我在这里寻求一些帮助和一些解释.
我在POST输入时创建了一个带有几个输入字段和一些非常基本的PHP验证的HTML表单.我的验证只是检查该字段是否有数据,如果没有,它会提示用户通过显示错误在字段中输入数据.我希望最终POST这些输入,针对数据库检查它们,如果它们不存在,则将它们添加到数据库中.但是,这不是我的问题.
目前,我的目标是获取我想要POST的所有输入,并将其显示在错误显示区域下方的字段中.我曾希望只是回显数据但由于某种原因,并非所有输入的数据都出现.
在下面代码中的5个输入字段中,4个是基本输入字段,1个是文本区域.如果我在基本输入字段中输入任何内容,则只有最后一个输入将在我的显示区域中回显.如果我在字段1中输入内容并将其余部分留空,则会显示字段1.此外,如果我在文本区域输入内容,它将始终显示.最后,我的PHP验证似乎不适用于我的textarea类型输入(标记为'note'),如果'note'输入留空,则不会返回错误.任何人都可以解释:(1)如何修复它所有5个输入显示在显示div中？(2)为什么会发生这种情况？(3)如果文本区域(标记为"note")留空,为什么没有返回错误？
谢谢.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<?php
//form validation for general entry form
// define variables and set to empty values
$clientErr = $matterErr = $dateErr = $timeErr = $noteErr= "";
$client = $matter = $date = $time = $note = "";
//on post, check to see if variable is empty. if not empty
//parse it and assign value back to variable name
if ($_SERVER["REQUEST_METHOD"] == "POST") {
$complete = true;
$postArray = [];
if (empty($_POST["client"])) {
$clientErr = "*A client name is required. ";
$complete = false;
}else {
$client = test_input($_POST["client"]);
//$postArray[] = $client;
}
if (empty($_POST["matter"])) {
$matterErr = "*A matter name is required. ";
$complete = false;
}else {
$client = test_input($_POST["matter"]);
}
if (empty($_POST["date"])) {
$dateErr = "*A date is required. ";
$complete = false;
}else {
$client = test_input($_POST["date"]);
}
if (empty($_POST["time"])) {
$timeErr = "*A time entry is required. ";
$complete = false;
}else {
$client = test_input($_POST["time"]);
}
if (empty($_POST["note"])) {
$noteErr = "*A note is required. ";
$complete = false;
} else {
$note = test_input($_POST["note"]);
}
}
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
?>
<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" >
<label for="client">Client:</label>
<input type="text" placeholder = "Enter Client Name" name="client"> *
<label for="matter">Matter:</label>
<input type="text" placeholder = "Enter Matter Name" name="matter"> *
<label for="date">Date:</label>
<input type="text" placeholder = "Enter Date" name="date"> *
<label for="time">Time:</label>
<input type="text" placeholder ="Time to nearest tenth hour" name="time"> *
<label for="note">Note:</label>
<textarea name="note" placeholder ="Enter Any Notes" rows="4" cols="40"></textarea>
<input type="submit" name="submit" value="Submit" class="submitbutton">
</form>
<div class="errorDiv">
<?php
echo $clientErr;
echo $matterErr;
echo $dateErr;
echo $timeErr;
?>
</div>
<div class ="displayDiv">
<?php
echo "<h2>Your Input:</h2>";
echo $client;
echo "<br>";
echo $matter;
echo "<br>";
echo $date;
echo "<br>";
echo $time;
echo "<br>";
echo $note;
?>
</div>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<?php
//form validation for general entry form
// define variables and set to empty values
$clientErr = $matterErr = $dateErr = $timeErr = $noteErr= "";
$client = $matter = $date = $time = $note = "";
//on post, check to see if variable is empty. if not empty
//parse it and assign value back to variable name
if ($_SERVER["REQUEST_METHOD"] == "POST") {
$complete = true;
$postArray = [];
if (empty($_POST["client"])) {
$clientErr = "*A client name is required. ";
$complete = false;
}else {
$client = test_input($_POST["client"]);
//$postArray[] = $client;
}
if (empty($_POST["matter"])) {
$matterErr = "*A matter name is required. ";
$complete = false;
}else {
$matter = test_input($_POST["matter"]); //remove $client and assign value to $matter
}
if (empty($_POST["date"])) {
$dateErr = "*A date is required. ";
$complete = false;
}else {
$date = test_input($_POST["date"]); //remove $client and assign value to $date
}
if (empty($_POST["time"])) {
$timeErr = "*A time entry is required. ";
$complete = false;
}else {
$time = test_input($_POST["time"]); //remove $client and assign value to $time
}
if (empty($_POST["note"])) {
$noteErr = "*A note is required. ";
$complete = false;
} else {
$note = test_input($_POST["note"]);
}
}
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
?>
<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" >
<label for="client">Client:</label>
<input type="text" placeholder = "Enter Client Name" name="client"> *
<label for="matter">Matter:</label>
<input type="text" placeholder = "Enter Matter Name" name="matter"> *
<label for="date">Date:</label>
<input type="text" placeholder = "Enter Date" name="date"> *
<label for="time">Time:</label>
<input type="text" placeholder ="Time to nearest tenth hour" name="time"> *
<label for="note">Note:</label>
<textarea name="note" placeholder ="Enter Any Notes" rows="4" cols="40"></textarea>
<input type="submit" name="submit" value="Submit" class="submitbutton">
</form>
<div class="errorDiv">
<?php
echo $clientErr;
echo $matterErr;
echo $dateErr;
echo $timeErr;
echo $noteErr; // echo noteerror here.........
?>
</div>
<div class ="displayDiv">
<?php
echo "<h2>Your Input:</h2>";
echo $client;
echo "<br>";
echo $matter;
echo "<br>";
echo $date;
echo "<br>";
echo $time;
echo "<br>";
echo $note;
?>
</div>
</body>
</html>
在这里,您分配到单个变量的所有值$client和回声所有不同的变量,以便将值分配给特定变量一样$matter,$date,$time.而你却忘了$noteerror在错误消息中回应.