php HOW To send item on the same page as the form_问答_开发者

php HOW To send item on the same page as the form

开发者 https://www.devze.com 2023-02-22 10:23 出处：网络

Good day! I am a newbie in php.. I made a form using html where I can input the grade of the student. Then a php page to know if they pass or not.

相关专题：php

Good day! I am a newbie in php.. I made a form using html where I can input the grade of the student. Then a php page to know if they pass or not. My problem is how can i send back the reply on the html page. Example how can I send the You Failed status on my html page under the form.

My code is as follows:

 <HTML>
 开发者_JS百科   <BODY>
    Please enter your grade (0-100 only):
    <FORM ACTION="grade2.php" METHOD="POST">
    <table border = "1">
        <tr>
            <td>Grade</td>
            <td><input type="text" name="grade" /></td>
        </tr>
    </table>
    <INPUT type="submit" name="submit" value="grade">
    </BODY>
    </HTML>


<?php

$grade = $_POST['grade'];
IF ($grade>=0 && $grade<=50){
    print "You failed";
} ELSE IF ($grade<=60){
    print "You Passed! But Study Harder!";
} ELSE IF ($grade<=70){
    print "Nice";
} ELSE IF ($grade<=80) {
    print "Great Job";
} ELSE IF ($grade<=90){
    print "Excellent";
} ELSE IF ($grade<=100){
    print "God Like!";
} ELSE {
    print "Invalid Grade!";
}   

?>

Just use one PHP page containing both the form and message. For example (assuming your file is grade.php)

<form action="grade.php" method="post">
    <!-- form elements, etc -->
</form>
<?php
if (isset($_POST['grade'])) {
    $grade = (double) $_POST['grade'];
    // if statements, print message, etc
}
?>

The only issue I see that may prevent it from showing up now is that the print statements are outside the <body> tags.

Move

</BODY> 
</HTML>

to the very end of the file

There's two ways that you can use.

You can echo the script filename:

<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">

Or just leave the action field blank. The page will then re-load on itself.

<form action="" method="post">

At the top of your script, test for the presence of POST variables on the reload:

if (isset($_POST['submit'])) {

And that's it.

If you mean send as in email, use the mail() function.

If you mean just print the result to the screen, use echo.

<?php

$grade = $_POST['grade'];
IF ($grade>=0 && $grade<=50){
    echo "You failed";
} ELSE IF ($grade<=60){
    echo "You Passed! But Study Harder!";
} ELSE IF ($grade<=70){
    echo "Nice";
} ELSE IF ($grade<=80) {
    echo "Great Job";
} ELSE IF ($grade<=90){
    echo "Excellent";
} ELSE IF ($grade<=100){
    echo "God Like!";
} ELSE {
    echo "Invalid Grade!";
}   

?>

Also, i'm not sure if this is a standard or not (I usually don't see it that way), but having all caps in your IF / ELSE statements really annoys me for some reason.