內容簡介
這是一個針對Contact Form 7的外掛，可以增加一個唯一的提交ID欄位。
你可以選擇在表單中加入隱藏或可見的欄位。
這個欄位將會自動填入一個數字，每次提交時該數字都會增加。
使用方法
只需要將欄位加入到表單中即可。
你可以使用cf7_submission_id_filter篩選值。
例如要加入前導零，只需要將以下代碼加入到functions.php中
add_filter('cf7_submission_id_filter', 'custom_cf7_submission_id_filter');
function custom_cf7_submission_id_filter($val){
return sprintf("%04d", $val);
}
外掛標籤
開發者團隊
原文外掛簡介
Plugin for Contact Form 7: adds a field for an unique submission id.
You can choose to include a hidden or an visible field to your form.
This field will be automatically filled with an number which is incremented on every submission.
Usage
Just add the field to your form.
You can filter the value using the cf7_submission_id_filter.
To add leading zeros for example, just put the code below in your functions.php
add_filter('cf7_submission_id_filter', 'custom_cf7_submission_id_filter');
function custom_cf7_submission_id_filter($val){
return sprintf("%04d", $val);
}