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Old 09-24-09, 02:59 PM
donald_nqn donald_nqn is offline
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PHP Forms
This is more of an inquiry rather than coding help. And if its not in the right forums, please forgive me. But i posted it here, since the coding is done in PHP language.

I've made this small project, creating a GPA calculator. You would input your average percentage of the subject and then it would calculate the GPA for you and the honor role. However once i compute it, the 'data' that the user input disappears. Is there a way to make the 'data' stay where it is?

Screen Shots:
http://i33.tinypic.com/2py7wwn.png
http://i34.tinypic.com/4fx4p5.png
http://i38.tinypic.com/2eqcnd4.png
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Old 09-24-09, 03:51 PM
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Please post your code.
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Old 09-24-09, 05:15 PM
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Old 09-24-09, 07:55 PM
Jcbones Jcbones is offline
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If it is just for that ONE page load, echo your SuperGlobals back to the form inputs.
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Old 09-25-09, 03:10 AM
donald_nqn donald_nqn is offline
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This is my code.

PHP Code:

<form action="<?php $_SERVER['../PHP_SELF']; ?>" method="POST">

<table align="center">



<tr bgcolor="#99a5b3"><td colspan="3"><h2>Grade Point Average Calculator</h2></td></tr>

<tr><td style="font-size: 0.5pt;" bgcolor="#ffcc66" colspan="3">&nbsp;</td></tr>



<tr bgcolor="#EBEBEB"><td colspan="3"><b>Core Subjects</b></td></tr>

<tr bgcolor="#D0D0D0"><td width="157">English</td><td width="65"><input type="checkbox" name="hlenglish" value="yes" />HL/AP</td><td ><input width="30" name="english"> %</td></tr>

<tr bgcolor="#EBEBEB"><td width="157">Math</td><td width="65"><input type="checkbox" name="hlmath" value="yes" />HL/AP</td><td><input width="30" name="math"> %</td></tr>

<tr bgcolor="#D0D0D0"><td width="157">Social Studies</td><td width="65"><input type="checkbox" name="hlsocialstudies" value="yes" />HL/AP</td><td><input width="30" name="westernciv"> %</td></tr>

<tr bgcolor="#EBEBEB"><td width="157">Science</td><td width="65"><input type="checkbox" name="hlscience" value="yes" />HL/AP</td><td><input width="30" name="science"> %</td></tr>

<tr bgcolor="#D0D0D0"><td width="157">PE/Health</td><td width="65"></td><td><input width="30" name="pehealth"> %</td></tr>

<tr bgcolor="#EBEBEB"><td colspan="3"><b>Electives</b></td></tr>

<tr bgcolor="#D0D0D0"><td width="157">Elective 1</td><td width="65"><input type="checkbox" name="hlelective1" value="yes" />HL/AP</td><td><input width="30" name="arabic"> %</td></tr>

<tr bgcolor="#EBEBEB"><td width="157">Elective 2</td><td width="65"><input type="checkbox" name="hlelective2" value="yes" />HL/AP</td><td><input width="30" name="guitar"> %</td></tr>

<tr bgcolor="D0D0D0"><td align="right" colspan="3"><input type="submit" value="Calculate" name="Submit"/></td></tr>

<tr bgcolor="#EBEBEB"><td colspan="3"><b><?php

if (isset($_POST['Submit'])){



$english = $_POST['english'];

$math = $_POST['math'];

$westernciv = $_POST['westernciv'];

$science = $_POST['science'];

$pehealth = $_POST['pehealth'];

$arabic = $_POST['arabic'];

$guitar = $_POST['guitar'];

$hlenglish = $_POST['hlenglish'];

$hlmath = $_POST['hlmath'];

$hlsocialstudies = $_POST['hlsocialstudies'];

$hlscience = $_POST['hlscience'];

$hlelective1 = $_POST['hlelective1'];

$hlelective2 = $_POST['hlelective2'];





if ( $english <=  59 ) {

    $a = 0.0;

} elseif ( $english <=  62 ) {

    $a = 0.7;

} elseif ($english <= 66 ) {

    $a = 1.0;

} elseif ($english <= 69 ) {

    $a = 1.3;

} elseif ($english <= 72 ) {

    $a = 1.7;

} elseif ($english <= 76 ) {

    $a = 2.0;

} elseif ($english <= 79 ) {

    $a = 2.3;

} elseif ($english <= 82 ) {

    $a = 2.7;

} elseif ($english <= 86 ) {

    $a = 3.0;    

} elseif ($english <= 89 ) {

    $a = 3.3;    

} elseif ($english <= 92 ) {

    $a = 3.7;    

} elseif ($english <= 96 ) {

    $a = 4.0;    

} else {

    $a= 4.3;

}



if ( $math <=  59 ) {

    $b = 0.0;

} elseif ( $math <=  62 ) {

    $b = 0.7;

} elseif ($math <= 66 ) {

    $b = 1.0;

} elseif ($math <= 69 ) {

    $b = 1.3;

} elseif ($math <= 72 ) {

    $b = 1.7;

} elseif ($math <= 76 ) {

    $b = 2.0;

} elseif ($math <= 79 ) {

    $b = 2.3;

} elseif ($math <= 82 ) {

    $b = 2.7;

} elseif ($math <= 86 ) {

    $b = 3.0;    

} elseif ($math <= 89 ) {

    $b = 3.3;    

} elseif ($math <= 92 ) {

    $b = 3.7;    

} elseif ($math <= 96 ) {

    $b = 4.0;    

} else {

    $b= 4.3;

}



if ( $westernciv <=  59 ) {

    $c = 0.0;

} elseif ( $westernciv <=  62 ) {

    $c = 0.7;

} elseif ($westernciv <= 66 ) {

    $c = 1.0;

} elseif ($westernciv <= 69 ) {

    $c = 1.3;

} elseif ($westernciv <= 72 ) {

    $c = 1.7;

} elseif ($westernciv <= 76 ) {

    $c = 2.0;

} elseif ($westernciv <= 79 ) {

    $c = 2.3;

} elseif ($westernciv <= 82 ) {

    $c = 2.7;

} elseif ($westernciv <= 86 ) {

    $c = 3.0;    

} elseif ($westernciv <= 89 ) {

    $c = 3.3;    

} elseif ($westernciv <= 92 ) {

    $c = 3.7;    

} elseif ($westernciv <= 96 ) {

    $c = 4.0;    

} else {

    $c= 4.3;

}



if ( $science <=  59 ) {

    $d = 0.0;

} elseif ( $science <=  62 ) {

    $d = 0.7;

} elseif ($science <= 66 ) {

    $d = 1.0;

} elseif ($science <= 69 ) {

    $d = 1.3;

} elseif ($science <= 72 ) {

    $d = 1.7;

} elseif ($science <= 76 ) {

    $d = 2.0;

} elseif ($science <= 79 ) {

    $d = 2.3;

} elseif ($science <= 82 ) {

    $d = 2.7;

} elseif ($science <= 86 ) {

    $d = 3.0;    

} elseif ($science <= 89 ) {

    $d = 3.3;    

} elseif ($science <= 92 ) {

    $d = 3.7;    

} elseif ($science <= 96 ) {

    $d = 4.0;    

} else {

    $d= 4.3;

}



if ( $pehealth <=  59 ) {

    $e = 0.0;

} elseif ( $pehealth <=  62 ) {

    $e = 0.7;

} elseif ($pehealth <= 66 ) {

    $e = 1.0;

} elseif ($pehealth <= 69 ) {

    $e = 1.3;

} elseif ($pehealth <= 72 ) {

    $e = 1.7;

} elseif ($pehealth <= 76 ) {

    $e = 2.0;

} elseif ($pehealth <= 79 ) {

    $e = 2.3;

} elseif ($pehealth <= 82 ) {

    $e = 2.7;

} elseif ($pehealth <= 86 ) {

    $e = 3.0;    

} elseif ($pehealth <= 89 ) {

    $e = 3.3;    

} elseif ($pehealth <= 92 ) {

    $e = 3.7;    

} elseif ($pehealth <= 96 ) {

    $e = 4.0;    

} else {

    $e= 4.3;

}



if ( $arabic <=  59 ) {

    $f = 0.0;

} elseif ( $arabic <=  62 ) {

    $f = 0.7;

} elseif ($arabic <= 66 ) {

    $f = 1.0;

} elseif ($arabic <= 69 ) {

    $f = 1.3;

} elseif ($arabic <= 72 ) {

    $f = 1.7;

} elseif ($arabic <= 76 ) {

    $f = 2.0;

} elseif ($arabic <= 79 ) {

    $f = 2.3;

} elseif ($arabic <= 82 ) {

    $f = 2.7;

} elseif ($arabic <= 86 ) {

    $f = 3.0;    

} elseif ($arabic <= 89 ) {

    $f = 3.3;    

} elseif ($arabic <= 92 ) {

    $f = 3.7;    

} elseif ($arabic <= 96 ) {

    $f = 4.0;    

} else {

    $f= 4.3;

}

    

if ( $guitar <=  59 ) {

    $g = 0.0;

} elseif ( $guitar <=  62 ) {

    $g = 0.7;

} elseif ($guitar <= 66 ) {

    $g = 1.0;

} elseif ($guitar <= 69 ) {

    $g = 1.3;

} elseif ($guitar <= 72 ) {

    $g = 1.7;

} elseif ($guitar <= 76 ) {

    $g = 2.0;

} elseif ($guitar <= 79 ) {

    $g = 2.3;

} elseif ($guitar <= 82 ) {

    $g = 2.7;

} elseif ($guitar <= 86 ) {

    $g = 3.0;    

} elseif ($guitar <= 89 ) {

    $g = 3.3;    

} elseif ($guitar <= 92 ) {

    $g = 3.7;    

} elseif ($guitar <= 96 ) {

    $g = 4.0;    

} else {

    $g= 4.3;

}



if ( $hlenglish == 'yes' ) {

    $a = $a + 0.3;

} else {

    $a = $a;

}



if ( $hlmath == 'yes' ) {

    $b = $b + 0.3;

} else {

    $b = $b;

}



if ( $hlsocialstudies == 'yes' ) {

    $c = $c + 0.3;

} else {

    $c = $c;

}



if ( $hlscience == 'yes' ) {

    $d = $d + 0.3;

} else {

    $d = $d;

}



if ( $hlelective1 == 'yes' ) {

    $f = $f + 0.3;

} else {

    $f = $f;

}



if ( $hlelective2 == 'yes' ) {

    $g = $g + 0.3;

} else {

    $g = $g;

}

    

$gpa = ($a+$b+$c+$d+$e+$f+$g)/7;

$gpa2 = round($gpa, 2);



echo "Your GPA is ".$gpa2;



    }

?>

</b></td></tr>



</table>



</form>
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  #6 (permalink)  
Old 09-25-09, 12:08 PM
ruteckycs's Avatar
ruteckycs ruteckycs is offline
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Use a hidden field.
HTML Code:
<input type="hidden" name="GPA" value="<?php echo$gpa2; ?>"
Or as I said use a cookie
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Last edited by Nico; 09-25-09 at 12:11 PM.
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Old 09-25-09, 08:13 PM
pyr0t3chnician pyr0t3chnician is offline
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PHP Code:

<input type="text" name="english" value="<?php echo $_POST['english']; ?>">
That should do the trick, just do that for every text input.
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  #8 (permalink)  
Old 09-26-09, 03:48 AM
donald_nqn donald_nqn is offline
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Quote:
Originally Posted by pyr0t3chnician View Post
PHP Code:

<input type="text" name="english" value="<?php echo $_POST['english']; ?>">
That should do the trick, just do that for every text input.
This worked thank you

One more thing. How could you do it for the checkboxes? Since they already have a value="yes"
Last edited by donald_nqn; 09-26-09 at 03:51 AM.
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Old 09-26-09, 11:19 PM
Jcbones Jcbones is offline
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PHP Code:

<input type="checkbox" name="hlscience" value="yes" <?php if($_POST['hlscience'] == 'yes') { echo 'checked="checked"'; } ?> />
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