Array
(
[0] => Array
(
[sno] => 1
[name] => Sivamani
[contact] => 750241378
[$city] => Madurai
)
)
Array
(
[1] => Array
(
[sno] => 2
[name] => Guru
[contact] => 1111111111
[$city] => Chennai
)
)
this is my php print_r array how can i get the array length and loop these to print in javascript
The best way is json_encode.
PHP > JS:
echo json_encode($array);
in JS:
var array = phpString;
Basically, in PHP, while generating the page, add this:
echo '<script type="text/javascript"> var phpArray = <?= json_encode($yourArray);?>;</script>';
And your PHP array will be made available as a global (evil) variable... you could just as well echo the value in a JS module, and expose it in a more controlled way... but google that for more details...
Anyway, after you've done this:
console.log(phpArray.length);
for (var i=0;i<phpArray.length;i++)
{
//assoc arrays are objects in JS, hence:
for(var j in phpArray[i])
{
if (phpArray[i].hasOwnProperty(j))
{
console.log(j + ' => ' + phpArray[i][j]);
}
}
}
JSON.parse on client side? The JSON-encoded data should be a valid object literal anyway.
var array = JSON.parse('<?php echo javascript_string_escape(json_encode($phpArray)); ?>'); for correct result. Directly doing var a = <?php echo json_encode($phpArray); ?>; is correct by accident in the php json_encode default configuration because of the default unicode escaping.echo-ed from PHP into JS directly for years. Instead I always use ajax, so it's become a habbit of wrapping all data coming from the server in a JSON.parse call. But I fully understand what my mistake is/was...JSON.parse is more robust provided you understood to additionally escape for javascript strings.You can use console.log to print to the console: (this is for debugging)
var a = [1, 2, 3];
console.log(a); // [1, 2, 3]
If you want to string an array/object you can use JSON.stringify: (this is a good way to transfer data from frontend to backend)
var a = [1, 2, 3];
JSON.stringify(a); // "[1, 2, 3]"
Also if you want to prettify the stringification you can use the 3. arguments to JSON.stringify:
JSON.stringify(obj, handler, spaces);
JSON.stringify([1, 2, 3], null, "\t");
JSON.stringify([1, 2, 3], null, " ");
JSON.stringify([1, 2, 3], null, 2);
Try this:
var data = new Object();
data["firstname"] = "John";
data["lastname"] = "Bhutt";
data["age"] = 29;
alert(data.toSource()); //Will return "({firstname:"John", lastname:"Smith", age:21})"
I am using the PHP json_encode function instead. So your code should be like:
echo json_encode($YOUR_ARRAY);
On the client side you should parse the string and you will get your array. I usually use jQuery for that. Requesting something by AJAX can look like:
$.post(SCRIPT_URL, POST_PARAMS,
function(response) {
// YOUR ACTIONS HERE - response is your parsed ARRAY
},
'json'
);
You can find details about jQuery.post method here.
json_encode