CODEWITHSUNDEEP
phpjavascript
Loren Zimmer
Loren Zimmer

Reputation: 480

Variable between php and Javascript

code:

<?php

    mysql_connect("localhost", "bikemap", "pedalhard") or die(mysql_error()); 
    mysql_select_db("test") or die(mysql_error()); 
    $data = mysql_query("SELECT * FROM gpsdata");     
    $aData = array();
    while($row = mysql_fetch_assoc($data))
        $aData[$row['idgpsdata']] = array($row);
        $json = json_encode($aData);
?>

    var json = "<?php echo $json; ?>";
    document.write(json.length);
    alert('half done');

    for(var x=0; x < json.length; x++) {
        document.write("<li>"+ x + " " + json[x]+ "</li>");
    }

Output of the code:

20

0 <
1 ?
2 p
3 h
4 p
5
6 e
7 c
8 h
9 o
10
11 $
12 j
13 s
14 o
15 n
16 ;
17
18 ?
19 >

if you take out the line numbers is: "<?php echo $json; ?>"

Looks suspiciously like a line where I'm trying to transfer the php variable $json to javascript variable json.

I've tried every type of bracketry and quote to get this to work. Anyone see any mistakes or have any suggestions?

Upvotes: 0

Views: 1879

Answers (3)

Naypa
Naypa

Reputation: 172

Try

var json = {<?php echo $json; ?>};

or maybe

var json = eval("{<?php echo $json; ?>}");

Be sure your code is interpreted as php by the server. The file extension '.js' is usually not configured in this way.

If you want to embed your php file as a js, you'd better to rename it as .php and add the required header like that :

<?php
header("Content-type","text/javascript");
?>

var json = {<?php echo $json; ?>};

Upvotes: 1

Arfeen
Arfeen

Reputation: 2623

You could do it other way, that is, put your javascript inside php:

echo "<script>
var json = $json; 
document.write(json.length);
alert('half done');

for(var x=0; x < json.length; x++) {
    document.write(\"<li>\"+ x + \" \" + json[x]+ \"</li>\");
}
</script>";

Upvotes: 0

James Anderson
James Anderson

Reputation: 27486

You could try:-

var json = <? echo $json ?>;

You cannot execute php code inside the Javascript. Instead you must get php to write the relevent javascript code;

Upvotes: 0

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