用户'name'@'localhost'的访问被拒绝（使用密码：NO）

Question

I am trying to create a cron job in which it will send a mail when my inventory stocks are low. The email is just sending me the error code above, even though my database settings are accurate. So here is my code:

<?php

//I just renamed them, but you get the concept
$db_host = "mydbhost";
$db_username = "myusername";
$db_password = "mypassword";
$db_name = "mydatabase";

$conn = mysqli_connect($db_host,$db_username,$db_password,$db_name) or die ('MySQL Not found // Could Not Connect.');

$recipient = "email@email.com";

$result = mysql_query("SELECT prod_count, restock_level FROM mydatabase WHERE prod_count <= restock_level;");
if ($result) {
  $row = mysql_fetch_assoc($result);
  $count = $row['prod_count'];
  $restocklvl = $row['restock_level'];
  if ($count <= $restocklvl) {
    $msg = "Your inventory is currently low. Please restock.";
    mail($recipient, "Inventory check below threshold", $msg);
  }
}
else {
  $msg = "An error occurred while checking inventory: " . mysql_error();
  mail($recipient, "Inventory check error", $msg);
}
?>

What seems to go wrong? Thanks! Here is the image of the email

Answer 1

You are currently mixing up the mysqli and mysql querys. When connecting via mysqli you cannot user functions like mysql_query.

Code should be something along the lines of as a quick example:

$conn = mysqli_connect($db_host,$db_username,$db_password,$db_name)
$result = $conn->query($sql);
$row = $result->fetch_assoc();

You'll have to change any mysql_ methods to the new mysqli in order for it to work correctly.

Answer 2

 <?php //I just renamed them, but you get the concept $db_host = "mydbhost"; $db_username = "myusername"; $db_password = "mypassword"; $db_name = "mydatabase"; $conn = mysqli_connect($db_host,$db_username,$db_password,$db_name) or die ('MySQL Not found // Could Not Connect.'); $recipient = "email@email.com"; $result = mysqli_query($conn,"SELECT prod_count, restock_level FROM mydatabase WHERE prod_count <= restock_level;"); if ($result) { $row = mysqli_fetch_assoc($result); $count = $row['prod_count']; $restocklvl = $row['restock_level']; if ($count <= $restocklvl) { $msg = "Your inventory is currently low. Please restock."; mail($recipient, "Inventory check below threshold", $msg); } } else { $msg = "An error occurred while checking inventory: " . mysqli_error($conn); mail($recipient, "Inventory check error", $msg); } ?> 

try this code.You mix mysql or mysqli code.