PHP if. elseif.else 有关问题 -PHP Tutorial-php.cn

PHP if.. elseif...else 问题

本帖最后由 xytianshiwx 于 2013-12-08 10:09:44 编辑

    <br />
<?php<br />
 $field_func="COUNT|AVG|FIRST|LAST|MAX|MIN|SUM|TOP";<br />
 $where_field="Where|or|xor|and|in";<br />
 $param="name";<br />
 $sql_param_list=array();<br />
 if(false!==strpos($param,",")){//判断是否存在“,”<br />
     	    $sql_param_list["field"] = $param;<br />
     	}else{<br />
			 if(preg_match("/\b(".strtolower($field_func).")\b\((\*|[a-zA-Z_`])+\)/i", $param)){<br />
			     	       $sql_param_list["field"] =$param;<br />
			     	    }elseif(preg_match("/\b(".$where_field.")\b/i", $param)||preg_match("/(>|>|=)/i", $param)){//判断where<br />
			     	    	$sql_param_list["where"] =$param;<br />
			     	    	<br />
			     	    }elseif(preg_match("/\b(order|limit|group|)\b/i", $param,$param_name)){//判断order|limit|group<br />
			     	         switch ($param_name[0]){<br />
			     	           case "order" : $sql_param_list["order"] =$param;<br />
			     	           break;<br />
			     	           case "limit" : $sql_param_list["limit"] =$param;<br />
			     	           break;<br />
			     	           case "group" : $sql_param_list["group"] =$param;<br />
			     	           break;<br />
			     	          <br />
			     	         }<br />
			     	    }else{<br />
			     	       $sql_param_list["field"] =$param;<br />
			     	    }<br />
     	}	    <br />
     	print_r($sql_param_list);<br />
<br />

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$param 没有赋值个$sql_param_list["field"]？？
逻辑错误还是其他错误，请高手指点指点！！！

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