PHP variables in javascript issue

Question

I created JavaScript validation into which PHP variables are passed.

onblur="<?= "proveriPolje(this, {$validate['txtUlica']['options']['regexp']}, '{$greske['txtUlica']}', '{$def['txtUlica']}')"; ?>"

But when trying to verify the PHP variables are set before passing them to the JavaScript with this:

  onblur="<?= "proveriPolje(this, isset({$validate['txtUlica']['options']['regexp']}, '{$greske['txtUlica']})', 'isset({$def['txtUlica']}'))"; ?>"

The isset() function is parsed as string, could someone help me with this complex situation?

isset return true/false, so it's used for if normally, what you want to do? — Marco Mura
– Marco Mura, Commented Dec 4, 2014 at 13:01
AIUI you're trying to ensure that the PHP vars are set before passing them to JS? — CD001
– CD001, Commented Dec 4, 2014 at 13:22

CD001 · Accepted Answer · 2014-12-04 14:10:29Z

1

Looking at it as a raw PHP string your problem is here:

"proveriPolje(this, isset({$validate['txtUlica']['options']['regexp']},

Using { to break out of the string is in the wrong place and it won't work for functions anyway essentially you're just writing "isset" as part of the output string - try something like this (which should pass an empty string to the JS if the PHP isn't set):

onblur="<?= "proveriPolje(this, " 
    . "'" . ( isset($validate['txtUlica']['options']['regexp']) ? $validate['txtUlica']['options']['regexp'] : "" ) . "'"
    . ", '{$greske['txtUlica']}', "
    . "'" . ( isset($def['txtUlica']) ? $def['txtUlica'] : "" ) . "'"
    . ")"; ?>"

Ugly as sin but it should work.

You should end up with the JavaScript function call looking something like:

proveriPolje(this, 'DATA FROM PHP VAR', 'DATA FROM PHP VAR', 'DATA FROM PHP VAR')

edited Dec 4, 2014 at 14:10

answered Dec 4, 2014 at 13:33

CD001

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1 Comment

CD001 Over a year ago

Updated - I'd lost track of the brackets ... I've also added ' marks around the first parameter

Jerodev · Accepted Answer · 2014-12-04 13:01:49Z

0

You have to put your php tags around the variables. php can not know what this javascript function should do.

onblur="proveriPolje(this, {<?= $validate['txtUlica']['options']['regexp'] ?>}, '{<?= $greske['txtUlica'] ?>}', '{<?= $def['txtUlica'] ?>}')"; ?>"

answered Dec 4, 2014 at 13:01

Jerodev

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2 Comments

Vladimir Štus Over a year ago

problem is proveriPolje() is javascript function this whole code is in javascript, in your way function is in php

Jerodev Over a year ago

No it is not, The <?= and ?> make sure that only the variables are seen as php code. The function shouldn't be between php tags otherwise the function is seen as php code.

Dániel Sebestyén · Accepted Answer · 2014-12-04 13:02:48Z

0

eval()? Or simple echo? Since you dont print it this is just a string Btw is this a file, processed by php or a single html? I know its a dumb question but I have just saw a qiestion where the code was ran from html and that was the origin of the problem.

answered Dec 4, 2014 at 13:02

Dániel Sebestyén

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4 Comments

Jerodev Over a year ago

<?= ?> echoes the variable between the tags. :)

Dániel Sebestyén Over a year ago

And is this short tag enabled on the server?

Ares Draguna Over a year ago

this is set by default on the server for the new PHP version... you don't need to specify this

Dániel Sebestyén Over a year ago

Quite strange style... Anyway didnt you missed the concatenation dot? Or this style does not need it?

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