What is the significance of the error message "Warning: mysqli_real_escape_string() expects parameter 1 to be mysqli, null given" in PHP code?

The error message "Warning: mysqli_real_escape_string() expects parameter 1 to be mysqli, null given" indicates that the mysqli connection object is not being passed correctly to the mysqli_real_escape_string() function. To solve this issue, you need to ensure that a valid mysqli connection object is passed as the first parameter to mysqli_real_escape_string(). 

// Assuming $conn is your mysqli connection object
if ($conn) {
    $escaped_string = mysqli_real_escape_string($conn, $unescaped_string);
    // Use $escaped_string in your query
} else {
    // Handle the case when $conn is null or not a valid mysqli connection
}

Keywords

mysqli_real_escape_string parameter mysqli null error message

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