sending json from php to javascript

Question

I have a php variable which contain json, I use json_encode to transform an array to json.

If I print my var I have:

["L","M","M","J","V","S","D"]

But if I use my var in js I have:

[&quot;L&quot;,&quot;M&quot;,&quot;M&quot;,&quot;J&quot;,&quot;V&quot;,&quot;S&quot;,&quot;D&quot;]

and I can't parse because I have an error

Uncaught SyntaxError: Unexpected token &

Is there a way to get json in my js ?

Thanks

Edit:

In php

$dayArray = array('L','M','M','J','V','S','D'); $dayArray = json_encode($dayArray)

In js

setDayArray('<?php echo $dayArray ?>'); setDayArray = function(dayArray){ console.log(dayArray); }

With twig

calendar.setDayArray({{ dayArray }});

This is maybe due to symfony rendering, the only way I found is to do an ajax call using json header

@BadWolf: That's a very bad idea. Yes, don't use htmlentities. No, don't just output it directly. — T.J. Crowder
– T.J. Crowder, Commented Jul 25, 2013 at 21:28
setDayArray('<?php $dayArray ?>'). That's your problem right there, you have to echo it out. — elclanrs
– elclanrs, Commented Jul 25, 2013 at 21:31

Community · Accepted Answer · 2023-11-17 20:29:45Z

To output JSON in PHP, output the result of passing your PHP structure through json_encode.

Example from the documentation:

<?php $arr = array('a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5); echo json_encode($arr); ?>

Outputs:

{"a":1,"b":2,"c":3,"d":4,"e":5}

Re your updated question, you've used

$dayArray = json_encode($dayArray) setDayArray('<?php $dayArray ?>'); // Wrong

Get rid of the quotes, and include echo unless it's magically getting output some other way:

$dayArray = json_encode($dayArray) setDayArray(<?php echo $dayArray ?>); // Right

When you do that, the browser will see something like:

setDayArray(["L","M","M","J","V","S","D"]); // Right

rather than

setDayArray('["L","M","M","J","V","S","D"]'); // Wrong

Ajouve · Accepted Answer · 2013-09-08 22:24:51Z

1

I find the solution

calendar.setDayArray({{ dayArray | raw }});

use raw to allow html

answered Sep 8, 2013 at 22:24

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