Codeigniter中错误消息后有空格

Question

我输出错误消息，代码为：

<script>
const successNotification = window.createNotification({
theme: 'error',
showDuration: 5000,
closeOnClick: true
});    
successNotification({title: 'ERROR',message:'Category name is required
'});            
</script>

类别名称是必需的之后，它是一个空格，我想是这样的：

<script>
const successNotification = window.createNotification({
theme: 'error',
showDuration: 5000,
closeOnClick: true
});    
successNotification({title: 'ERROR',message:'Category name is required'});               
</script>

这是我的php代码：

$this->form_validation->set_rules('name', $this->lang->line('category'), 'trim|required|xss_clean',
array('required' => $this->lang->line('category_required')));
$this->form_validation->set_error_delimiters('',''); 
if ($this->form_validation->run() === false) {
$this->session->set_flashdata('submit-error', validation_errors());
redirect($this->agent->referrer());
}

在我看来，我有这个：

<script>
const successNotification = window.createNotification({
theme: 'error',
showDuration: 5000,
closeOnClick: true
});    
successNotification({title: 'ERROR',message:'<?php echo $this->session->flashdata('submit-error'); ?>'});            
</script>

如何删除输出中错误消息后的空格？

谢谢！

Answer 1

经过一番研究，我解决了这个问题。我会放在这里可能会帮助

$this->session->set_flashdata('submit-error', trim(preg_replace('/ss+/', '', validation_errors())));