Create A Simple Html Editor With Php And Javascript

<?php
//First we need to create a function to take out php
function clearPHP()
{
//First we must get the content from the form.
$data=$_POST['contents'];
//Ok we have a variable containing the contents.
//Now we need to replace all php tags
$data=str_replace("<?php","<!--",$data);
//We are going to package all php as html comments
$data=str_replace("?>","-->",$data);
//Our main function is finished
}
//Ok we need to start our file creator
$fName=$_POST['file'];
$fContents=clearPHP();
//We have our information ready to be implanted
$file=fopen($fName,'w+');
//We have created the file
//Now we need to write to the file
chmod($file,0777);
fwrite($file,$fContents);
//Ok close the file
fclose($file);
?>

&lt;script type="text/javascript">
//We need to start our bold function
function addBold()
{
var current=document.editor.contents.value
//Next add a bold tag
document.editor.contents.value=current+"<b></b>"
}
//Now add our italic function
function addItalic()
{
var current=document.editor.contents.value
document.editor.contents.value=current+"<i></i>"
}
//Now our underline function
function addUnder()
{
var current=document.editor.contents.value
document.editor.contents.value=current+"<u></u>"
}
//Now our anchor tag
//This is more complex than the others
function addLink()
{
var link=prompt("URL of Link","http://")
var title=prompt("Name of Link",link)
//We have the values for our tag
//Lets add the tag
var current=document.editor.contents.value
document.editor.contents.value=current+'<a href="'+link+'">'+title+'</a>'
}
//That ends the javascript
</script>

<form name="editor" action="save.php" method="post">
<input type="button" value="Bold" onclick="addBold()" /><input type="button" value="Italic" onclick="addItalic()" /><input type="button" value="Underline" onclick="addUnderline()" /><input type="button" value="Link" onclick="addLink()" />
<br />
<textarea name="contents" wrap="false" rows="25" columns="20">
</textarea>
<br />
<input type="submit" value="Save" />
</form>