Question

我正在尝试检查部件中的条形码，因为混合的风险。条形码由24个字符组成，前14个字符是部件号，因为最后10个字符是计数器，是不是检查前14个字符的解决方案？

以下是条形码示例：308739420 D52 AD1702600131

混合部件是因为来自另一部分的下一个条形码： 308739420的 B0L AD1702600131

因此，我的问题是：我可以在输入数据库中的前14个字符时检查吗？

我可以这么说，告诉我今天用于在数据库中引入条形码的脚本：

<html>
<head>
    <title>insert data in database using mysqli</title>
    <link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
 
<div id="main">
    <h1>Barcode checker</h1>
        <div id="login"><hr/>
            <form action="" method="post">
                <label>Barcode :</label>
                <input type="text" name="TAK0010barcode" id="name" required="required" placeholder="Please enter barcode"/><br /><br />
                <input type="submit" value=" Submit " name="submit"/><br />
            </form>
        </div>
</div>
 
<?php
if(isset($_POST["submit"])){
$servername = "localhost";
$username = "barcode";
$password = "barcode";
$dbname = "barcode";
 
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
 
$sql = "INSERT INTO tak0010 (TAK0010barcode)
VALUES ('".$_POST["TAK0010barcode"]."')";
 
if ($conn->query($sql) === TRUE) {
    echo "<span style='color: green; font-size: 40px; font-weight: bold'>SUCCES!!</span>";
} else {
    echo "<span style='color: red; font-size: 40px; font-weight: bold'>EROARE!!</span>";
}
 
$conn->close();
}
?>
</body>
</html>

谢谢。

Answer 1

您可以使用PHP函数substr()：

$control = '308739420D52AD';
$test = substr($_POST["TAK0010barcode"], 0, strlen($control));

if($control == $test){

   $sql = "INSERT INTO tak0010 (TAK0010barcode)
           VALUES ('".$_POST["TAK0010barcode"]."')";
// etc...

文档：http://php.net/manual/en/function.substr.php

UPDATE：扩展示例，用您的php代码替换所有内容：

<?php
    if(isset($_POST["submit"])){
        $servername = "localhost";
        $username = "barcode";
        $password = "barcode";
        $dbname = "barcode";

        // Create connection
        $conn = new mysqli($servername, $username, $password, $dbname);
        // Check connection
        if ($conn->connect_error) {
            die("Connection failed: " . $conn->connect_error);
        }

    $control = '308739420D52AD'; // YOUR BAR CODE IDENTIFIER
    $test = substr($_POST["TAK0010barcode"], 0, strlen($control)); // BEGINNING OF THE POSTED BAR CODE.. SET TO SAME LENGTH AS BAR CODE IDENTIFIER

    if($control == $test){ // CHECK IF STRINGS ARE ALIKE

        $sql = "INSERT INTO tak0010 (TAK0010barcode)
                VALUES ('".$_POST["TAK0010barcode"]."')";

        if ($conn->query($sql) === TRUE) {
            echo "<span style='color: green; font-size: 40px; font-weight: bold'>SUCCES!!</span>";
        } else {
            echo "<span style='color: red; font-size: 40px; font-weight: bold'>EROARE!!</span>";
        }

        $conn->close();
    } else { // STRINGS DO NOT MATCH!
        echo "<span style='color: red; font-size: 40px; font-weight: bold'>The barcode don't match the part number. Please use a barcode starting with ".$control."</span>";
    }
}
?>

插入后检查前14个字符的MySQL

1 个答案: