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createMarker.php
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createMarker.php
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<?php
/**
* Create a new marker on supplied layer using supplied details.
*/
include 'login.php';
function die_error($c, $m) {
die('{success: false, errcode: ' . $c . ', message: "' . $m . '", id: 0}');
}
function echo_success($m, $id) {
echo '{success: true, errcode: 0, message: "' . $m . '", id:' . $id . '}';
}
/* Check if a layer with the given id exists. */
function check_layer($u, $lid) {
global $con;
$sql = "SELECT id FROM layer WHERE deleted_at IS NULL AND owner='$u' AND id=$lid LIMIT 1";
if (($temp = mysql_query($sql, $con))) {
if (mysql_num_rows($temp) > 0) {
return true;
} else {
return false;
}
} else {
die_error(-1, json_encode(mysql_error()));
}
}
/* Create a new marker on the supplied layer using the supplied details. */
function create_marker($u, $lid, $x, $y, $s, $l, $d) {
global $con;
$sql = "INSERT INTO 2Dmarker (owner, layer_id, x, y, scale, label, description, created_at) VALUES ('$u', '$lid', '$x', '$y', '$s', '$l', '$d', NOW())";
if (!mysql_query($sql, $con)) {
die_error(-2, json_encode(mysql_error()));
}
return mysql_insert_id();
}
$logged_in = checkLogin();
if (!$logged_in) {
header('Location: ngembryo.php');
} else {
/* Supplied by the client. */
$x = $_POST[x];
$y = $_POST[y];
$scale = $_POST[scale];
$label = return_well_formed($_POST[label]);
$description = return_well_formed($_POST[description]);
$lid = $_POST[lid];
$user = $_SESSION['username'];
if (check_layer($user, $lid)) {
$id = create_marker($user, $lid, $x, $y, $scale, $label, $description);
echo_success("New marker \'$label\' has been created.", $id);
} else {
die_error(-3, "Invalid layer.");
}
}
mysql_close($con);
?>