我正在尝试在与表单相同的页面上显示php错误消息，但无法打印此内容。
表单正在运行，错误消息也出现了，但问题只是在另一页上重定向。
这是form.php
<form action="contact_mail.php" method="post" name="contact_Form" id="contactform">
<div class="row">
<div class="col-md-12 page_subtitle">Get in Touch</div>
</div>
<div class="row mt-30">
<div class="col-md-12 form-group"><input type="text" value="<?php if (isset($errors['name_co'])): echo $errors; endif; ?>" placeholder="Name" class="form-control" name="name_co" ></div>
</div>
<div class="row">
<div class="col-md-6 form-group"><input type="text" id="txtEmail" value="" placeholder="Email ID" class="form-control" name="email_co" pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,63}$" required /></div>
<div class="col-md-6 form-group"><input type="text" value="" placeholder="Phone Number" class="form-control" name="mobile" pattern="[789][0-9]{9}" required /></div>
</div>
<div class="row">
<div class="col-md-12 form-group"><textarea cols="45" rows="6" placeholder="Message" class="form-control" name="comments_co" required/></textarea></div>
</div>
<div class="row">
<div class="col-md-12 form-group"><?php
$a_con=rand(0,9);
$b_con=rand(0,9);
?>
Human Test <?php echo $a_con." + ".$b_con?> =
</div>
</div>
<div class="row">
<div class="col-md-12 form-group"><input type="text" value="" placeholder="Human Test" class="form-control" name="value_num" required/>
<input class="input" name="captcha_num_hidden_contact" id="captcha_num_hidden_contact" type="hidden" value="<?php echo $a_con+$b_con;?>"/>
</div>
</div>
<div class="row">
<div class="col-md-12 form-group"><input type="submit" name="submit" class="btn btn-submit" /></div>
</div>
</form>
这是 contact_mail.php
<?php
$errors = array(); // array to hold validation errors
$data = array(); // array to pass back data
//error_reporting(0);
// validate the variables ======================================================
// if any of these variables don't exist, add an error to our $errors array
if (isset($_POST['submit'])){
if (empty($_POST['name_co']))
$errors['name_co'] = 'Name is required.';
if (empty($_POST['email_co']))
$errors['email_co'] = 'Email is required.';
if (empty($_POST['mobile'])){
$errors['mobile'] = 'Mobile no is required.';
} else if(strlen((string)$_POST['mobile']) < 10){
$errors['mobile'] = 'Please enter a valid Mobil No.';
}
if (empty($_POST['comments_co']))
$errors['comments_co'] = 'Comments is required.';
if (empty($_POST['value_num'])) {
$errors['value_num'] = 'Human Test is required.';
}
else if ($_POST['captcha_num_hidden_contact'] != $_POST['value_num']) {
$errors['captcha_num_hidden_contact'] = 'Please enter the correct result.';
}
}
// return a response ===========================================================
// if there are any errors in our errors array, return a success boolean of false
if (!empty($errors)) {
// if there are items in our errors array, return those errors
$data['success'] = false;
$data['errors'] = $errors;
} else {
// if there are no errors process our form, then return a message
// DO ALL YOUR FORM PROCESSING HERE
// THIS CAN BE WHATEVER YOU WANT TO DO (LOGIN, SAVE, UPDATE, WHATEVER)
$email_subject = 'Query From Contact Us';
// $message = '<div><strong>Query From Contact Us : </strong></div>';
// $message .= '<div>---------------------------------------- </div>';
// $message .= '<div><strong>Name: </strong>' . $_POST['name_co'] . '</div>';
// $message .= '<div><strong>Email: </strong>' . $_POST['email_co'] . '</div>';
// $message .= '<div><strong>Service: </strong>' . $_POST['option_type'] . '</div>';
// $message .= '<div><strong>Subject: </strong>' . $_POST['subject_co'] . '</div>';
// $message .= '<div><strong>Mobile: </strong>' . $_POST['mobile'] . '</div>';
// $message .= '<div><strong>Comments: </strong>' . $_POST['comments_co'] . '</div>';
$email_subject1 = 'Acknowledgement';
$headers1 = "MIME-Version: 1.0\r\n";
$headers1 .= "Content-type: text/html; charset=iso-8859-1" . "\r\n";
$headers1 .= "From: "."\r\n";
$mailstatus1 = mail($_POST['email_co'], $email_subject1, $message1, $headers1, "");
// show a message of success and provide a true success variable
$data['success'] = true;
$data['message'] = 'Your Query has been successfully submit. We will contact you very soon!!';
header("location:thank-you.php");
exit;
}
//echo json_encode($data);
// return all our data to an AJAX call
我的主要问题是我想在表单页面上打印错误消息，但我无法打印它。
答案 0 :(得分：0)
解决方案很简单。您只需输出具有以下错误的数组
if (!empty($errors)) {
你可以这样做：
echo implode('<br>', $data['errors']);
implode（）会将数组放在一个字符串中。
当它被内爆时放在每个数组元素之间。
答案 1 :(得分：0)
如评论中所述，我在一个页面上实现了您的代码。 改变了你的
<form action="contact_mail.php" method="post" name="contact_Form" id="contactform">
到
<form target="_self" method="post" name="contact_Form" id="contactform" enctype="multipart/form-data">
并添加了打印错误，如@Bernhard答案
echo implode('<br>', $data['errors']);
此行中也改变了模式
<div class="col-md-6 form-group"><input type="text" value="" placeholder="Phone Number" class="form-control" name="mobile" pattern="[123456789]{9}" required /></div>
我想说的是，当你准备好考虑用户输入验证时，不仅仅是html和使用库发送电子邮件，如PHPMailer。
这是完整的代码
<?php
$errors = array(); // array to hold validation errors
$data = array(); // array to pass back data
//error_reporting(0);
// validate the variables ======================================================
// if any of these variables don't exist, add an error to our $errors array
if (isset($_POST['submit'])){
if (empty($_POST['name_co']))
$errors['name_co'] = 'Name is required.';
if (empty($_POST['email_co']))
$errors['email_co'] = 'Email is required.';
if (empty($_POST['mobile'])){
$errors['mobile'] = 'Mobile no is required.';
} else if(strlen((string)$_POST['mobile']) < 10){
$errors['mobile'] = 'Please enter a valid Mobil No.';
}
if (empty($_POST['comments_co']))
$errors['comments_co'] = 'Comments is required.';
if (empty($_POST['value_num'])) {
$errors['value_num'] = 'Human Test is required.';
}
else if ($_POST['captcha_num_hidden_contact'] != $_POST['value_num']) {
$errors['captcha_num_hidden_contact'] = 'Please enter the correct result.';
}
}
// return a response ===========================================================
// if there are any errors in our errors array, return a success boolean of false
if (!empty($errors)) {
// if there are items in our errors array, return those errors
$data['success'] = false;
$data['errors'] = $errors;
echo implode('<br>', $data['errors']);
} else {
// if there are no errors process our form, then return a message
// DO ALL YOUR FORM PROCESSING HERE
// THIS CAN BE WHATEVER YOU WANT TO DO (LOGIN, SAVE, UPDATE, WHATEVER)
$email_subject = 'Query From Contact Us';
// $message = '<div><strong>Query From Contact Us : </strong></div>';
// $message .= '<div>---------------------------------------- </div>';
// $message .= '<div><strong>Name: </strong>' . $_POST['name_co'] . '</div>';
// $message .= '<div><strong>Email: </strong>' . $_POST['email_co'] . '</div>';
// $message .= '<div><strong>Service: </strong>' . $_POST['option_type'] . '</div>';
// $message .= '<div><strong>Subject: </strong>' . $_POST['subject_co'] . '</div>';
// $message .= '<div><strong>Mobile: </strong>' . $_POST['mobile'] . '</div>';
// $message .= '<div><strong>Comments: </strong>' . $_POST['comments_co'] . '</div>';
$email_subject1 = 'Acknowledgement';
$headers1 = "MIME-Version: 1.0\r\n";
$headers1 .= "Content-type: text/html; charset=iso-8859-1" . "\r\n";
$headers1 .= "From: "."\r\n";
$mailstatus1 = mail($_POST['email_co'], $email_subject1, $message1, $headers1, "");
// show a message of success and provide a true success variable
$data['success'] = true;
$data['message'] = 'Your Query has been successfully submit. We will contact you very soon!!';
//header("location:thank-you.php");
}
?>
<form target="_self" method="post" name="contact_Form" id="contactform" enctype="multipart/form-data">
<div class="row">
<div class="col-md-12 page_subtitle">Get in Touch</div>
</div>
<div class="row mt-30">
<div class="col-md-12 form-group"><input type="text" value="<?php if (isset($errors['name_co'])): echo $errors; endif; ?>" placeholder="Name" class="form-control" name="name_co" ></div>
</div>
<div class="row">
<div class="col-md-6 form-group"><input type="text" id="txtEmail" value="" placeholder="Email ID" class="form-control" name="email_co" pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,63}$" required /></div>
<div class="col-md-6 form-group"><input type="text" value="" placeholder="Phone Number" class="form-control" name="mobile" pattern="[123456789]{9}" required /></div>
</div>
<div class="row">
<div class="col-md-12 form-group"><textarea cols="45" rows="6" placeholder="Message" class="form-control" name="comments_co" required/></textarea></div>
</div>
<div class="row">
<div class="col-md-12 form-group"><?php
$a_con=rand(0,9);
$b_con=rand(0,9);
?>
Human Test <?php echo $a_con." + ".$b_con?> =
</div>
</div>
<div class="row">
<div class="col-md-12 form-group"><input type="text" value="" placeholder="Human Test" class="form-control" name="value_num" required/>
<input class="input" name="captcha_num_hidden_contact" id="captcha_num_hidden_contact" type="hidden" value="<?php echo $a_con+$b_con;?>"/>
</div>
</div>
<div class="row">
<div class="col-md-12 form-group"><input type="submit" name="submit" class="btn btn-submit" /></div>
</div>
</form>