警告：mysqli_query（）期望参数1是mysqli，在

Question

中给出的整数有许多帖子涉及到同一个问题，但问题仍然存在，对不起，请帮我解决这个问题。

<?php 

$dbhost="localhost"; 
$dbuser="root"; 
$dbpass=""; 
$dbase="cms"; 

$connection=mysqli_connect("$dbhost","$dbuser","$dbpass","$dbase"); 
if($connection=mysqli_connect_errno()){ 
    echo "Error estabilishing conection : ".mysqli_connect_error(). "(" .mysqli_connect_errno().")"; 
} 

?> 


<?php 

$query = "SELECT * FROM pages"; 
$result = mysqli_query($connection, $query); 
if(!$result){ 
    die("Database query failed.."); 
} 

?> 

Answer 1

线

if($connection=mysqli_connect_errno()){ 

分配mysqli_connect_errno()到$connection变量。

此行应改为：

if (!$connection) { 

和全连接的代码是：

$connection=mysqli_connect("$dbhost","$dbuser","$dbpass","$dbase"); 
if(!$connection){ 
    echo "Error estabilishing conection : ".mysqli_connect_error(). "(" .mysqli_connect_errno().")"; 
}