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PHP 正则匹配页面中 form 表单所有元素的类型及属性值

学习笔记马富天 2016-12-13 22:40:30 61 0

【摘要】需要在正则匹配页面中，所有可能存在的 form 表单的元素，可能有 input，action,select,textarea等等所有可能的元素，本文给出一个代码示例。

假设页面 1.html 的网页源代码是：

```
<!DOCTYPE html>
```
```
<html>
```
```
	<head>
```
```
		<meta charset="utf-8" />
```

		<title>一个含有 form 表单的登录注册页面</title>

```
		<style type="text/css">
```

			*{padding:0;margin:0;font-size:12px;}

			.tbl{margin:20px auto;border:1px solid #AACCEE;padding:30px 30px;border-radius:4px;}

			.tbl td{line-height:30px;vertical-align:top;}

```
			textarea{resize:none;height:60px;}
```
```
		</style>
```
```
	</head>
```
```
	<body>
```

		<form action="register.php" method="post">

			<input type="hidden" name="cookie" value="SJKjki80KJ8jkl2" />

			<table cellpadding="0" cellspacing="0" class="tbl">

```
				<tr>
```
```
					<th colspan="2">注册</th>
```
```
				</tr>
```
```
				<tr>
```
```
					<td>昵称：</td>
```

					<td><input type="text" name = 'name' required="" /></td>

```
				</tr>
```
```
				<tr>
```
```
					<td>密码：</td>
```

					<td><input name="password" type="password" required="required" /></td>

```
				</tr>
```
```
				<tr>
```
```
					<td>年龄：</td>
```

					<td><input  name="age" value="22" required="required" ></td>

```
				</tr>
```
```
				<tr>
```
```
					<td>性别：</td>
```
```
					<td>
```

						<input type="radio" name="sex" value="1" /> 男

						<input type="radio" name="sex" value="0" /> 女

```
					</td>
```
```
				</tr>
```
```
				<tr>
```
```
					<td>地区：</td>
```
```
					<td>
```
```
						<select name="area">
```

							<option value="jiangsu">江苏</option>

							<option value="shandong">山东</option>

							<option value="fujian">福建</option>

							<option value="beijing">北京</option>

```
						</select>
```
```
					</td>
```
```
				</tr>
```
```
				<tr>
```
```
					<td>城市：</td>
```
```
					<td>
```
```
						<select name="city">
```

							<option value="qingdao">青岛</option>

							<option value="longyan">龙岩</option>

							<option value="beijing">北京</option>

							<option value="wuxi">无锡</option>

```
						</select>
```
```
					</td>
```
```
				</tr>
```
```
				<tr>
```
```
					<td>兴趣：</td>
```
```
					<td>
```

						<input type="checkbox" name="xingqu[]" value="1" > 篮球

						<input type="checkbox" name="xingqu[]" value="2"> 足球

						<input type="checkbox" name="xingqu[]" value="3" > 跳高

```
					</td>
```
```
				</tr>
```
```
				<tr>
```
```
					<td>照片：</td>
```

					<td><input type="file" name="photo" /></td>

```
				</tr>
```
```
				<tr>
```
```
					<td>简介：</td>
```

					<td><textarea name="summary" required="">这里填入个人简介</textarea></td>

```
				</tr>
```
```
				<tr>
```
```
					<td>备注：</td>
```

					<td><textarea name="remark" required="">1</textarea ></td>

```
				</tr>
```
```
				<tr>
```

					<td colspan="2"><input type="submit" name="register" value="注册"></td>

```
				</tr>
```
```
			</table>	
```
```
		</form>
```

		<form action="login.php" method="post">

			<table cellpadding="0" cellspacing="0" class="tbl">

```
				<tr>
```
```
					<th colspan="2">登录</th>
```
```
				</tr>
```
```
				<tr>
```
```
					<td>昵称：</td>
```

					<td><input type="text" name = 'name' required="required" /></td>

```
				</tr>
```
```
				<tr>
```
```
					<td>密码：</td>
```

					<td><input name="password" type="password" required="required" /></td>

```
				</tr>
```
```
				<tr>
```
```
					<td>备注：</td>
```

					<td><textarea name="remark" required="">2</textarea></td>

```
				</tr>				
```
```
				<tr>
```

					<td colspan="2"><input type="submit" name="register" value="登录"></td>

```
				</tr>
```
```
			</table>	
```
```
		</form>		
```
```
	</body>
```
```
</html>
```

我们需要获取到这个页面所有 form 表单，及每个 form 表单所包含的各类表单元素，例如：input，select，textarea等等。匹配的源代码是：

```
$content = file_get_contents('1.html');
```

$arr_form = get_page_form_data($content);

```
if(empty($arr_form))
```
```
{
```

	echo '抱歉！未匹配到 form 表单元素';

```
}else
```
```
{
```
```
	foreach($arr_form as $k => $v)
```
```
	{
```
```
		echo 'form'.($k+1).':<br />';
```
```
		if(!empty($v['action']))
```
```
		{
```
```
			echo '----action：<br />';
```

			echo '--------'.$v['action'].'<br />';

```
		}
```
```
		if(!empty($v['method']))
```
```
		{
```
```
			echo '----method：<br />';
```

			echo '--------'.$v['method'].'<br />';

```
		}		
```
```
		if(!empty($v['inputs']))
```
```
		{
```
```
			echo '----inputs：<br />';
```

			foreach($v['inputs'] as $key => $value)

```
			{
```

				echo '--------name：'.$value['name'].' type：'.$value['type'].' value：'.$value['value'].'<br />';

```
			}
```
```
		}		
```
```
		if(!empty($v['textarea']))
```
```
		{
```
```
			echo '----textarea：<br />';
```

			foreach($v['textarea'] as $key => $value)

```
			{
```

				echo '--------name：'.$value['name'].' value：'.$value['value'].'<br />';

```
			}
```
```
		}		
```
```
		if(!empty($v['select']))
```
```
		{
```
```
			echo '----select：<br />';
```

			for($m = 0;$m < count($v['select']);$m ++)

```
			{
```

				echo '--------name：'.$v['select'][$m]['name'].'<br />';

				if(!empty($v['select'][$m]['option']))

```
				{
```

					foreach ($v['select'][$m]['option'] as $key => $value)

```
					{
```

						echo '------------value：'.$value.'<br />';

```
					}
```
```
				}
```
```
			}
```
```
		}
```
```
	}
```
```
}
```

// 获取页面中的 form 表单中的所有 input、textarea 元素中 name、value、type 等属性值

```
function get_page_form_data($content)
```
```
{
```
```
	$arr_form = array();
```
```
	$form = regular_form_tags($content);
```
```
	for($i = 0;$i < count($form[0]);$i ++)
```
```
	{
```

		$arr_form[$i]['action'] = regular_form_action($form[1][$i]);

		$arr_form[$i]['method'] = regular_form_method($form[1][$i]);

		$input = regular_input_tags($form[2][$i]);

		for($j = 0;$j < count($input[0]);$j ++)

```
		{
```

			$arr_form[$i]['inputs'][$j]['name'] = regular_input_name($input[0][$j]);

			$arr_form[$i]['inputs'][$j]['type'] = regular_input_type($input[0][$j]);

			$arr_form[$i]['inputs'][$j]['value'] = regular_input_value($input[0][$j]);

```
		}
```

		$textarea = regular_textarea_tags($form[2][$i]);

		for($k = 0;$k < count($textarea);$k ++)

```
		{
```

			$arr_form[$i]['textarea'][$k]['name'] = regular_textarea_name($textarea[$k]);

			$arr_form[$i]['textarea'][$k]['value'] = regular_textarea_value($textarea[$k]);

```
		}
```

		$select = regular_select_tags($form[2][$i]);

		for($l = 0;$l < count($select[0]);$l ++)

```
		{
```

			$arr_form[$i]['select'][$l]['name'] = regular_select_name($select[1][$l]);

			$option = regular_option_tags($select[2][$l]);

			for($n = 0;$n < count($option[$l]);$n ++)

```
			{
```

				$arr_form[$i]['select'][$l]['option'][$n] = regular_option_value($option[$l][$n]);

```
			}				
```
```
		}
```
```
	}
```
```
	return $arr_form;
```
```
}
```
```
//	正则匹配 form 标签
```
```
function regular_form_tags($string)
```
```
{	
```

	$pattern = '/<form(.*?)>(.*?)<\/form>/si';

	preg_match_all($pattern,$string,$result);

```
	return $result;
```
```
}
```

//	正则匹配 form 标签的 action 属性值

```
function regular_form_action($string)
```
```
{
```

	$pattern = '/action[\s]*?=[\s]*?([\'\"])(.*?)\1/';

	if(preg_match($pattern,$string,$result))

```
	{
```
```
		return $result[2];
```
```
	}
```
```
	return null;
```
```
}
```

//	正则匹配 form 标签的 method 属性值

```
function regular_form_method($string)
```
```
{
```

	$pattern = '/method[\s]*?=[\s]*?([\'\"])(.*?)\1/';

	if(preg_match($pattern,$string,$result))

```
	{
```
```
		return $result[2];
```
```
	}
```
```
	return null;
```
```
}
```
```
//	正则匹配 input 标签
```
```
function regular_input_tags($string)
```
```
{
```
```
	$pattern = '/<input.*?\/?>/si';	
```

	if(preg_match_all($pattern,$string,$result))

```
	{
```
```
		return $result;		
```
```
	}
```
```
	return null;
```
```
}
```

//	正则匹配 input 标签的 name 属性值

```
function regular_input_name($string)
```
```
{
```

	$pattern = '/name[\s]*?=[\s]*?([\'\"])(.*?)\1/';

	if(preg_match($pattern,$string,$result))

```
	{
```
```
		return $result[2];
```
```
	}
```
```
	return null;
```
```
	
```
```
}
```

//	正则匹配 input 标签的 type 属性值

```
function regular_input_type($string)
```
```
{
```

	$pattern = '/type[\s]*?=[\s]*?([\'\"])(.*?)\1/';

	if(preg_match($pattern,$string,$result))

```
	{
```
```
		return $result[2];
```
```
	}
```
```
	return null;
```
```
}
```

//	正则匹配 input 标签的 value 属性值

```
function regular_input_value($string)
```
```
{
```

	$pattern = '/value[\s]*?=[\s]*?([\'\"])(.*?)\1/';

	if(preg_match($pattern,$string,$result))

```
	{
```
```
		return $result[2];
```
```
	}
```
```
	return null;	
```
```
}
```
```
//	正则匹配 textarea 标签
```
```
function regular_textarea_tags($string)
```
```
{
```

	$pattern = '/(<textarea.*?>.*?<\/textarea[\s]*?>)/si';

	if(preg_match_all($pattern,$string,$result))

```
	{
```
```
		return $result[1];
```
```
	}
```
```
	return null;
```
```
}
```

//	正则匹配 textarea 标签的 name 属性值

```
function regular_textarea_name($string)
```
```
{
```

	$pattern = '/name[\s]*?=[\s]*?([\'\"])(.*?)\1/si';

	if(preg_match($pattern,$string,$result))

```
	{
```
```
		return $result[2];
```
```
	}
```
```
	return null;
```
```
}
```

//	正则匹配 textarea 标签的 name 属性值

function regular_textarea_value($string)

```
{
```

	$pattern = '/<textarea.*?>(.*?)<\/textarea>/si';

	if(preg_match($pattern,$string,$result))

```
	{
```
```
		return $result[1];
```
```
	}
```
```
	return null;
```
```
}
```
```
//	正则匹配 select 标签
```
```
function regular_select_tags($string)
```
```
{
```

	$pattern = '/<select(.*?)>(.*?)<\/select[\s]*?>/si';

	preg_match_all($pattern,$string,$result);

```
	return $result;
```
```
}
```

//	正则匹配 select 标签的 option 子标签

```
function regular_option_tags($string)
```
```
{
```

	$pattern = '/<option(.*?)>.*?<\/option[\s]*?>/si';

	preg_match_all($pattern,$string,$result);

```
	return $result;		
```
```
}
```

//	正则匹配 select 标签的 name 属性值

```
function regular_select_name($string)
```
```
{
```

	$pattern = '/name[\s]*?=[\s]*?([\'\"])(.*?)\1/si';

	if(preg_match($pattern,$string,$result))

```
	{
```
```
		return $result[2];
```
```
	}
```
```
	return null;
```
```
}
```

//	正则匹配 select 的子标签 option 的 value 属性值

```
function regular_option_value($string)
```
```
{
```

	$pattern = '/value[\s]*?=[\s]*?([\'\"])(.*?)\1/si';

	if(preg_match($pattern,$string,$result))

```
	{
```
```
		return $result[2];
```
```
	}
```
```
	return null;
```
```
}
```

运行效果如下图所示：

这样我们就可以实现获取任意一个页面中的 form 表单所有存在的元素啦！（给站长点个赞吧，本文花费了一天的时间才写好的~~~）

版权归马富天PHP博客所有

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