Problem with $_POST and Input

Discussion in 'PHP' started by ItamarP, Jun 28, 2009.

0
  1. #1
    I wrote this 2 codes
    The first is from the file "parabola.html"

    <html>

<head>
<b><u>Parabola-Full Process</u></b><br/>
</head>

Please enter the parabola (Ax^+bx+c) a , b and c values  ,  Example:<br/>
</br>
-3x^-5x+3  (Note ; X^ means x squared)<br/>
</br>
View at the function above:<br/>
</br>
It's 'a' value is -3 , <br/>
</br>
it's 'b' value is -5,<br/>
</br>
and it's 'c' value is 3 (+3)<br/>

<form name="input" action="parabola2.php" method="post">
a value:<br/>
<input type="text" name="$a">
</br>b value </br>
<input type="text" name="$b">
</br>c value </br>
<input type="text" name="$c">
<br/>
</br><input type="submit" value="submit" form="submit">
</form>

</body>

</html>
    PHP:


    the second one is from the file "parbola2.php"

    <?php

//data from HTML Methods

$a=$_POST['a'] ;             //funca
$b=$_POST['b'] ;             //funcb
$c= $_POST['c'] ;            //func-c

//-->calculating

$funcony=echo $c ;
$funconx=(-1*$b+^^$b*$b-4*$a*$c^^):2
$funconx2=(-1*$b-^^$b*$b-4*$a*$c^^):2
$funcxmaxormin=-1*(b/2a) //if the func is happy it has max ,  else , it has min
$funcymaxnormin=$a*$funcxmaxormin+$b*$funcxmaxormin+c

if ($a==0) echo {"Error!The a value musn't be 0! 
<ahref="www.site.end">Please Insert 'a' value again</a> " ; 
}
elseif ($a>0) echo {"The parabola is "happy" ";
} 
else echo {"The parabola is "sad" " ;} <br/>

<b></u>Parabola's min/max point</u><b> </br>
</br>

if ($a>0)  //max or min point
echo  {"The maximum point of the parabola is ($funcxmaxormin,$funcymaxnormin)" ;
}
else echo {"The minimum point of the parabola is ($funcxmaxormin,$funcymaxnormin)"}

<b><u>Parabola's meeting with the x line: </u></b> </br>
</br> echo "($funconx1,0)" , "(funconx2,0) ;

<b><u>Parabola's meeting with the y line:</u></b> </br>
</br> echo "(0,$funcony)" ;
?>
    PHP:



    when i click on the "submit" button i see all the content abvoe-->the code of "parabola.php" itself. where is the problem?
     
    ItamarP, Jun 28, 2009 IP
  2. credobyte

    credobyte Peon

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    #2
    The problem is that, it's not a PHP code ( only some part of all this mess ).
    By the first, go to tizag.com and learn about variables & echo function ( there's nothing to explain .. you simply don't know anything about PHP ) ;)
     
    credobyte, Jun 28, 2009 IP
  3. ItamarP

    ItamarP Member

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    #3
    $funcony=echo $c

    i meant to
    $funcony=$c
     
    ItamarP, Jun 29, 2009 IP
  4. credobyte

    credobyte Peon

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    #4
    Here you go ( believe me, you need to learn a lot ) :
    <?php

$a=$_POST['a'] ;             //funca
$b=$_POST['b'] ;             //funcb
$c= $_POST['c'] ;            //func-c

//-->calculating

$funcony=$c ;
$funconx=(-1*$b+^^$b*$b-4*$a*$c^^):2;
$funconx2=(-1*$b-^^$b*$b-4*$a*$c^^):2;
$funcxmaxormin=-1*($b/2*$a); //if the func is happy it has max ,  else , it has min
$funcymaxnormin=$a*$funcxmaxormin+$b*$funcxmaxormin+$c;

if ($a == 0) {
	echo "Error!The a value musn't be 0! <a href='www.site.end'>Please Insert 'a' value again</a> ";
} elseif ($a>0) {
	echo "The parabola is 'happy'";
} else {
	echo {"The parabola is 'sad' <br/>";
}

echo "<b></u>Parabola's min/max point</u><b> </br></br>";

if ($a>0) { //max or min point
	echo "The maximum point of the parabola is ($funcxmaxormin,$funcymaxnormin)";
} else {
	echo "The minimum point of the parabola is ($funcxmaxormin,$funcymaxnormin)";
}

echo "<b><u>Parabola's meeting with the x line: </u></b> </br></br>";
echo "($funconx1,0)" , "(funconx2,0)" ;

echo "<b><u>Parabola's meeting with the y line:</u></b> </br></br>";
echo "(0,$funcony)";

?>
    PHP:
     
    credobyte, Jun 29, 2009 IP