Uploading More than 1000 Image

User select multiple transaction like the picture below and then upload 5 image so per transaction X 5 if they select 1000 transaction its equivalent of 5000 image. My problem is I get a error “Maximum execution time of 30 seconds exceeded”, I resolve it by editing php.ini and put this max_execution_time = 3000, but still I get a error.

here's my code in uploading

                $.ajax({
                    type: 'PUT',
                    url: "{{ url(config('laraadmin.adminRoute') . '/update_occ_multi') }}",
                    data: data_value,
                    dataType: "json",
                    success: function (data) {
                        success(output);
                        var html = '<div class="alert '+data.status+'" role="alert" id="alert-show"><button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>'+data.msg+'</div>';
                        $('#success_message').fadeIn().html(html);
                        setTimeout(function(){
                            $('#success_message').fadeOut(1000);
                        }, 5000);
                    },
                });