Php if empty variable statement - php

Question

I'm trying to build an if statement for when a variable is filled with a url it will display a button and link to the site, and when the variable is empty the link and button will not display. So far I got it to where it is displays the button and links but making it into an if statement keeps on breaking my site. If you see a problem with the code below, please help. Thanks
<div id="social_icon">
<?php if (isset($fburl))
{
<a href="<?php echo $options['fburl']; ?>">
<img src="http://farm6.staticflickr.com/5534/9135106179_43deba3d15_o.png"" width="30"
height="30"></a>;
}
else
{
//dont show anything
}
?>
</div>

Answer 1

You're trying to use HTML within your PHP code, so PHP sees this as an unexpected variable/string. Either use echo for this, or close the PHP statement, and then write your HTML.
Either:
<div id="social_icon">
<?php if(isset($fburl)){ ?>
<a href="<?php echo $options['fburl']; ?>">
<img src="http://farm6.staticflickr.com/5534/9135106179_43deba3d15_o.png" width="30" height="30" />
</a>
<?php }else{
//dont show anything
} ?>
</div>
Or:
<div id="social_icon">
<?php if (isset($fburl)){
echo '<img src="http://farm6.staticflickr.com/5534/9135106179_43deba3d15_o.png" width="30" height="30" />';
}else{
//dont show anything
} ?>
</div>
Edit
Actually, I would assume it's not outputting anything because your if statement is checking for $fburl whereas you're echoing the link as $options['fburl']. If the facebook url is located at $options['fburl'], try:
<div id="social_icon">
<?php if(isset($options['fburl'])){ ?>
<a href="<?php echo $options['fburl']; ?>">
<img src="http://farm6.staticflickr.com/5534/9135106179_43deba3d15_o.png" width="30" height="30" />
</a>
<?php }else{
//dont show anything
} ?>
</div>
Edit 2
If the options are set but don't contain a link, you will also need check for that:
<div id="social_icon">
<?php if(isset($options['fburl']) && !empty($options['fburl'])){ ?>
<a href="<?php echo $options['fburl']; ?>">
<img src="http://farm6.staticflickr.com/5534/9135106179_43deba3d15_o.png" width="30" height="30" />
</a>
<?php }else{
//dont show anything
} ?>
</div>

Answer 2

Syntax error, change it to:
<?php if (isset($fburl))
{
//missed end tag here
?>
<a href="<?php echo $options['fburl']; ?>">
<img src="http://farm6.staticflickr.com/5534/9135106179_43deba3d15_o.png"" width="30"
height="30"></a>;
<?php
//add another php start tag
}
else
{
//dont show anything
}
?>