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Я создал этот кусок кода как часть практического упражнения, однако он не работает должным образом, я точно определил проблему с кодом PHP, потерявшим значения, введенные через текстовые поля (Пункт программы состоит в том, чтобы генерировать котировку цен на товары в конце, используя значения из текстовых полей для величин и констант для фактических цен). Затем она выводится правильно, но поскольку она потеряла значения, которые я получаю, это «Общая цена = 0 'PHP-код, теряющий свои значения, когда я попал в submit
У кого-нибудь есть идеи? (любые комментарии есть только для проверки ошибок) я включил мой полный код в ссылке ниже, чтобы избежать ошибок
код из Pastebin:
<!DOCTYPE HTML>
<html>
<head>Validation example
</head>
<body>
<?php
//?
$nameErr = $CustomeremailErr = $MonitorqtyErr = $PCqtyErr = $MiceqtyErr = $KeyboardqtyErr = $SpeakerqtyErr = "";
$PCqty = $Miceqty = $Keyboardqty = $Monitorqty = $Speakerqty = 0;
$name = $Customeremail = "";
DEFINE ("PCPRICE" , 300.01);
DEFINE ("MONITORPRICE" , 100);
DEFINE ("KEYBOARDPRICE" , 5);
DEFINE ("MICEPRICE" , 5);
DEFINE ("SPEAKERPRICE" , 20);
DEFINE ("DODGYDELIVERY", 35.05);
//?
if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (empty($_POST["name"])) {
$nameErr = "Name is required";
} else {
$name = clean_input($_POST["name"]);
if (!preg_match("/^[a-zA-Z ]*$/",$name)) {
$nameErr = "Only letters and white space allowed";
}
}
if (empty($_POST["customeremail"])) {
$customeremailErr = "Email is required";
} else {
$Customeremail = clean_input($_POST["customeremail"]);
//check if email is well-formed
if (!filter_var($Customeremail, FILTER_VALIDATE_EMAIL)) {
$CustomeremailErr = "Invalid email format";
}
}
if (empty($_POST["PCqty"])) {
$PCqty = clean_input($_POST["PCqty"]);
} else if (preg_match("/^[a-zA-Z ]*$/",$PCqty)) {
$PCqtyErr = "Only Numbers Allowed";
}
if (empty($_POST["Monitorqty"])) {
$Monitorqty = clean_input($_POST["Monitorqty"]);
} else if (preg_match("/^[a-zA-Z ]*$/",$Monitorqty)) {
$MonitorqtyErr = "Only Numbers Allowed";
}
if (empty($_POST["Keyboardqty"])) {
$Keyboardqty = clean_input($_POST["Keyboardqty"]);
} else if (preg_match("/^[a-zA-Z ]*$/",$Keyboardqty)) {
$KeyboardqtyErr = "Only Numbers Allowed";
}
if (empty($_POST["Miceqty"])) {
$Miceqty = clean_input($_POST["Miceqty"]);
} else if (preg_match("/^[a-zA-Z ]*$/",$Miceqty)) {
$MiceqtyErr = "Only Numbers Allowed";
}
//?Fix change to speaker
if (empty($_POST["Speakerqty"])) {
$Speakerqty = clean_input($_POST["Speakerqty"]);
} else if (preg_match("/^[a-zA-Z ]*$/",$Speakerqty)) {
$SpeakerqtyErr = "Only Numbers Allowed";
}
}
// function test_input cleans up data by trimming off blank space, removing slashes and
//coding characters like < to < to prevent hacking
function clean_input ($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
?>
<h2>PHP Form Validation Example</h2>
<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
Name: <input type="text" name="name" value="<?php echo $name;?>">
<span class="error">*<?php echo $nameErr;?></span>
<br><br>
email: <input type="text" name = "customeremail" value="<?php echo $Customeremail;?>">
<span class="error">*<?php echo $CustomeremailErr;?></span>
<br><br>
PC quantity: <input type="text" name="PCqty" value="<?php echo $PCqty;?>">
<span class="error">*<?php echo $PCqtyErr;?></span>
<br><br>
Keyboard quantity: <input type="text" name="Keyboardqty" value="<?php echo $Keyboardqty;?>">
<span class="error">*<?php echo $KeyboardqtyErr;?></span>
<br><br>
Mice Quantity: <input type="text" name="Miceqty" value="<?php echo $Miceqty;?>">
<span class="error">*<?php echo $MiceqtyErr;?></span>
<br><br>
Speaker Quantity: <input type="text" name="Speakerqty" value="<?php echo $Speakerqty;?>">
<span class="error">*<?php echo $SpeakerqtyErr;?></span>
<br><br>
Monitor Quantity: <input type="text" name="Monitorqty" value="<?php echo $Monitorqty;?>">
<span class="error">*<?php echo $MonitorqtyErr;?></span>
<br><br>
<input type="submit" name="submit" value="Submit">
</form>
<?php
$PcTotalCost = $SpeakerTotalCost = $MonitorTotalCost = $MiceTotalCost = $KeyboardTotalCost = 0 ;
// Has this form been submitted and was data entered then do the calculations
if ($_SERVER["REQUEST_METHOD"] == "POST") {
// check there are no errors in the entries
if (($nameErr == "") && ($CustomeremailErr == "") && ($PCqtyErr == "") && ($MonitorqtyErr == "") && ($MiceqtyErr == "") && ($KeyboardqtyErr == "") && ($SpeakerqtyErr == ""))
{
echo "<h2>Quote</h2>";
// Do required calculation
$PcTotalCost = $PCqty * PCPRICE;
$KeyboardTotalCost = $Keyboardqty * KEYBOARDPRICE;
$MonitorTotalCost = $Monitorqty * MONITORPRICE;
$SpeakerTotalCost = $Speakerqty * SPEAKERPRICE;
$MiceTotalCost = $Miceqty * MICEPRICE;
$GoodsTotalCost = $MiceTotalCost + $SpeakerTotalCost + $MonitorTotalCost + $KeyboardTotalCost + $PcTotalCost;
$VatRate = $GoodsTotalCost/100;
$GrossCost = $GoodsTotalCost + $VatRate + DODGYDELIVERY;
// Displaying the result
echo 'Dodgy Dan’s quote for ' . $name . ' on ' . date(1) . "<br/>" ;
echo $PCqty . " PC's at a cost of £ ". number_format(PCPRICE, 2) . " each would cost £ " . number_format($PcTotalCost, 2) . "<br/>";
echo $Keyboardqty . " Keyboards at a cost of £ ". number_format(KEYBOARDPRICE, 2) . " each would cost £ " . number_format($KeyboardTotalCost, 2) . "<br/>";
echo $Miceqty . " Mice at a cost of £ ". number_format(MICEPRICE, 2) . " each would cost £ " . number_format($MiceTotalCost, 2) . "<br/>";
echo $Speakerqty . " Speakers at a cost of £ ". number_format(SPEAKERPRICE, 2) . " each would cost £ " . number_format($SpeakerTotalCost, 2) . "<br/>";
echo $Monitorqty . " Monitors at a cost of £ ". number_format(MONITORPRICE, 2) . " each would cost £ " . number_format($MonitorTotalCost, 2) . "<br/>";
echo " The Delivery charge would be £" . number_format (DODGYDELIVERY, 2) . "<br/>" ;
echo ' The total cost of goods is £' . $GoodsTotalCost . "<br/>" ;
echo " The VAT(10%)rate for this purchase is £" . $VatRate . "<br/>" ;
echo ' The total gross cost after VAT for this order is £' . $GrossCost . "<br/>" ;
}
}
?>
</body>
</html>
это за одно '! [' Недействителен, Снять скобу и что это '