phpmailer中的表单字段长度验证

我想按最小和最大长度验证表单字段

我已经在验证它们是否为空或电子邮件地址是否无效。我想为每个字段添加额外的长度要求（最小长度和最大长度）。这方面的最佳做法是什么

摘自我的

process.php

文件：

require_once('includes/phpmailer-config.php');
require_once('includes/phpmailer/class.phpmailer.php');

// other stuff here

// Validate each form field
if (empty($name)) {
    $errors['name'] = MIA_NAME;    // Error message for missing name
}
if (empty($email)) {
    $errors['email'] = MIA_ADDR;   // Error message for missing email address
}
elseif (!(filter_var($email, FILTER_VALIDATE_EMAIL))) {
    $errors['email'] = INV_ADDR;   // Error message for invalid email address
}
if (empty($message)) {
    $errors['message'] = MIA_MESG; // Error message for missing message
}

// other stuff here

define ('MIA_NAME', 'A Full Name is Required.');       // Error for missing name
define ('LG_NAME',  {5,50}');                          // Min. length: 5, Max. length: 50
define ('TS_NAME',  'Name is too Short.');             // Error for name too short 
define ('TL_NAME',  'Name is too Long.');              // Error for name too long

define ('MIA_ADDR', 'An Email Address is Required.');  // Error for missing email address
define ('LG_ADDR',  {8,50}');                          // Min. length: 8, Max. length: 50
define ('TS_ADDR',  'Email Address is too Short.');    // Error for email too short 
define ('TL_ADDR',  'Email Address is too Long.');     // Error for email too long
define ('INV_ADDR', 'We need a valid email address.'); // Error for invalid email address

define ('MIA_MESG', 'A Message is Required.');         // Error message for missing message
define ('LG_MESG',  {20,7500}');                       // Min. length: 20, Max. length: 7500
define ('TS_MESG',  'Message is too Short.');          // Error for message too short 
define ('TL_MESG',  'Message is too Long.');           // Error for message too long

摘自我的

phpmailer config.php

文件：

require_once('includes/phpmailer-config.php');
require_once('includes/phpmailer/class.phpmailer.php');

// other stuff here

// Validate each form field
if (empty($name)) {
    $errors['name'] = MIA_NAME;    // Error message for missing name
}
if (empty($email)) {
    $errors['email'] = MIA_ADDR;   // Error message for missing email address
}
elseif (!(filter_var($email, FILTER_VALIDATE_EMAIL))) {
    $errors['email'] = INV_ADDR;   // Error message for invalid email address
}
if (empty($message)) {
    $errors['message'] = MIA_MESG; // Error message for missing message
}

// other stuff here

define ('MIA_NAME', 'A Full Name is Required.');       // Error for missing name
define ('LG_NAME',  {5,50}');                          // Min. length: 5, Max. length: 50
define ('TS_NAME',  'Name is too Short.');             // Error for name too short 
define ('TL_NAME',  'Name is too Long.');              // Error for name too long

define ('MIA_ADDR', 'An Email Address is Required.');  // Error for missing email address
define ('LG_ADDR',  {8,50}');                          // Min. length: 8, Max. length: 50
define ('TS_ADDR',  'Email Address is too Short.');    // Error for email too short 
define ('TL_ADDR',  'Email Address is too Long.');     // Error for email too long
define ('INV_ADDR', 'We need a valid email address.'); // Error for invalid email address

define ('MIA_MESG', 'A Message is Required.');         // Error message for missing message
define ('LG_MESG',  {20,7500}');                       // Min. length: 20, Max. length: 7500
define ('TS_MESG',  'Message is too Short.');          // Error for message too short 
define ('TL_MESG',  'Message is too Long.');           // Error for message too long

---

编辑：多亏了Amal的回答，我最终使用了以下内容：

摘自

phpmailer config.php

：

define ('MIA_NAME', 'A Full Name is Required.');       // Error for missing name
define ('MIN_NAME', 5);                                // Min. length for name 
define ('MAX_NAME', 50);                               // Max. length for name
define ('TS_NAME',  'Name is too Short.');             // Error for name too short 
define ('TL_NAME',  'Name is too Long.');              // Error for name too long

define ('MIA_ADDR', 'An Email Address is Required.');  // Error for missing email address
define ('MIN_ADDR', 8);                                // Min. length for email address
define ('MAX_ADDR', 50);                               // Max. length for email address
define ('TS_ADDR',  'Email Address is too Short.');    // Error for email too short 
define ('TL_ADDR',  'Email Address is too Long.');     // Error for email too long
define ('INV_ADDR', 'We need a valid email address.'); // Error for invalid email address

define ('MIA_MESG', 'A Message is Required.');         // Error message for missing message
define ('MIN_MESG', 20);                               // Min. length for message
define ('MAX_MESG', 7500);                             // Max. length for message
define ('TS_MESG',  'Message is too Short.');          // Error for message too short 
define ('TL_MESG',  'Message is too Long.');           // Error for message too long

// Validate each form field
if (empty($name)) {
    $errors['name'] = MIA_NAME; }    // Missing name
elseif (strlen(trim($_POST['name'])) < MIN_NAME ) {
    $errors['name'] = TS_NAME; }     // Name too short
elseif (strlen(trim($_POST['name'])) > MAX_NAME ) {
    $errors['name'] = TL_NAME; }     // Name too long

if (empty($email)) {
    $errors['email'] = MIA_ADDR; }   // Missing email address
elseif (strlen(trim($_POST['email'])) < MIN_ADDR ) {
    $errors['email'] = TS_ADDR; }    // Email too short
elseif (strlen(trim($_POST['email'])) > MAX_ADDR ) {
    $errors['email'] = TL_ADDR; }    // Email too long
elseif (!(filter_var($email, FILTER_VALIDATE_EMAIL))) {
    $errors['email'] = INV_ADDR; }   // Invalid email address

if (empty($message)) {
    $errors['message'] = MIA_MESG; } // Missing message
elseif (strlen(trim($_POST['message'])) < MIN_MESG ) {
    $errors['message'] = TS_MESG; }  // Message too short
elseif (strlen(trim($_POST['message'])) > MAX_MESG ) {
    $errors['message'] = TL_MESG; }  // Message too long

摘自

process.php

：

define ('MIA_NAME', 'A Full Name is Required.');       // Error for missing name
define ('MIN_NAME', 5);                                // Min. length for name 
define ('MAX_NAME', 50);                               // Max. length for name
define ('TS_NAME',  'Name is too Short.');             // Error for name too short 
define ('TL_NAME',  'Name is too Long.');              // Error for name too long

define ('MIA_ADDR', 'An Email Address is Required.');  // Error for missing email address
define ('MIN_ADDR', 8);                                // Min. length for email address
define ('MAX_ADDR', 50);                               // Max. length for email address
define ('TS_ADDR',  'Email Address is too Short.');    // Error for email too short 
define ('TL_ADDR',  'Email Address is too Long.');     // Error for email too long
define ('INV_ADDR', 'We need a valid email address.'); // Error for invalid email address

define ('MIA_MESG', 'A Message is Required.');         // Error message for missing message
define ('MIN_MESG', 20);                               // Min. length for message
define ('MAX_MESG', 7500);                             // Max. length for message
define ('TS_MESG',  'Message is too Short.');          // Error for message too short 
define ('TL_MESG',  'Message is too Long.');           // Error for message too long

// Validate each form field
if (empty($name)) {
    $errors['name'] = MIA_NAME; }    // Missing name
elseif (strlen(trim($_POST['name'])) < MIN_NAME ) {
    $errors['name'] = TS_NAME; }     // Name too short
elseif (strlen(trim($_POST['name'])) > MAX_NAME ) {
    $errors['name'] = TL_NAME; }     // Name too long

if (empty($email)) {
    $errors['email'] = MIA_ADDR; }   // Missing email address
elseif (strlen(trim($_POST['email'])) < MIN_ADDR ) {
    $errors['email'] = TS_ADDR; }    // Email too short
elseif (strlen(trim($_POST['email'])) > MAX_ADDR ) {
    $errors['email'] = TL_ADDR; }    // Email too long
elseif (!(filter_var($email, FILTER_VALIDATE_EMAIL))) {
    $errors['email'] = INV_ADDR; }   // Invalid email address

if (empty($message)) {
    $errors['message'] = MIA_MESG; } // Missing message
elseif (strlen(trim($_POST['message'])) < MIN_MESG ) {
    $errors['message'] = TS_MESG; }  // Message too short
elseif (strlen(trim($_POST['message'])) > MAX_MESG ) {
    $errors['message'] = TL_MESG; }  // Message too long

//验证每个表单字段
if（空（$name））{
$errors['name']=MIA_name；}//缺少名称
elseif（strlen（trim（$_POST['name']））MAX_name）{
$errors['name']=TL_name；}//名称太长
如果（空（$email））{
$errors['email']=MIA_ADDR；}//缺少电子邮件地址
elseif（strlen（trim（$_POST['email']））MAX\u ADDR）{
$errors['email']=TL_ADDR；}//电子邮件太长
elseif（！（过滤器变量（$email，过滤器验证电子邮件）））{
$errors['email']=INV_ADDR；}//无效的电子邮件地址
if（空（$message））{
$errors['message']=MIA_MESG；}//缺少消息
elseif（strlen（修剪（$_POST['message']））MAX_MESG）{
$errors['message']=TL_MESG；}//消息太长

在HTML5中，您可以使用该属性，如下所示：

<input pattern=".{5,25}" title="Input 5 to 25 characters">

将其集成到您当前的代码中，将类似于：

if (empty($name)) {
    $errors['name'] = MIA_NAME;    // Error message for missing name
}

if (strlen(trim($_POST['name'])) >= 5) {
    # code ...
} elseif (strlen(trim($_POST['name'])) <= 25) {
    # code ...
}

if (empty($email)) {
    $errors['email'] = MIA_ADDR;   // Error message for missing email address
} elseif (!(filter_var($email, FILTER_VALIDATE_EMAIL))) {
    $errors['email'] = INV_ADDR;   // Error message for invalid email address
}

if (empty($message)) {
    $errors['message'] = MIA_MESG; // Error message for missing message
}

if（空（$name））{
$errors['name']=MIA_name；//缺少名称的错误消息
}
如果（strlen（修剪（$_POST['name']）>=5）{
#代码。。。
}elseif（strlen（trim（$\u POST['name']））在HTML5中，您可以使用该属性，如下所示：

<input pattern=".{5,25}" title="Input 5 to 25 characters">

将其集成到您当前的代码中，将类似于：

if (empty($name)) {
    $errors['name'] = MIA_NAME;    // Error message for missing name
}

if (strlen(trim($_POST['name'])) >= 5) {
    # code ...
} elseif (strlen(trim($_POST['name'])) <= 25) {
    # code ...
}

if (empty($email)) {
    $errors['email'] = MIA_ADDR;   // Error message for missing email address
} elseif (!(filter_var($email, FILTER_VALIDATE_EMAIL))) {
    $errors['email'] = INV_ADDR;   // Error message for invalid email address
}

if (empty($message)) {
    $errors['message'] = MIA_MESG; // Error message for missing message
}

if（空（$name））{
$errors['name']=MIA_name；//缺少名称的错误消息
}
如果（strlen（修剪（$_POST['name']）>=5）{
#代码。。。
}elseif（strlen（trim（$_POST['name']））在我自己的验证逻辑中，我应该在哪里集成它呢？我特别指的是
if
和
elseif
语句的顺序。我还希望对于太短的字符串和太长的字符串使用不同的消息。为了使这个模块化，我想在我的
config.php
文件中指定长度。@Daze:我已经更新了answ但是，我不确定如何从配置文件（
{207500}
）中读取允许的最大和最小长度，所以我就到此为止。我认为最好为最小和最大长度定义多个常量，并使用
if-elseif
块。再次感谢，Amal。为最小值和最大值使用单独的常量确实会更简单。我在表单中集成了额外的
if
和
elseif
语句感谢你更新的答案。作为参考，我已经用我最终使用的代码更新了我的问题。我应该在哪里将其集成到我自己的验证逻辑中？我特别指的是
if
和
elseif
语句的顺序。我还希望对于过短的字符串和过长的字符串使用不同的消息。要制作此mod当然，我想在我的
config.php
文件中指定长度。@Daze:我已经更新了答案。但是，我不确定如何从配置文件（
{207500}
）中读取允许的最大和最小长度，所以我就到此为止。我认为最好为最小和最大长度定义多个常量，并使用
if-elseif
块。再次感谢，Amal。为最小值和最大值使用单独的常量确实会更简单。我在表单中集成了额外的
if
和
elseif
语句感谢你更新的答案。作为参考，我已经用我最后使用的代码更新了我的问题。