searching array.

[RuleBritannia]

Hello

 

If I have a multidimensional array

<?php

Array
(
    [0] => Array
        (
            [id] => 40000
            [type] => automatic
            [status] => error
            [colour] => o
        )
    [1] => Array
        (
            [id] => 50000
            [type] => automatic
            [status] => good
            [colour] => e
)
)
?>

I want to search for the status 'error', and if it exists within the array, return true(thats it(dont need keys and such to locate it))

 

I am fully aware I can just make a loop, But I want to know if its possible using a core function.

 

I have tried continuosly using functions like array_search, in_array, array_keys,array_values, And I cannot acheive it, But I am sure its possible.

 

Thanks in advance.

 

 

[Psycho]

I want to know if its possible using a core function.

No

 

 

But I am sure its possible.

It's not (at least not with a single built-in function)

 

 

 . . dont need keys and such to locate it.

If you are going to go to the trouble of building something, might as well build it to be extensible.

[Psycho]

<?php


function subarray_search($searchArray, $searchParam)

{

    $searchKey = key($searchParam);

    $searchValue = current($searchParam);

    foreach($searchArray as $index => $subArray)

    {

        if(isset($subArray[$searchKey]) && $subArray[$searchKey]=$searchValue)

        {

            return $index;

        }

    }

    return false;

}



$findErrorStatus = subarray_search($myArray, array('status'=>'error'))


if($findErrorStatus !== false) {

    echo "A status is in error";

} else {

    echo "None of the statses are in error";

}


?>

[RuleBritannia]

No

 

 

It's not (at least not with a single built-in function)

 

 

If you are going to go to the trouble of building something, might as well build it to be extensible.

 

Thanks for the function below, But I will continue trying for a while as I believe there maybe someway of acheiving this.

As for building something to be extensible, I want to make my code as lightweight(resourcefully and both lines of code) as possible

[RuleBritannia]

Ok So I did manage to find a core function to do this

For those interested, array_column is the function.

 

In what I was trying to acheive here, We can use it like this.

<?php

Array
(
[0] => Array
(
[id] => 40000
[type] => automatic
[status] => error
[colour] => o
)
[1] => Array
(
[id] => 50000
[type] => automatic
[status] => good
[colour] => e
)
)

$status = array_column($array,'status');

//returns

[0] = error
[1] = good

?>

With this result in a nice array, we can just use another simple function like in_array to test if the array contains a error string.

 

I believe this is a much more elegant and simple way than to use big created functions or loops.

 

EDIT, 1 last thought.

 

If anybody has any other alternatives, please post, I have also found another, but its not so elegant as it consists of using 5 functions chained, But there is proberly even more ways to acheive this result.

 

Thanks

[.josh]

okay well then you can do

 

return false!==array_search('error',(array_column($array,'status')));

but note that array_column is introduced in php 5.5.0 so using it will probably not be very portable for a while..