice() to slice away those first elements. Add 1 to the return of array_search() , as you want to remove that as well.

$key = array_search('active channels', $array);
$output = array_slice($array, $key + 1);

If your array is not numerically indexed, you can fetch the values by using array_values() first, which is the same array, just numerically indexed.

$array = array_values($array);
$key = array_search('active channels', $array);
$output = array_slice($array, $key + 1);

• Live demo at https://3v4l.org/UVUsr