Question

我正在进行的项目基本上涉及输入框并将它们存储到mysql数据库中。我尝试使用javascript生成此表单，如果需要可以添加另一个表单。我认为我遇到的问题是让它分配一个不同的＆＃34;名称＆＃34;到第二个生成的表格。 ex red，red1，red2等。然后还试图让它与php-mysqli一起工作。

到目前为止，我已经能够将其发布到桌面上，但是它将值发布在第二组输入框中。有人可以提供一些建议吗？

＆＃13;

<form id="color_form" action="postcolors.php" method="post">

<input id="name" class="color_entry" action="postcolors.php" method="post" name="name" placeholder="song name" style="background-image: url("data:image/png;base64,iVBORw0KGgoAAAA…nt: scroll; background-position: right center; cursor: auto;"></input>
<input id="red" class="color_entry" action="" method="post" name="red" placeholder="red"></input>
<input id="green" class="color_entry" action="" method="post" name="green" placeholder="green"></input>
<input id="blue" class="color_entry" action="" method="post" name="blue" placeholder="blue"></input>
<input id="color" class="color_entry" action="" method="post" name="color" placeholder="color"></input>
<input id="name" class="color_entry" action="postcolors.php" method="post" name="name" placeholder="song name"></input>
<input id="red" class="color_entry" action="" method="post" name="red" placeholder="red"></input>
<input id="green" class="color_entry" action="" method="post" name="green" placeholder="green"></input>
<input id="blue" class="color_entry" action="" method="post" name="blue" placeholder="blue"></input>
<input id="color" class="color_entry" action="" method="post" name="color" placeholder="color"></input>
<input type="submit" value="submit" action="postcolors.php" method="post"></input>

</form>

＆＃13;

$song=mysqli_real_escape_string($connect, $_POST['name']);
$song = str_replace(' ', '', $song);
mysqli_query($connect, "CREATE TABLE $song (id int(4) NOT NULL auto_increment, red int(2) NOT NULL, green int(2) NOT NULL, blue int(2) NOT NULL, color varchar(30) NOT NULL, index(id))");

$red=mysqli_real_escape_string($connect, $_POST['red']);
$green=mysqli_real_escape_string($connect, $_POST['green']);
$blue=mysqli_real_escape_string($connect, $_POST['blue']);
$color=mysqli_real_escape_string($connect, $_POST['color']);


mysqli_query($connect, "INSERT INTO $song (red,green,blue,color) VALUES ('$red', '$green', '$blue', '$color')");

＆＃13;

Answer 1

首先，id=""在页面上必须是唯一的，因此，除非您实际在javascript中使用id's，否则可以将其关闭。如果您在javascript中使用它们，则必须考虑使它们成为唯一的方法。

其次，您可以要求浏览器使用name="color[]"作为数组而不是标量值返回字段名称。

所以更改名称字段如下： -

<form id="color_form" action="postcolors.php" method="post">

<input class="color_entry" action="postcolors.php" method="post" name="name[]" placeholder="song name" style="background-image: url("data:image/png;base64,iVBORw0KGgoAAAA…nt: scroll; background-position: right center; cursor: auto;"></input>
<input class="color_entry" action="" method="post" name="red[]" placeholder="red"></input>
<input class="color_entry" action="" method="post" name="green[]" placeholder="green"></input>
<input class="color_entry" action="" method="post" name="blue[]" placeholder="blue"></input>
<input class="color_entry" action="" method="post" name="color[]" placeholder="color"></input>
<input class="color_entry" action="postcolors.php" method="post" name="name[]" placeholder="song name"></input>
<input class="color_entry" action="" method="post" name="red[]" placeholder="red"></input>
<input class="color_entry" action="" method="post" name="green[]" placeholder="green"></input>
<input class="color_entry" action="" method="post" name="blue[]" placeholder="blue"></input>
<input class="color_entry" action="" method="post" name="color[]" placeholder="color"></input>
<input type="submit" value="submit" action="postcolors.php" method="post"></input>

</form>

现在$ _POST会有$ _POST ['color'] [0]和$ _POST ['color'] [1]，所以你可以把处理改为像

foreach ($_POST['name'] as $idx => $name ) {

    mysqli_query($connect, 
                 "INSERT INTO $song (red,green,blue,color) 
                  VALUES ('{$_POST['red'][$idx']}', 
                          '{$_POST['green'][$idx']}', 
                          '{$_POST['blue'][$idx']}', 
                          '{$_POST['color'][$idx']}'
                         )"
                );
}

Answer 2

IIRC可以使用红色[]作为框的名称，这将使$ _POST [＆＃39; red＆＃39;]数组迭代。

多次生成相同的输入

2 个答案: