PHP a function to remove a specified duplicate entry from an array

<?php

function array_uniq($my_array, $value)
{
    $count = 0;
   
    foreach($my_array as $array_key => $array_value)
    {
        if ( ($count > 0) && ($array_value == $value) )
        {
            unset($my_array[$array_key]);
        }
       
        if ($array_value == $value) $count++;
    }
   
    return array_filter($my_array);
}
$numbers = array(4, 5, 6, 7, 4, 7, 8);

print_r(array_uniq($numbers, 7));
?>