<?php

function filter_dot($arr){
    foreach($arr as $arrKey => $arrVal){
        if (strpos($arrVal, ".") !== false) {
            unset($arr[$arrKey]);
        }
    }
    return $arr;
}

$arr = ['1.782,69','0,82','786,35','0,95','5.033','0,95','5.032,61','0,95','786,33','1,16','1.258,15'];

echo '<pre>';
var_dump(filter_dot($arr));
echo '</pre>';

?>

function filter_dot($arr){
    foreach($arr as $arrKey => $arrVal){
        if (str_contains($arrVal, '.')) {
            unset($arr[$arrKey]);
        }
    }
    return $arr;
}