CodeIgniter表单验证greater_than_equal_to无法正常工作

Question

我有这段代码

$this->form_validation->set_rules('MinimumSalary', 'Minimum Salary', 'trim|required|min_length[1]|max_length[20]|numeric|greater_than_equal_to[0]');
$this->form_validation->set_rules('MaximumSalary', 'Maximum Salary', 'trim|required|min_length[1]|max_length[20]|numeric|greater_than_equal_to[MinimumSalary]');

然而当我输入MinimumSalary = 100和MaximumSalary = 200，The Maximum Salary field must contain a number greater than or equal to Minimum Salary

时，它总是会引发错误

Answer 1

试一下

'trim|required|min_length[1]|max_length[20]|numeric|greater_than_equal_to['.$this->input->post('MinimumSalary').']');