Detailed introduction to the implementation of PHP obtaining form data and HTML embedding PHP scripts-PHP Tutorial-php.cn

Detailed introduction to the implementation of PHP obtaining form data and HTML embedding PHP scripts

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Release： 2023-03-06 12:26:01

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When PHP accepts information submitted through an HTML form, it will save the submitted data in a global array. We can call the system-specific automatic global variable array to obtain these values.

Commonly used automatic global variables are as follows:

1. GET method

Function: Get the data submitted by get method

Format: $_GET["formelement"]

2. POST method

Function: Get the data submitted by post method

Format: $_POST["formelement"]

##3. REQUEST method

Function: Get data submitted in any way. The $_REQUEST automatic global variable contains all GET, POST, COOKIE and FILE data, if you don’t care about the data source.

Format: $_REQUEST["formelement"]

Check box, list box (the name is in the form of an array For example: "select[]", just use $_POST["select"] when getting its value)

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
</head>

<body>
<!--获取表单数据的两种方法-->
<!--post-->
<form method="post" action="8.3.php" name="form1">
 <table border="1" width="400" cellpadding="0" cellspacing="0">
 <tr>
  <td height="30"> 用户名:<input name="txtName" type="text" size="12">
  密码:<input name="txtPsd" type="password" size="12">
  <input type="submit" name="SubmitBtn" value="提交">
  </td>
 </tr>
 </table>
</form><br/>

<!--get URL的长度需要限定在1M范围内，否则会截取-->
<!--可以使用urlencode与urldecode对URL进行编解码-->
<form method="get" action="8.3.php" name="form2">
 <table border="1" width="400" cellpadding="0" cellspacing="0">
 <tr>
  <td width="400" height="30"> 订单号:<input name="txtFrame" type="text" size="12">
  <input type="submit" name="SubmitBtn">
  </td>
 </tr>
 </table>
</form>

<!--在Web页面中嵌入PHP脚本-->
<?php
  $strTxt = &#39;男&#39;;
?>
<input type="text" value="<?php echo "strTxt"; ?>">

</body>

<?php
  echo &#39;用户名: &#39;.$_POST["txtName"]." 密码：".$_POST[&#39;txtPsd&#39;];
  echo &#39;订单号:&#39;.$_GET["txtFrame"];
?>

</html>

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