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don´t recognize variable of php

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死守一世寂寞
死守一世寂寞 2021-01-29 16:38

I have the following code in two files separately

file one.php





   Age:
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2条回答
  • 夕颜
    2021-01-29 16:59

    It's not recognized because you don't create it. Variables don't magically appear in PHP1. You need to get that value from the $_POST superglobal: 

    <HTML>
<BODY>
<?PHP
   $age = $_POST['age'];
   print ("The age is: $age");
?>
</BODY>
</HTML>

    1 Anymore. They used to when register_globals existed. But that has been obsolete since long before you started coding.

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  • 花落未央
    2021-01-29 17:07

    Your trying to access the value of age from a page( dos.php) but you posting it to (two.php) and your missing $_POST['age'].

    one.php

    <HTML>
<BODY>
<FORM ACTION="two.php" METHOD="POST">
Age: <INPUT TYPE="text" NAME="age">
<INPUT TYPE="submit" VALUE="OK">
</FORM>
</BODY>
</HTML>

    two.php

    <HTML>
<BODY>
<?PHP
$age = $_POST['age'];
print ("The age is: $age");
?>
</BODY>
</HTML>
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