php修改多个字段

1.直接修改

2.按条件修改

1.代码：

<?php
    header("Content-Type:text/html;charset=utf8"); 
	header("Access-Control-Allow-Origin: *"); //解决跨域
	header('Access-Control-Allow-Methods:GET');// 响应类型  
	header('Access-Control-Allow-Headers:*'); // 响应头设置 
	$appid = "wx9025b8efd9a176--";
	$secret = "3c242548fb56cfce986b2abe--";
	
	$servername = "localhost";
	$username = "root";
	$password = "root";
	$dbname = "demo";
	 
	// 创建连接
	$conn = new mysqli($servername, $username, $password, $dbname);
	// Check connection
	if ($conn->connect_error) {
	    die("连接失败: " . $conn->connect_error);
	} 
	 
				$access_token ='access_token';
				$jsapi_ticket = 'ticket';
				$_time = time();
				
				$m_sql ="UPDATE js_sdk SET _time = $_time, jsapi_ticket = '$jsapi_ticket', access_token_ = '$access_token'";
				mysqli_query($conn,$m_sql);

				mysqli_close($conn);

?>

2.代码：

mysqli_query($con,"UPDATE Persons SET Age=36
WHERE FirstName='Peter' AND LastName='Griffin'");