Prestashop前端复选框不发送POST值

Question

I use this html code in a page .tpl

<input name="prova" type="checkbox" id="prova" value="1" checked="checked"> 

and in php page use

'prova' => Tools::getValue('prova')

to get a checkbox value,

but when I try to print it is empty

Answer 1

If you submit the form without checking checkbox, then browser will not send checkbox value. To check whether the checkbox is submitted or not, use the below code:

'prova' => Tools::getValue('prova', false);  

If the checkbox is not submitted then it will return false otherwise return either the "on" or "1" value for that checkbox.