Error (Undefined offset: 1) of PHP and jquery

I have a problem with working with array in php what happens, I have the following code:

function AddRows() {
        var campos_max = 10;
        var x = 0;
        $('#add-row-fixe').click(function (e) {
            e.preventDefault();
            if (x < campos_max) {
                $('#new-row').append('<div id="new-row" class="row-f new-row">\
                <div class="row-m">\
                    <div class="row-m">\
                        <label>\
                            Tipo de telefone\
                        </label>\
                        <input value="Telefone Fixo" type="text" disabled/>\
                        <input name="tipo_tel[]" value="fixo" type="hidden"/>\
                    </div>\
                    <div class="row-m">\
                        <label>\
                            DDD\
                        </label>\
                        <select name="dd_tel[]" data-number="0">\
                            <option value="11">11</option>\
                        </select>\
                    </div> \
                </div>\
                <div class="row-m">\
                    <div class="row-m">\
                        <label>\
                            Telefone\
                        </label>\
                        <input min="1" name="fone_tel[]" type="number" class="inpt-null"/>\
                    </div>\
                    <div class="row-m">\
                        <label>\
                            Ramal\
                        </label>\
                        <input min="1" max="500" name="ramal_tel[]" type="number" class="inpt-null"/>\
                    </div>\
                </div>\
                <a class="btn-danger btn-default remove-row"><span class="lnr lnr-cross"></span> Remover</a>\
            </div>\
            ');
                x++;
            }
        });

        $('#add-row-phone').click(function (e) {
            e.preventDefault();
            if (x < campos_max) {
                $('#new-row').append('<div id="new-row" class="row-f new-row">\
                <div class="row-m">\
                    <div class="row-m">\
                        <label>\
                            Tipo de telefone\
                        </label>\
                        <input value="Telefone Celular" type="text" disabled/>\
                        <input name="tipo_tel[]" value="celular" type="hidden"/>\
                    </div>\
                    <div class="row-m">\
                        <label>\
                            DDD\
                        </label>\
                        <select name="dd_tel[]" data-number="0">\
                            <option value="11">11</option>\
                        </select>\
                    </div> \
                </div>\
                <div class="row-m">\
                    <div class="row-m">\
                        <label>\
                            Telefone\
                        </label>\
                        <input min="1" name="fone_tel[]" type="number" class="inpt-null"/>\
                    </div>\
                    <div class="row-m">\
                        <label>\
                            Ramal\
                        </label>\
                         <input value="" type="text" disabled/>\
                         <input name="ramal_tel[' + x + ']" type="hidden"/>\
                    </div>\
                </div>\
                <a class="btn-danger btn-default remove-row"><span class="lnr lnr-cross"></span> Remover</a>\
                </div>\
            ');
                x++;
            }
        });
        $('#new-row').on("click", ".remove-row", function (e) {
            e.preventDefault();
            $(this).parent('div').remove();
            x--;
        });

    }
    AddRows();

This guy gets me to add and remove new phone lines, landline or cell phone!

Now this is the PHP code that receives and handles this data going ajax:

$data = filter_input_array(INPUT_POST, FILTER_DEFAULT);
$PhoneArr = array();
        $PhoneArr['tipo_tel'] = $data['tipo_tel'];
        $PhoneArr['dd_tel'] = $data['dd_tel'];
        $PhoneArr['fone_tel'] = $data['fone_tel'];
        $PhoneArr['ramal_tel'] = $data['ramal_tel'];

        $dataPhone = array();
        $dataPhoneCount = count($PhoneArr['tipo_tel']);
        $dataPhoneKeys = array_keys($PhoneArr);

        for ($i = 0; $i < $dataPhoneCount; $i++):
            foreach ($dataPhoneKeys as $Keys):
                $dataPhone[$i][$Keys] = $PhoneArr[$Keys][$i];
            endforeach;
        endfor;


        foreach ($dataPhone as $dat):
            extract($dat);
            if ($tipo_tel === 'celular'):
                if (!preg_match('/^[0-9]{9}$/', $fone_tel)):
                    echo 'Verifique o telefone celular ' . $fone_tel;
                endif;
            endif;
            if ($tipo_tel === 'fixo'):
                if (!preg_match('/^[0-9]{8}$/', $fone_tel)):
                    echo 'Verifique o telefone comercial ' . $fone_tel;
                endif;
            endif;
            var_dump($dat);
        endforeach;

When I do a submit the first time for example on 3 phone lines it returns me or error, but when I click the remove button for example the 1 line, it returns me this error Undefined offset: 1 and the line number is just this guy here: $dataPhone[$i][$Keys] = $PhoneArr[$Keys][$i]; . Anybody here? Help?