Question

php 中$result为什么会有属性num

Answer 1

$result是一个变量 属性num是在类中定义的

Answer 2

<?php
if (isset($_POST['name']) && (isset($_POST['password']))) {
$db = new mysqli('localhost', 'root', 'chenzeshu8', 'workbase');
if ($db->connect_errno) {
echo "链接失败";
} else {
echo "连接成功";
$name = $_POST['name'];
$password = $_POST['password'];
$query = "SELECT id,name from worklist WHERE name='" . $name . "',AND password ='" . $password . "'";
$result = $db->query($query);
if ($result) {
if ($result->num_rows) {
echo "成功";
} else {
echo "失败";
}
} else {
var_dump($db->error_list); // Returns a list of errors from the last command executed
}
$db->close();
}
}
-你看过后很简单吧以后不会可以向我一样经常到后盾人平台找找相关教材看看就会了，希望能帮到你，给个采纳吧谢谢ʕ๑•㉨•๑ʔ❀