BBCode to html function

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I have a function that converts bbcode to html and it works as ewxpected exceot i'm getting too many <br /> in there.  I can see why this is but it is causing problems with output.

 

I want to float my images, but becuase there is a break on every line, the images are floating but i'm getting empty breaks

<img src="http://www.blackdownenvironmental.co.uk/images/home.jpg" alt="home.jpg" class="imgright" /><br />

<img src="http://www.blackdownenvironmental.co.uk/images/home-2.jpg" alt="home-2.jpg" class="imgright" /><br />

<img src="http://www.blackdownenvironmental.co.uk/images/home-3.jpg" alt="home-3.jpg" class="imgright" /><br />

<img src="http://www.blackdownenvironmental.co.uk/images/home-4.jpg" alt="home-4.jpg" class="imgright" /><br />

 

Is there a way i can select where to use nl2br usch as all content that hasn't got bbcode tags?

 

function BBCode($Text) {
// Replace any html brackets with HTML Entities to prevent executing HTML or script
// Don't use strip_tags here because it breaks [ url ] search by replacing & with amp
$Text = str_replace("<", "<", $Text);
$Text = str_replace(">", ">", $Text);

// Convert new line chars to html <br /> tags
$Text = nl2br($Text);

// Set up the parameters for a URL search string
$URLSearchString = " a-zA-Z0-9\:\/\-\?\&\.\=\_\~\#\'";
// Set up the parameters for a MAIL search string
$MAILSearchString = $URLSearchString . " a-zA-Z0-9\.@";

// Perform URL Search
$Text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/", '<a href="$1" target="_blank">$1</a>', $Text);
$Text = preg_replace("(\[url\=([$URLSearchString]*)\](.+?)\[/url\])", '<a href="$1" target="_blank">$2</a>', $Text);
//$Text = preg_replace("(\[url\=([$URLSearchString]*)\]([$URLSearchString]*)\[/url\])", '<a href="$1" target="_blank">$2</a>', $Text);

// Perform MAIL Search
$Text = preg_replace("(\[mail\]([$MAILSearchString]*)\[/mail\])", '<a href="mailto:$1">$1</a>', $Text);
$Text = preg_replace("/\[mail\=([$MAILSearchString]*)\](.+?)\[\/mail\]/", '<a href="mailto:$1">$2</a>', $Text);

// Check for bold text
$Text = preg_replace("(\[b\](.+?)\[\/b])is",'<span class="bold">$1</span>',$Text);

// Check for Italics text
$Text = preg_replace("(\[i\](.+?)\[\/i\])is",'<span class="italics">$1</span>',$Text);

// Check for Underline text
$Text = preg_replace("(\[u\](.+?)\[\/u\])is",'<span class="underline">$1</span>',$Text);

// Check for strike-through text
$Text = preg_replace("(\[s\](.+?)\[\/s\])is",'<span class="strikethrough">$1</span>',$Text);

// Check for over-line text
$Text = preg_replace("(\[o\](.+?)\[\/o\])is",'<span class="overline">$1</span>',$Text);

// Check for colored text
$Text = preg_replace("(\[color=(.+?)\](.+?)\[\/color\])is","<span style=\"color: $1\">$2</span>",$Text);

// Check for sized text
$Text = preg_replace("(\[size=(.+?)\](.+?)\[\/size\])is","<span style=\"font-size: $1\">$2</span>",$Text);

// Check for list text
$Text = preg_replace("/\[list\](.+?)\[\/list\]/is", '<ul class="list">$1</ul>' ,$Text);
$Text = preg_replace("/\[list=1\](.+?)\[\/list\]/is", '<ul class="listdecimal">$1</ul>' ,$Text);
$Text = preg_replace("/\[list=i\](.+?)\[\/list\]/s", '<ul class="listlowerroman">$1</ul>' ,$Text);
$Text = preg_replace("/\[list=I\](.+?)\[\/list\]/s", '<ul class="listupperroman">$1</ul>' ,$Text);
$Text = preg_replace("/\[list=a\](.+?)\[\/list\]/s", '<ul class="listloweralpha">$1</ul>' ,$Text);
$Text = preg_replace("/\[list=A\](.+?)\[\/list\]/s", '<ul class="listupperalpha">$1</ul>' ,$Text);
$Text = str_replace("[*]", "<li>", $Text);

// Check for font change text
$Text = preg_replace("(\[font=(.+?)\](.+?)\[\/font\])","<span style=\"font-family: $1;\">$2</span>",$Text);

// Images
// [img=pathtoimage]
$Text = preg_replace("/\[img\](.+?)\[\/img\]/", '<img src="$1" class="imgright" />', $Text);

// [img=widthxheight]image source[/img]
$Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.+?)\[\/img\]/", '<img src="$3" height="$2" width="$1">', $Text);

   return $Text;
}