How to assign a PHP variable to a JavaScript variable inside JavaScript code? The whole file is PHP though

Question

-------------php code ends here-------------

<script type="text/javascript">
    var e = <?php echo $tweetText; ?>; 
    var f = twemoji.parse(e);
    document.write(f);
</script>

-------------php code starts here-------------

If I put single quotes or double quotes before and after then it matches any ' or " inside the tweetText and doesn't let the string print to screen.

possible duplicate of How to assign Php variable value to Javascript variable? — Rizier123
– Rizier123, Commented Feb 24, 2015 at 15:47
Well you have to quote that string, but I can assure that you will need to more than just echo out the tweet. There will be quotes and junk in there that will cause JavaScript errors. — Halfstop
– Halfstop, Commented Feb 24, 2015 at 15:47
you should use json_encode php function. See here stackoverflow.com/questions/168214/… — Vivek Vaghela
– Vivek Vaghela, Commented Feb 24, 2015 at 15:49

developppper · Accepted Answer · 2015-02-24 15:56:55Z

0

This solution works fine, just add ,,addslashes" to escape quotes

<script type="text/javascript">
    var e = '<?php echo addslashes($tweetText); ?>'; 
    var f = twemoji.parse(e);
    document.write(f);
</script>

answered Feb 24, 2015 at 15:56

developppper

24

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2 Comments

Halfstop Over a year ago

And what if the string has a double-quote in it? It would come out as var e = 'He said, \"Yes, that\'s it.\"';

Halfstop Over a year ago

Have fun removing slashes in your code. This is not the correct solution to your problem.

developppper · Accepted Answer · 2015-02-24 15:51:16Z

0

<script type="text/javascript">
    var e = '<?php echo $tweetText; ?>'; 
    var f = twemoji.parse(e);
    document.write(f);
</script>

That's it

answered Feb 24, 2015 at 15:51

developppper

24

4 Comments

Halfstop Over a year ago

And if the Tweet looks like this: I love that you're a Leo.

developppper Over a year ago

can you explain your comment please @Halfstop?

developppper Over a year ago

I tried and this works fine, I don't understend what is the problem and why I get minus?

Halfstop Over a year ago

Does this look like valid JS? var e = 'I love that you're a Lew.';

Halfstop · Accepted Answer · 2015-02-24 16:32:19Z

0

The best way to do this would be with json_encode as @vivek said in a comment.

<script type="text/javascript">
var e = <?php echo json_encode($tweetText); ?>;
var f = twemoji.parse(e);
document.write(f);
</script>

answered Feb 24, 2015 at 16:32

Halfstop

1,7821 gold badge20 silver badges38 bronze badges

Comments

Balázs Varga · Accepted Answer · 2015-02-24 15:48:57Z

-1

Try to put the whole string inside doublequotes, then escape the same - double quotes - inside the javascript string, with a simple str function:

<script type="text/javascript">
var e = "<?php echo str_replace('"','\"',$tweetText); ?>"; 
var f = twemoji.parse(e);
document.write(f);
</script>

answered Feb 24, 2015 at 15:48

Balázs Varga

1,8662 gold badges17 silver badges34 bronze badges

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