Why does `mysqli_query()` throw 'Warning: mysqli_query() expects parameter 1 to be mysqli' error?

Understanding the "Warning: mysqli_query() expects parameter 1 to be mysqli" Error

When attempting to execute a query with mysqli_query() in PHP, you may encounter an error stating that parameter 1 expects a mysqli object, yet a resource is provided. This discrepancy arises when you mix the mysqli and mysql extensions in your code.

Solution: Use mysqli Exclusively

To resolve the issue, ensure that you use the mysqli extension throughout your code. Specifically, replace the following lines in your provided code:

$myConnection= mysql_connect("$db_host","$db_username","$db_pass") or die ("could not connect to mysql");
mysql_select_db("mrmagicadam") or die ("no database");   

with:

$myConnection= mysqli_connect("$db_host","$db_username","$db_pass") or die ("could not connect to mysql");
mysqli_select_db($myConnection, "mrmagicadam") or die ("no database");   

mysqli offers several advantages over the old mysql extension, including improved performance and security. It is highly recommended to switch to mysqli for your PHP database interactions.

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