php check multidimensional array for duplicate values

index.php

<?php
$arrays = array(
  array(
    'name'=>'foo',
  ),
  array(
    'name'=>'bar',
  ),
  array(
    'name'=>'foo',
  ),
  array(
    'name'=>'foo',
    'type'=>'baz',
  ),
);


echo "find completely identical arrays\n";
foreach ($arrays as $current_key => $current_array) {
    $search_key = array_search($current_array, $arrays);
    echo "current key: $current_key \n";
    echo "search key: $search_key \n";
    if ($current_key != $search_key) {
        echo "duplicate found for item $current_key\n";
    }
    echo "\n";
}

echo "\n\nfind arrays with duplicate value for 'name'\n";

foreach ($arrays as $current_key => $current_array) {
    echo "current key: $current_key\n";
    foreach ($arrays as $search_key => $search_array) {
        if ($search_array['name'] == $current_array['name']) {
            if ($search_key != $current_key) {
            echo "duplicate found: $search_key\n";
            }
        }
    }
    echo "\n";

}
    

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