You want to json_encode($json, JSON_FORCE_OBJECT).
The JSON_FORCE_OBJECT flag, as the name implies, forces the json output to be an object, even when it otherwise would normally be represented as an array.
You can also eliminate the use of array_push for some slightly cleaner code:
$json[] = ['ip' => $ip, 'port' => $port];
PHP Array to Json Object - Stack Overflow
Javascript Convert PHP Json into a javascript array - Stack Overflow
JSON PHP Array to Javascript - Stack Overflow
Convert php array to Javascript - Stack Overflow
When would I need to convert PHP array to JSON?
What PHP array features cannot be converted to JSON?
You want to json_encode($json, JSON_FORCE_OBJECT).
The JSON_FORCE_OBJECT flag, as the name implies, forces the json output to be an object, even when it otherwise would normally be represented as an array.
You can also eliminate the use of array_push for some slightly cleaner code:
$json[] = ['ip' => $ip, 'port' => $port];
just use only
$response=array();
$response["0"]=array("ip" => "192.168.0.1",
"port" => "2016");
$json=json_encode($response,JSON_FORCE_OBJECT);
It sounds like you're retrieving a JSON string in JavaScript (perhaps via AJAX?). If you need to make this into an actual array value, you'd probably want to use JSON.parse().
var retrievedJSON = '["float","float","float","float"]'; // normally from AJAX
var myArray = JSON.parse(retrievedJSON);
If you're actually writing out a value into the page, rather than using AJAX, then you should be able to simply echo the output of json_encode directly, without quoting; JSON itself is valid JavaScript.
var myArray = <?php echo json_encode($myPhpArray); ?>;
var myArray = <?= json_encode($myPhpArray); ?>;
Pretty simple. ;-)
Example:
<?php
$myPhpArray = array('foo', 'bar', 'baz');
?>
<script type="text/javascript">
var myJsArray = <?= json_encode($myPhpArray); ?>;
</script>
Should output (view-source):
<script type="javascript">
var myJsArray = ["foo","bar","baz"];
</script>
Example
First you need a PHP file on a Apache server somewhere with PHP installed. Make a file like this:
localhost:8888/myfile.php
<?php
$arr = array ('a'=>1,'b'=>2,'c'=>3,'d'=>4,'e'=>5);
echo json_encode($arr); // {"a":1,"b":2,"c":3,"d":4,"e":5}
?>
Then your JavaScript (in this example I use jQuery):
$.getJSON('http://localhost:8888/myfile.php', function(data) {
console.log(data);
});
This should be a start to get PHP arrays in to your JavaScript.
As @Allendar said you can't embed PHP inside a JS file. You could, however, add a function in your JS file to load the JSON data, and then embed that data in a script tag in your PHP file.
example.js:
var loadJsonFromPHP = function(json) {
console.log(json);
}
example.php:
<?php
$data = array("some", "test", "data");
?>
<html>
<head>
<script src="example.js"></script>
<script>
loadJsonFromPHP(<?php echo json_encode($data) ?>);
</script>
</head>
<body></body>
</html>
Edit: this is assuming you only need to get the data into JS once at page load, in which case you can skip making AJAX requests.
I'm going to assume that the two arrays you've given for PHP and JS are not related, and they're just examples of how arrays look in the two languages. Clearly you're not going to be able to convert those sequences of letters and numbers into those city names.
PHP provides a function to convert PHP arrays into Javascript code: json_encode(). (technically, it's JSON format; JSON stands for JavaScript Object Notation)
Use it like this:
<script type='text/javascript'>
<?php
$php_array = array('abc','def','ghi');
$js_array = json_encode($php_array);
echo "var javascript_array = ". $js_array . ";\n";
?>
</script>
See also the manual page I linked above for more information.
Note that json_encode() is only available in PHP 5.2 and up, so if you're using an older version, you'll need to use an existing one -- the PHP manual page also includes comments with functions written by people who needed it. (but that said, if you're using anything older than PHP 5.2 you should upgrade ASAP)
Spudley's answer is fine.
Security Notice: The following should not be necessary any longer for you
If you don't have PHP 5.2 you can use something like this:
function js_str($s)
{
return '"' . addcslashes($s, "\0..\37\"\\") . '"';
}
function js_array($array)
{
$temp = array_map('js_str', $array);
return '[' . implode(',', $temp) . ']';
}
echo 'var cities = ', js_array($php_cities_array), ';';