ohctech_p8/chart_monthly_injury.php

<?php
// include('includes/config/config.php');
// include('includes/functions.php');
$xaxis = array();

$date = date("Y-m-d");

$default_start_date = date('Y-m-d', strtotime($date . ' -7 days'));

$default_end_date =  date('Y-m-d', strtotime($date));

error_log("date ." . $default_start_date . "  " . $default_end_date);

if (!empty($_POST['start_date'])) {
	$default_start_date = date('Y-m-d', strtotime($_POST['start_date']));
}
if (!empty($_POST['end_date'])) {
	$default_end_date = date('Y-m-d', strtotime($_POST['end_date']));
}

error_log("date after filter ." . $default_start_date . "  " . $default_end_date);

$total_injury_class_name = array();
$total_injury_class = array();

$sql = "select * from injury_class";
$result = mysqli_query($conn, $sql);
while ($row = mysqli_fetch_assoc($result)) {
	array_push($total_injury_class_name, '"' . $row['inj_class_name'] . '"');
	array_push($total_injury_class, $row['inj_class_id']);
}

error_log("total injury " . print_r($total_injury_class, true));

$injury_data = array();
$date_data = array();
for ($i = 0; $i < count($total_injury_class); $i++) {
	$query = "select count(appointment_id) from employee_appointment where date(appointment_date) >= '" . $default_start_date . "' and  date(appointment_date) <= '" . $default_end_date . "' and 
	injury_classes_new ='" . $total_injury_class[$i] . "' or injury_classes_new like '%," . $total_injury_class[$i] . "' or injury_classes_new like '" . $total_injury_class[$i] . ",%' or injury_classes_new like '%," . $total_injury_class[$i] . ",%' ";
	error_log(" injury query " . $query);

	if (!$result = @mysqli_query($conn, $query)) {
		error_log("error in injury chart" . mysqli_error($conn));
		die();
	}
	if (mysqli_num_rows($result) > 0) {
		while ($row = @mysqli_fetch_array($result)) {
			array_push($injury_data, $row[0]);
			// array_push($date_data, $row[1]);
		}
	} else {
		array_push($injury_data, 0);
	}
}
error_log("injury classification data trend " . print_r($injury_data, true));
?>


<script>
	var ctx = document.getElementById('chart_monthly_injury').getContext('2d');
	var chartData = [<?php echo join(',', $injury_data); ?>];
	var xaxis = [<?php echo join(',', $total_injury_class_name); ?>];
	// var label = [<?php echo join(',', $date_data); ?>];

	var colors = [];
	for (var i = 0; i < chartData.length; i++) {
		colors.push("#" + Math.floor(Math.random() * 16777215).toString(16));
	}
	var dataset = [];
	// for (var i = 0; i < chartData.length; i++) {
	dataset.push({
		label: "count",
		data: chartData,
		borderColor: colors,
		backgroundColor: colors,
		fill: false,
	});
	// }

	var data = {
		labels: xaxis,
		datasets: dataset
	}
	var myChart = new Chart(ctx, {
		type: 'horizontalBar',
		data: data,
		options: {
			legend: {
				display: false
			},
			scales: {
				xAxes: [{
					ticks: {
						beginAtZero: true,
						precision: 0,
					}
				}]
			}
		}
	});
</script>