Can';t将值赋给错误数组以处理PHP中的错误
我试图用PHP制作一个POST请求表单。当用户提交表单时,代码应该验证输入并将其放入名为errors的数组中。然后,系统检查该数组是否为空。如果它有什么东西,它会撞上一个警报框 我面临的问题是,无论我如何分配值,错误数组仍然是空的。下面是完整的代码Can';t将值赋给错误数组以处理PHP中的错误,php,arrays,Php,Arrays,我试图用PHP制作一个POST请求表单。当用户提交表单时,代码应该验证输入并将其放入名为errors的数组中。然后,系统检查该数组是否为空。如果它有什么东西,它会撞上一个警报框 我面临的问题是,无论我如何分配值,错误数组仍然是空的。下面是完整的代码 <?php $errors = array('name' => '', 'age' => '' ); // array containing errors // check get request. The GE
<?php
$errors = array('name' => '', 'age' => '' ); // array containing errors
// check get request. The GET will be an array storing data to be transfered to server as GET.
// _ is global var. GET belows will take the value when the submit button pressed
if(isset($_POST['submit'])){ // when user submit POST request
errCheck();
if(!empty($errors['name'])) {
phpAlert($errors['name']);
}; // check if errors exist
if(!empty($errors['age'])) {
phpAlert($errors['age']);
};
}
function errCheck() { // validate user input
if(empty($_POST['name'])) {
$errors['name'] = 'Name can\'t be emty';
}
elseif(!preg_match('/^[a-zA-Z\s]+$/', $_POST['name'])){
$errors['name'] = 'Only letters available for name.';
};
if(empty($_POST['age'])) {
$errors['age'] = 'Age can\'t be empty';
}
}
function phpAlert($msg){ // in case errors exist
echo $msg;
echo '<script type="text/javascript">alert("' . $msg . '")</script>';
};
?>
<!DOCTYPE html>
<html>
<head>
<title> my PHP </title>
</head>
<body>
<h4 class="center">Add a Person</h4>
<form class="white" action="15.php" method="POST"> <!-- GET request form -->
<label>Name: </label>
<input type="text" name="name"> <!-- name is the key for http request -->
<label>Age: </label>
<input type="number" name="age">
<div class="center">
<input type="submit" name="submit" value="submit">
</div>
</form>
</body>
</html>
尝试使用此代码,您需要将$\u POST作为函数中的参数传递errCheck,并返回错误数组。
$errors = array('name' => '', 'age' => '' ); // array containing errors
// check get request. The GET will be an array storing data to be transfered to server as GET.
// _ is global var. GET belows will take the value when the submit button pressed
if(isset($_POST['submit'])){ // when user submit POST request
$errors= errCheck($_POST);
if(!empty($errors['name'])) {phpAlert($errors['name']);}; // check if errors exist
if(!empty($errors['age'])) {phpAlert($errors['age']);};
}
function errCheck($array) { // validate user input. Throw errors into errors array
$errors=array();
if(empty($array['name'])) {$errors['name'] = 'Name can\'t be emty';}
elseif(!preg_match('/^[a-zA-Z\s]+$/', $array['name'])){ $errors['name'] = 'Only letters available for name.';};
if(empty($array['age'])) {$errors['age'] = 'Age can\'t be empty';}
return $errors;
}
function phpAlert($msg){ // in case errors exist
echo $msg;
echo '<script type="text/javascript">alert("' . $msg . '")</script>';
};
?>
$errors=array('name'=>'','age'=>'');//包含错误的数组
//检查get请求。GET将是一个数组,它存储要作为GET传输到服务器的数据。
//_u是全局变量。按下提交按钮时,GET belows将获取该值
如果(isset($_POST['submit']){//when user submit POST request
$errors=errCheck($\u POST);
if(!empty($errors['name']){phpAlert($errors['name']);};//检查是否存在错误
如果(!empty($errors['age']){phpAlert($errors['age']);};
}
函数errCheck($array){//验证用户输入。将错误抛出到错误数组中
$errors=array();
if(空($array['name']){$errors['name']='name不能是emty';}
elseif(!preg_match('/^[a-zA-Z\s]+$/',$array['name']){$errors['name']='仅可用于name的字母';};
if(empty($array['age']){$errors['age']='age不能为空';}
返回$errors;
}
函数phpAlert($msg){//以防出现错误
echo$msg;
回显“警报”(“.$msg.”);
};
?>
尝试使用此代码,您需要将$\u POST作为函数中的参数传递errCheck并返回errors数组。
$errors = array('name' => '', 'age' => '' ); // array containing errors
// check get request. The GET will be an array storing data to be transfered to server as GET.
// _ is global var. GET belows will take the value when the submit button pressed
if(isset($_POST['submit'])){ // when user submit POST request
$errors= errCheck($_POST);
if(!empty($errors['name'])) {phpAlert($errors['name']);}; // check if errors exist
if(!empty($errors['age'])) {phpAlert($errors['age']);};
}
function errCheck($array) { // validate user input. Throw errors into errors array
$errors=array();
if(empty($array['name'])) {$errors['name'] = 'Name can\'t be emty';}
elseif(!preg_match('/^[a-zA-Z\s]+$/', $array['name'])){ $errors['name'] = 'Only letters available for name.';};
if(empty($array['age'])) {$errors['age'] = 'Age can\'t be empty';}
return $errors;
}
function phpAlert($msg){ // in case errors exist
echo $msg;
echo '<script type="text/javascript">alert("' . $msg . '")</script>';
};
?>
$errors=array('name'=>'','age'=>'');//包含错误的数组
//检查get请求。GET将是一个数组,它存储要作为GET传输到服务器的数据。
//_u是全局变量。按下提交按钮时,GET belows将获取该值
如果(isset($_POST['submit']){//when user submit POST request
$errors=errCheck($\u POST);
if(!empty($errors['name']){phpAlert($errors['name']);};//检查是否存在错误
如果(!empty($errors['age']){phpAlert($errors['age']);};
}
函数errCheck($array){//验证用户输入。将错误抛出到错误数组中
$errors=array();
if(空($array['name']){$errors['name']='name不能是emty';}
elseif(!preg_match('/^[a-zA-Z\s]+$/',$array['name']){$errors['name']='仅可用于name的字母';};
if(empty($array['age']){$errors['age']='age不能为空';}
返回$errors;
}
函数phpAlert($msg){//以防出现错误
echo$msg;
回显“警报”(“.$msg.”);
};
?>
在函数errCheck中定义错误并返回
// check get request. The GET will be an array storing data to be transfered to server as GET.
// _ is global var. GET belows will take the value when the submit button pressed
if(isset($_POST['submit'])){ // when user submit POST request
$errors = errCheck();
if(!empty($errors['name'])) {phpAlert($errors['name']);}; // check if errors exist
if(!empty($errors['age'])) {phpAlert($errors['age']);};
}
function errCheck() { // validate user input. Throw errors into errors array
//Define the array of error within this function
$errors = array('name' => '', 'age' => '' ); // array containing errors
if(empty($_POST['name'])) {$errors['name'] = 'Name can\'t be emty';}
elseif(!preg_match('/^[a-zA-Z\s]+$/', $_POST['name'])){ $errors['name'] = 'Only letters available for name.';};
if(empty($_POST['age'])) {$errors['age'] = 'Age can\'t be empty';}
//Return the errors
return $errors;
}
function phpAlert($msg){ // in case errors exist
echo $msg;
echo '<script type="text/javascript">alert("' . $msg . '")</script>';
};
//检查get请求。GET将是一个数组,它存储要作为GET传输到服务器的数据。
//_u是全局变量。按下提交按钮时,GET belows将获取该值
如果(isset($_POST['submit']){//when user submit POST request
$errors=errCheck();
if(!empty($errors['name']){phpAlert($errors['name']);};//检查是否存在错误
如果(!empty($errors['age']){phpAlert($errors['age']);};
}
函数errCheck(){//验证用户输入。将错误抛出到错误数组中
//在此函数中定义错误数组
$errors=array('name'=>'','age'=>'');//包含错误的数组
如果(空($_POST['name']){$errors['name']='name不能是emty';}
elseif(!preg_match('/^[a-zA-Z\s]+$/',$\u POST['name']){$errors['name']='仅可用于name的字母。;};
如果(空($_POST['age']){$errors['age']='age不能为空';}
//返回错误
返回$errors;
}
函数phpAlert($msg){//以防出现错误
echo$msg;
回显“警报”(“.$msg.”);
};
在函数errCheck中定义错误并返回
// check get request. The GET will be an array storing data to be transfered to server as GET.
// _ is global var. GET belows will take the value when the submit button pressed
if(isset($_POST['submit'])){ // when user submit POST request
$errors = errCheck();
if(!empty($errors['name'])) {phpAlert($errors['name']);}; // check if errors exist
if(!empty($errors['age'])) {phpAlert($errors['age']);};
}
function errCheck() { // validate user input. Throw errors into errors array
//Define the array of error within this function
$errors = array('name' => '', 'age' => '' ); // array containing errors
if(empty($_POST['name'])) {$errors['name'] = 'Name can\'t be emty';}
elseif(!preg_match('/^[a-zA-Z\s]+$/', $_POST['name'])){ $errors['name'] = 'Only letters available for name.';};
if(empty($_POST['age'])) {$errors['age'] = 'Age can\'t be empty';}
//Return the errors
return $errors;
}
function phpAlert($msg){ // in case errors exist
echo $msg;
echo '<script type="text/javascript">alert("' . $msg . '")</script>';
};
//检查get请求。GET将是一个数组,它存储要作为GET传输到服务器的数据。
//_u是全局变量。按下提交按钮时,GET belows将获取该值
如果(isset($_POST['submit']){//when user submit POST request
$errors=errCheck();
if(!empty($errors['name']){phpAlert($errors['name']);};//检查是否存在错误
如果(!empty($errors['age']){phpAlert($errors['age']);};
}
函数errCheck(){//验证用户输入。将错误抛出到错误数组中
//在此函数中定义错误数组
$errors=array('name'=>'','age'=>'');//包含错误的数组
如果(空($_POST['name']){$errors['name']='name不能是emty';}
elseif(!preg_match('/^[a-zA-Z\s]+$/',$\u POST['name']){$errors['name']='仅可用于name的字母。;};
如果(空($_POST['age']){$errors['age']='age不能为空';}
//返回错误
返回$errors;
}
函数phpAlert($msg){//以防出现错误
echo$msg;
回显“警报”(“.$msg.”);
};