PHP语法错误，折腾一天了，求高手帮忙。
我写一个无限级分类下拉功能，到下面这个代码老是报错，折腾一天了，求高手看看。
$str_select.= "<option value=" .$row['classid'] if ($classid == $row['classid']){ echo "selected"}.">" .str_repeat( "-" ,$depth) . $row['classname']."</option>"; //字符串构建错误提示：Parse error: syntax error, unexpected T_IF
回复讨论(解决方案)
求高手帮忙11！
$str_select .= ""; //字符串构建
参考楼上,话说你分开写好了,容易知道错哪
建?不要?在同一行。
如果一定要可以???
$str_select.= "<option value='" .$row['classid']."' ".($classid==$row['classid']? "selected" : "").">" .str_repeat( "-" ,$depth) . $row['classname']."</option>"; //字符串构建
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