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添加到数据库的每条评论中的每个表情都是以特殊的字符表示的，比如"[face1]"代表一个笑脸的表情，"[face2]"代表伤心的表情。只是，当这条评论在显示之前，对评论中的所有表情的特殊字符用对应的图片替换就行了
| 代码如下 |
复制代码 |
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<?php
/**
*评论添加表情--在光标处插入表情字符（www.111cn.net）
*/
$content = isset($_POST["content"]) ? $_POST["content"]: '';
if(!empty($content))
{
for($i = 1; $i <= 13; $i++)
{
$content = str_replace('[face' .$i. ']','<img src="IMAGES/' . $i . '.GIF"/>',$content); //将特殊字符替换为图片显示(也可用正则替换,不过据说正则效率不高)
}
echo '您输入的内容是：' . $content . '<br/>';
}
?>
<script type="text/javascript">
//在光标处插入图片字符JS
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/>
<img src="IMAGES/1.GIF" style="cursor:pointer" onclick="addExpression('content','1')"/>
<img src="IMAGES/2.GIF" style="cursor:pointer" onclick="addExpression('content','2')"/>
<img src="IMAGES/3.GIF" style="cursor:pointer" onclick="addExpression('content','3')"/>
<img src="IMAGES/4.GIF" style="cursor:pointer" onclick="addExpression('content','4')"/>
<img src="IMAGES/5.GIF" style="cursor:pointer" onclick="addExpression('content','5')"/>
<img src="IMAGES/6.GIF" style="cursor:pointer" onclick="addExpression('content','6')"/>
<img src="IMAGES/7.GIF" style="cursor:pointer" onclick="addExpression('content','7')"/>
<img src="IMAGES/8.GIF" style="cursor:pointer" onclick="addExpression('content','8')"/>
<img src="IMAGES/9.GIF" style="cursor:pointer" onclick="addExpression('content','9')"/>
<img src="IMAGES/10.GIF" style="cursor:pointer" onclick="addExpression('content','10')"/>
<img src="IMAGES/11.GIF" style="cursor:pointer" onclick="addExpression('content','11')"/>
<img src="IMAGES/12.GIF" style="cursor:pointer" onclick="addExpression('content','12')"/>
<img src="IMAGES/13.GIF" style="cursor:pointer" onclick="addExpression('content','13')"/>
<br/>
<form action="" method="post">
<textarea name="content" id="content"></textarea>
<input type="submit" value=" 提 交 "/>
</form>
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