Why is understanding the functionality of LIMIT crucial in avoiding incorrect data retrieval in PHP?

Understanding the functionality of LIMIT in PHP is crucial to avoid incorrect data retrieval because it determines the number of records to return from a database query. If not used correctly, it can lead to retrieving too many or too few records, resulting in inaccurate data being displayed or processed. 

// Example of using LIMIT in a SQL query to retrieve only 10 records
$query = "SELECT * FROM table_name LIMIT 10";
$result = mysqli_query($connection, $query);

if(mysqli_num_rows($result) > 0){
    while($row = mysqli_fetch_assoc($result)){
        // Process the retrieved data
    }
} else {
    echo "No records found";
}

Keywords

LIMIT data retrieval functionality PHP incorrect

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