Example of $_POST passing value in php

This article introduces three small examples of using $_POST to transfer values ​​​​in PHP. Friends in need can refer to it.

Example of $_POST value transfer in php, please refer to it.

Example 1, use $_POST to pass value

<?php
$_POST['name'] = trim($_POST['name']);

if (strlen($_POST['name']) == 0) {
    $errors[] = "姓名必填！";
}

Example 2, verification required items

<?php 
if (strlen($_POST['email']) == 0) {
   $errors[] = "请输入Email地址";
}

Example 3, required fields for detection

<?php
if (! strlen($_POST['flavor'])) {
   print '请输入您喜欢的冰淇淋口味';
}
?>