在PHP中使用$ _GET字符串计数
问题描述：
Hi Im trying to do few calculations but seems like my GET function isn't being used correctly in line 82 any assistance please. I'm a newbie with this coding...
Im trying to retrieve info from my form and add it all together in line 82
Form:
<!DOCTYPE HTML>
<html>
<head>
<style>
.error {color: #FF0000;}
</style>
</head>
<body> <form method="POST" action="gc.php">
Interceptors:<input type="text" name="inter" value="<?php echo $inter;?>"><br><br>
Destroyers:<input type="text" name="destr" value="<?php echo $destr;?>"><br><br>
Cruisers:<input type="text" name="cruiser" value="<?php echo $cruiser;?>"><br><br>
Bombers:<input type="text" name="bomb" value="<?php echo $bomb;?>"><br><br>
Battleships:<input type="text" name="battle" value="<?php echo $battle;?>"><br><br>
<input type="submit" name="submit" value="Submit">
</form><br><br><p></a>
</body>
</html>
Calculation page named gc.php
<html>
<body>
<!---Metal--->
<?php
$im = 120;
$dm = 200;
$cm = 1000;
$bom = 2000;
$bm = 3650;
?>
<!---Crystal--->
<?php
$ic = 80;
$dc = 160;
$cc = 540;
$boc = 840;
$bc = 1900;
?>
<!---Gas--->
<?php
$ig = 120;
$dg = 150;
$cg = 1360;
$bog = 1450;
$bg = 4970;
?>
<!---Attack HP--->
<?php
$ia = 80;
$da = 44;
$ca = 300;
$boa = 50;
$ba = 1400;
?>
<!---Defence HP--->
<?php
$id = 20;
$dd = 110;
$cd = 450;
$bod = 10;
$bd = 1180;
?>
<!---Total Attack HP - Ship Type--->
<?php
$tia = ($_GET["inter"] * $ia);
$tda = ($_GET["destr"] * $da);
$tca = ($_GET["cruiser"] * $ca);
$tboa = ($_GET["bomb"] * $boa);
$tba = ($_GET["battle"] * $ba);
?>
<!---Total Defence HP - Ship Type--->
<?php
$tid = ($_GET["inter"] * $id);
$tdd = ($_GET["destr"] * $dd);
$tcd = ($_GET["cruiser"] * $cd);
$tbod = ($_GET["bomb"] * $bod);
$tbd = ($_GET["battle"] * $bd);
?>
<!---Total Attack--->
<?php
$tatt = ($tia + $tda + $tca + $tboa + $tba);
?>
<!---Total Defence--->
<?php
$tdef = ($tid + $tdd + $tcd + $tbod + $tbd);
?>
<!---Total Troops--->
<?php
$ttroops = ($_GET["inter"] + $_GET["destr"] + $_GET["cruiser"] + $_GET["bomb"] + $_GET["battle"] );
?>
<table style="width:300px">
<tr>
<td>Troops</td>
<td>Amount</td>
<td>Attack HP</td>
<td>Defence HP</td>
</tr>
<tr>
<td>Interceptors</td>
<td><?php($_GET["inter"];)?></td>
<td><?php echo $tia;?></td>
<td><?php echo $tid;?></td>
</tr>
<tr>
<td>Destroyers</td>
<td><?php($_GET["destr"];)?></td>
<td><?php echo $tda;?></td>
<td><?php echo $tdd;?></td>
</tr>
<tr>
<td>Cruisers</td>
<td><?php($_GET["cruiser"];)?></td>
<td><?php echo $tca;?></td>
<td><?php echo $tcd;?></td>
</tr>
<tr>
<td>Bombers</td>
<td><?php($_GET["bomb"];)?></td>
<td><?php echo $tboa;?></td>
<td><?php echo $tbod;?></td>
</tr>
<tr>
<td>Battleships</td>
<td><?php($_GET["battle"];)?></td>
<td><?php echo $tba;?></td>
<td><?php echo $tbd;?></td>
</tr>
<tr>
<td>Totals</td>
<td><?php echo $ttroops;?></td>
<td><?php echo $tatt;?></td>
<td><?php echo $tdef;?></td>
</tr>
</table>
<?php
include "menu2.php";
?>
</body>
</html>
答
$ttroops = ($_GET["inter"] + $_GET["destr"] + $_GET["cruiser"] $_GET["bomb"] + $_GET["battle"] );
Should be like
$ttroops = ($_GET["inter"] + $_GET["destr"] + $_GET["cruiser"] + $_GET["bomb"] + $_GET["battle"] );
As you forgot to add + between two $_GET variable..
And I'm not sure..
Is it true line?$tatt - ($tia + $tda + $tca + $tboa + $tba);
I think it should be$tatt = ($tia + $tda + $tca + $tboa + $tba);
And<?php($_POST["inter"]);?> should be <?php echo $_POST["inter"]; ?>
I've seen this mistake in multiple time in your code.
答
Please change the:
<td><?php($_GET["Battle"];)?></td>
to:
<td><?php($_GET["battle"];)?></td>
and the:
<td><?php($_GET["Destr"];)?></td>
to:
<td><?php($_GET["destr"];)?></td>