Each expression in each comment added to the database is expressed in a special character, such as "[Face1]" represents a smiley face, "[Face2]" represents a sad expression. Just, when this comment is displayed, the special characters of all the expressions in the comments are replaced with the corresponding pictures.
| The code is as follows |
Copy Code |
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<?php
/**
* Comment Add expression--insert emoticons at cursor (www.111cn.net)
*/
$content = isset ($_post["content")? $_post["Content"]: ';
if (!empty ($content))
{
for ($i = 1; $i <= $i + +)
{
$content = Str_replace (' face '. $i. '] ', ' ', $content); Replace special characters with picture display (also available as regular substitutions, but are said to be inefficient)
}
Echo ' The content you entered is: '. $content. ' <br/> ';
}
?>
<script type= "Text/javascript" >
Inserts a picture character JS at the cursor
function Addexpression (MyField, myvalue)
{
MyField = document.getElementById (MyField);
Ie
if (document.selection)
{
Myfield.focus ();
sel = Document.selection.createRange ();
MyValue = "[Face" +myvalue+ "]";
Sel.text = myvalue;
Sel.select ();
}
Mozilla
else if (Myfield.selectionstart | | myfield.selectionstart = = ' 0 ')
{
var startpos = Myfield.selectionstart;
var endpos = myfield.selectionend;
Save ScrollTop before insert
var restoretop = myfield.scrolltop;
MyValue = "[Face" +myvalue+ "]";
Myfield.value = myField.value.substring (0, startpos) + myvalue + myField.value.substring (endpos,myfield.value.length) ;
if (Restoretop > 0)
{
Restore previous ScrollTop
Myfield.scrolltop = Restoretop;
}
Myfield.focus ();
Myfield.selectionstart = Startpos + myvalue.length;
Myfield.selectionend = Startpos + myvalue.length;
}
Else
{
Myfield.value + = myvalue;
Myfield.focus ();
}
}
</script>
<br/><p/>
<br/>
<form action= "" method= "POST" >
<textarea name= "Content" id= "content" ></textarea>
<input type= "Submit" value= "submitted"/>
</form>
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