一個PHP錯誤遇到

Question

// Severity: Notice Message: Use of undefined constant errors - assumed 'errors'   Filename: views/register_user.php Line Number: 8 

//I get an error(above) after I register but the good news is it displays validation errors(). 

//users.php 
$this->load->library('form_validation'); 
    $this->form_validation->set_rules($config);  
    if($this->form_validation->run() == FALSE){ 
     $data['errors']=validation_errors(); 
    } 
//register_user.php 
<?php if($errors = validation_errors()){ 
echo $errors; ?> 
<div style="background:red;color:white;"> 
<?=errors?> 
</div> 
<? } ?> 

Answer 1

修改代碼，以下

<?php 
$errors = validation_errors(); 
if($errors){ 
?> 
<div style="background:red;color:white;"> 
<?=$errors?> 
</div> 
<? } ?> 

Answer 2

你犯了一個語法錯誤..變量中的錯誤之前錯過$ ..

試試這個

$this->load->library('form_validation'); 
    $this->form_validation->set_rules($config);  
    if($this->form_validation->run() == FALSE){ 
     $data['errors']=validation_errors(); 
    } 
//register_user.php 
<?php if($errors == validation_errors()){ 
echo $errors; ?> 
<div style="background:red;color:white;"> 
<?=$errors?> 
</div> 
<? } ?> 

Answer 3

<?=errors?>不正確。

嘗試把$符號在前面，讓PHP知道它是一個變量，而不是一個常數：

<?=$errors?>