How to extract the relevant elements from this array of associative arrays?

Question

I have the following challenging array of associative arrays in php.

    array(
            (int) 0 => array(
                    'table' => array(
                            'venue' => 'venue1',
                            'name' => 'name1'                                
                    )
            ),
            (int) 1 => array(
                    'table' => array(
                            'venue' => 'venue1',
                            'name' => 'name2'      
                    )
            ),
            (int) 2 => array(
                    'table' => array(
                            'venue' => 'venue2',
                            'name' => 'name3'      
                    )
            ),
            (int) 3 => array(
                    'table' => array(
                            'venue' => 'venue3',
                            'name' => 'name4'      
                    )
            )
    )     

I want to extract a list of relevant names out based on the venue. I would like to implement a function ExtractNameArray($venue) such that when $venue=='venue1', the returned array will look like array('name1', 'name2')

I have been cracking my head over this. I am starting with $foreach and am stuck. How can this be done in php? Thank you very much.

Answer 1

first, you have to pass the array with the data to the function

second, the name of the function should start with lower character (php conventions)

try this

function extractNameArray($array, $venue) {
    $results = array();
    foreach($array as $key=>$value) {
        if(isset($value['table']['venue'])&&$value['table']['venue']==$venue) {
            isset($value['table']['name']) && $results[] = $value['table']['name'];
        }
    }
    return $results;
}

Answer 2

function ExtractNameArray($venue) 
{
    $array = array(); // your array 
    $return_array = array();
    foreach($array as $arr)
    {
        foreach($arr['table'] as $table)
        {
            if($table['venue'] == $venue)
            {
                $return_array[]['name'] = $table['name'];
            }
        }
    }
    return $return_array;
}

You must define $array with you array. Good Luck