How can the use of the sha1 function in PHP impact database entries, especially when handling empty values?

Using the sha1 function in PHP to hash database entries can impact the handling of empty values because the function will still generate a hash for an empty string. To solve this issue, we can check if the input value is empty before hashing it with sha1. 

$input = ""; // Empty value

if (!empty($input)) {
    $hashedValue = sha1($input);
} else {
    $hashedValue = null; // Set hashed value to null for empty input
}

// Save $hashedValue to the database

Keywords

sha1 function PHP database entries empty values impact

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