2
私は妻のためにCRMを構築しており、私たちのビジネスに利用しています。いくつかの目標を念頭に置いてページを作成しました。ここでGOTO機能を乱用していますか？
- データベースに新しいエントリを作成できるようにしてください。
- データベース内の既存のエントリを表示できます。
- データベース内の既存のエントリを更新できること。
私はもともといくつかのPHPファイルを持っていましたが、GOTO関数を使って、同じページにとどまっている間に何が起こっているのかに応じて実行する必要があるさまざまな部分にコードを送り出しました。
私の質問は、それほど目障りではありませんが、このようにすることに没落していますか？将来的に私はそれを行うための他のよりきれいな方法を検討します（提案は歓迎です）。しかし、これは私のために今働いています。私はプロジェクトに移り、 CRM。これをベータ版と考えてください。私がすでにやったことに大きな欠点があるなら、Idは今それに取り組んでいますが、これが少なくとも軽度に合理的であれば、私は前進します。
<?php
// Include Connection Credentials
include("../../comm/com.php");
//Connection to Database
$link = mysqli_connect($servername, $username, $password, $dbname);
// Connection Error Check
if ($link->connect_errno) {
echo "Sorry, there seems to be a connection issue.";
exit;
}
// Define Empty Temporary Client ID
$new_client_id ="";
// Define Empty Success Message
$successful ="";
// Define Empty Error Messages
$firstnameErr ="";
$lastnameErr ="";
$addressErr ="";
$cityErr ="";
$stateErr ="" ;
$zipcodeErr ="";
$phoneErr ="";
$emailErr ="";
// CHECK FOR SEARCH PROCESS
if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (isset($_POST['searched'])) {
$client_id = $_POST['client_id'];
$buttontxt = "Update";
goto SearchReturnProcess;
}
}
// Retrieve Client ID
if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (empty($_POST['client_id'])) {
$buttontxt = "Create Client";
goto CreatNewClientProcess;
} else {
$client_id = $_POST['client_id'];
$buttontxt = "Update";
goto UpdateClientProcess;
}
}
// CONTINUE FOR NEW CLIENT
CreatNewClientProcess:
// Check For Missing Fields and report
if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (empty($_POST["firstname"])) {
$firstnameErr = "First name is a required field - please make entry below";
goto FinishUpProcess;
}
if (empty($_POST["lastname"])) {
$lastnameErr = "Last name is a required field - please make entry below";
goto FinishUpProcess;
}
if (empty($_POST["email"])) {
$emailErr = "Email is a required field - please make entry below";
goto FinishUpProcess;
}
if (empty($_POST["phone"])) {
$phoneErr = "Phone is a required field - please make entry below";
goto FinishUpProcess;
}
if (empty($_POST["address"])) {
$addressErr = "Address is a required field - please make entry below";
goto FinishUpProcess;
}
if (empty($_POST["city"])) {
$cityErr = "City is a required field - please make entry below";
goto FinishUpProcess;
}
if (empty($_POST["state"])) {
$stateErr = "State/Province is a required field - please make entry below";
goto FinishUpProcess;
}
if (empty($_POST["zipcode"])) {
$zipcodeErr = "Postal code is a required field - please make entry below";
goto FinishUpProcess;
}
}
// Prepared Statement For Database Search
if ($stmt = $link->prepare("INSERT INTO client (firstname, lastname, address, city, state, zipcode, phone, email) VALUES (?,?,?,?,?,?,?,?)")){
// Bind Search Variable
$stmt->bind_param('ssssssss', $firstname, $lastname, $address, $city, $state, $zipcode, $phone, $email);
// Define Form Field Input
$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];
$address = $_POST['address'];
$city = $_POST['city'];
$state = $_POST['state'];
$zipcode = $_POST['zipcode'];
$phone = $_POST['phone'];
$email = $_POST['email'];
// Execute the Statement
$stmt->execute();
}
// Close Statment
$stmt->close();
// Report Successful Entry
$successful = "Client Successfully Created!";
// Define New Client ID
$new_client_id = $link->insert_id;
// FINISH NEW CLIENT PROCESS
goto FinishUpProcess;
// CONTINUE FOR SEARCHED PROCESS
SearchReturnProcess:
// Prepared Statement For Database Search
$stmt = $link->prepare("SELECT firstname, lastname, address, city, state, zipcode, phone, email FROM client WHERE client_id=?");
// Bind Client ID into Statement
$stmt->bind_param('s', $client_id);
// Execute the Statement
$stmt->execute();
// Bind Variables to Prepared Statement
$stmt->bind_result($firstname, $lastname, $address, $city, $state, $zipcode, $phone, $email);
//fetch value
$stmt->fetch();
// Close Statment
$stmt->close();
// FINISH SEARCHED PROCESS
goto FinishUpProcess;
// CONTINUE FOR UPDATE CLIENT PROCESS
UpdateClientProcess:
// Prepared Statement For Database Search
if ($stmt = $link->prepare("UPDATE client SET firstname=?, lastname=?, address=?, city=?, state=?, zipcode=?, phone=?, email=? WHERE client_id=?")){
// Bind Search Variable
$stmt->bind_param('sssssssss', $firstname, $lastname, $address, $city, $state, $zipcode, $phone, $email, $client_id);
// Define Form Field Input
$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];
$address = $_POST['address'];
$city = $_POST['city'];
$state = $_POST['state'];
$zipcode = $_POST['zipcode'];
$phone = $_POST['phone'];
$email = $_POST['email'];
$client_id = $_POST['client_id'];
// Execute the Statement
$stmt->execute();
}
// Close Statment
$stmt->close();
// Report Successful Update
$successful = "Client Updated Successfully!";
// FINISH UPDATE PROCESS
goto FinishUpProcess;
// CONTINUE FOR FINISHING UP PROCESS
FinishUpProcess:
// Disconnect from Database
mysqli_close($link)
?>
<!DOCTYPE html>
<html>
<head>
<title>Client Information</title>
<link rel="stylesheet" href="styles.css">
</head>
<body>
<div class="container">
<form id="contact" action="" method="post">
<h4>enter client info below</h4>
<font color="red"><?php echo $successful; ?></font>
<fieldset>
<input name="client_id" value="<?php if (empty($_POST['client_id'])) { echo $new_client_id; } else { echo $_POST['client_id']; } ?>" type="hidden">
</fieldset>
<fieldset>
<font color="red"><?php echo $firstnameErr; ?></font>
<input name="firstname" value="<?php if (isset($_POST['client_id'])) { echo $firstname; } else { echo $_POST['firstname']; } ?>" placeholder="First Name" type="text" tabindex="1" autofocus>
</fieldset>
<fieldset>
<font color="red"><?php echo $lastnameErr; ?></font>
<input name="lastname" value="<?php if (isset($_POST['client_id'])) { echo $lastname; } else { echo $_POST['lastname']; } ?>" placeholder="Last Name" type="text" tabindex="2">
</fieldset>
<fieldset>
<font color="red"><?php echo $emailErr; ?></font>
<input name="email" value="<?php if (isset($_POST['client_id'])) { echo $email; } else { echo $_POST['email']; } ?>" placeholder="Email Address" type="email" tabindex="3">
</fieldset>
<fieldset>
<input name="mailinglist" id="checkbox" type="checkbox" checked>
<label>add to the mailing list</label>
</fieldset>
<fieldset>
<font color="red"><?php echo $phoneErr; ?></font>
<input name="phone" value="<?php if (isset($_POST['client_id'])) { echo $phone; } else { echo $_POST['phone']; } ?>" placeholder="Phone Number" type="tel" tabindex="4">
</fieldset>
<fieldset>
<font color="red"><?php echo $addressErr; ?></font>
<input name="address" value="<?php if (isset($_POST['client_id'])) { echo $address; } else { echo $_POST['address']; } ?>" placeholder="Street Address" type="text" tabindex="5">
</fieldset>
<fieldset>
<font color="red"><?php echo $cityErr; ?></font>
<input name="city" value="<?php if (isset($_POST['client_id'])) { echo $city; } else { echo $_POST['city']; } ?>" placeholder="City" type="text" tabindex="6">
</fieldset>
<fieldset>
<font color="red"><?php echo $stateErr; ?></font>
<input name="state" value="<?php if (isset($_POST['client_id'])) { echo $state; } else { echo $_POST['state']; } ?>" placeholder="State/Province" type="text" tabindex="7">
</fieldset>
<fieldset>
<font color="red"><?php echo $zipcodeErr; ?></font>
<input name="zipcode" value="<?php if (isset($_POST['client_id'])) { echo $zipcode; } else { echo $_POST['zipcode']; } ?>" placeholder="Postal Code" type="text" tabindex="8">
</fieldset>
<fieldset>
<font color="red"><?php echo $countryErr; ?></font>
<input name="country" value="<?php if (isset($_POST['client_id'])) { echo $country; } else { echo $_POST['country']; } ?>" placeholder="Country" type="text" tabindex="9">
</fieldset>
<fieldset>
<input name="vegan" type="checkbox">
<label>Vegan or Vegitarian</label>
</fieldset>
<fieldset>
<input name="smoker" type="checkbox">
<label>Smoker</label>
</fieldset>
<fieldset>
<textarea name="client_notes" placeholder="general notes" tabindex="10"></textarea>
</fieldset>
<fieldset>
<button name="submit" type="submit" data-submit="...Sending"><?php echo $buttontxt; ?></button>
</fieldset>
</form>
</div>
</body>
</html>
ようなものです:) –
GOTOとsertainlyを使用する理由は絶対にありませんこの状況でいいえ – RiggsFolly
古い、しかしまだ読む価値がある：http://homepages.cwi.nl/~storm/teaching/reader/Dijkstra68.pdf –