I want to have a javascript array of "country" objects which at this stage will have only two attributes: name, and geonameId.
I get these countries from a database like so:
$sql = "SELECT name, geonameId FROM countryinfo";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
$rows = array ();
while($row = $result->fetch_assoc()) {
$country["geonameId"]);
$rows[$row['geonameId']] = $row['name'];
}
}
$conn->close();
?>
I then have this javascript script which turns the php array into a javascript one:
<script type="text/javascript">
var allCountries = <? echo json_encode($rows); ?>;
console.log(allCountries);
</script>
I just want to turn that array of key/value pairs into an array of objects so I have easier access to new attributes that I may add in the future. At the moment the javascript array logs to the console like this:
Object {0: "Netherlands Antilles", 49518: "Rwanda", 51537: "Somalia", 69543: "Yemen", 99237: "Iraq", 102358: "Saudi Arabia", 130758: "Iran", 146669: "Cyprus", 149590: "Tanzania", 163843: "Syria", 174982: "Armenia", 192950: "Kenya", 203312:...
How do I convert that array of key/value pairs to an array from javascript objects (with refactoring, I will be adding a Country class and the array will contain Country objects).
My relevant code was changed to this to get it to work:
$sql = "SELECT name, geonameId FROM countryinfo";
$result = $conn->query($sql);
$allCountries = [];
if ($result->num_rows > 0) {
$rows = array ();
while($row = $result->fetch_assoc()) {
$country = array(
"name" => $row['name'],
"geonameId" => $row['geonameId']
);
$allCountries[] = $country;
}
}
$conn->close();
?>
<script type="text/javascript">
var allCountries = <?php echo json_encode($allCountries, JSON_PRETTY_PRINT) ?>;
console.log(allCountries)
</script>
在PHP端简单地序列化为JSON,然后在Javascript中执行JSON.parse
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