What is the significance of the SQL error message "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'key = 0' at line 1" in PHP?

The error message "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'key = 0' at line 1" indicates that there is a syntax error in the SQL query. In this case, "key" is a reserved keyword in SQL and should be enclosed in backticks (`) to avoid conflicts. To resolve this issue, simply enclose the keyword "key" in backticks in the SQL query. 

<?php
// Assuming $conn is the database connection
$key = 0;
$sql = "SELECT * FROM table_name WHERE `key` = $key";
$result = mysqli_query($conn, $sql);

if ($result) {
    // Process the result
} else {
    echo "Error: " . mysqli_error($conn);
}

mysqli_close($conn);
?>

Keywords

SQL error message syntax error MySQL server PHP key.

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