Question

抱歉我的英文！我在stackoverflow上找到了以下代码，我只是尝试添加更多字段（我需要4）而没有成功。我的其他2个字段在我的data.txt上保持空白。如何轻松添加2个字段？提前感谢您的帮助。

表格：

<form action="myprocessingscript.php" method="POST">
<input name="field1" type="text" />
<input name="field2" type="text" />
<input type="submit" name="submit" value="Save Data">

<?php
if(isset($_POST['field1']) && isset($_POST['field2'])) {
$data = $_POST['field1'] . '-' . $_POST['field2'] . "\n";
$ret = file_put_contents('/tmp/mydata.txt', $data, FILE_APPEND | LOCK_EX);
if($ret === false) {
    die('There was an error writing this file');
}
else {
    echo "$ret bytes written to file";
}
}
else {
die('no post data to process');
}

Answer 1

如果有4个输入，请说： -

<input name="field1" type="text" />
<input name="field2" type="text" />
<input name="field3" type="text" />
<input name="field4" type="text" />

然后改变

if(isset($_POST['field1']) && isset($_POST['field2'])) {
    $data = $_POST['field1'] . '-' . $_POST['field2'] . "\n";
    ...
    ...
}

到

if(isset($_POST['field1']) && isset($_POST['field2']) && isset($_POST['field3'])  && isset($_POST['field4']) ) {
    $data = "{$_POST['field1']}-{$_POST['field2']}-{$_POST['field3']}-{$_POST['field4']} \n";
    ...
    ...
}

Answer 2

您还需要将字段添加到HTML表单中：

<form action="myprocessingscript.php" method="POST">
<input name="field1" type="text" />
<input name="field2" type="text" />
<input name="field3" type="text" />
<input name="field4" type="text" />
<input type="submit" name="submit" value="Save Data">

并且，除了将它们添加到if语句之外，还要将它们添加到从$_POST变量获取数据的行中：

$data = $_POST['field1'] . '-' . $_POST['field2'] . '-' . $_POST['field3'] . '-' . $_POST['field4'] . "\n";

PHP从多个字段的输入中写入txt文件

2 个答案: