how to pass these strings from php to javascript

Question

i have 4 strings in my application like this that i want to pass to my js file

$a1=\'[10,20,13,14]\';
$a2=\'[17,15,14,16]\';
$a3=\'[18,24,16,17]\';
$a4=\'[15         


        

Answer 1

Encode them as JSON.

On the PHP side:

echo json_encode(array("a1" => $a1, "a2" => $a2, "a3" => $a3, "a4" => $a4));

On the JavaScript side:

$.ajax({
    type: "POST",
    dataType: "json",
    url: "loaddata.php",
    success: function(data) {
        var a1=data.a1;
        var a2=data.a2;
        var a3=data.a3;
        var a4=data.a4;
        // do something with a1, a2, a3 and a4
    }
});

And if you want a1, a2, a3, and a4 to be arrays of numbers instead of strings containing numbers, just JSON decode the strings on the PHP side before sending them over:

echo json_encode(array(
    "a1" => json_decode($a1),
    "a2" => json_decode($a2),
    "a3" => json_decode($a3),
    "a4" => json_decode($a4)
));