PHP | hash_equals() Function Last Updated : 04 Mar, 2021 Comments Improve Suggest changes Like Article Like Report The hash_equals function() is an inbuilt function in PHP which is used to compares two strings using the same time whether they are equal or not.Syntax: hash_equals( $known_str, $usr_str ) Parameters: This function accept two parameters as mention above and describe below. $known_str: This parameter is used to specify the known length string.$usr_str: This parameter is used to specify the user-supplied string. Return Value: This function returns True if both strings are equal, False otherwise.Below programs illustrate the hash_equals() function in PHP:Program 1: php <?php // PHP program to illustrate // hash_equals function $known_str = crypt('GFG', 'Hello-GFG'); $usr_str = crypt('GFG', 'Hello-GFG'); // Compare both strings $res = hash_equals($known_str, $usr_str); // Display result var_dump($res); ?> Output: bool(true) Program 2: php <?php // PHP program to illustrate // hash_equals function $known_str = crypt('GFG', 'Hello-GFG'); $usr_str = crypt('GeeksforGeeks', 'Hello-GFG'); // Compare both strings $res = hash_equals($known_str, $usr_str); // Display result var_dump($res); ?> Output: bool(false) Reference: http://php.net/manual/en/function.hash-equals.php Comment More infoAdvertise with us Next Article PHP | hash_equals() Function R R_Raj Follow Improve Article Tags : Web Technologies PHP Hash PHP-function Practice Tags : Hash Similar Reads PHP | hash_algos() Function The hash_algos() function is an inbuilt function in PHP which is used to return a list of registered hashing algorithms. Syntax: array hash_algos( void ) Parameter: This function does not accepts any parameter. Return Value: This function returns a numerically indexed array which contains the list o 2 min read PHP | hash_final() Function The hash_final() function is an inbuilt function in PHP which is used to finalize an incremental hash and return the resulting digest. Syntax: hash_final( $context, $raw_output ) Parameters: This function accept two parameters as mention above and describe below. $context: This parameter is used to 1 min read PHP | hash_file( ) Function The hash_file() function is an inbuilt function in PHP which is used to generate a hash value using the contents of a given file. Syntax: string hash_file( $algo, $file, $raw_opt ) Parameters: This function accept three parameters as mention above and describe below. $algo: It is the required parame 2 min read PHP | hash_hmac_algos() Function The hash_hmac_algos() function is an inbuilt function in PHP that is used to get the list of registered hashing algorithms suitable for the hash_hmac() function. Syntax: array hash_hmac_algos( void ) Parameters: This function does not accept any parameter. Return Value: This function returns an ar 2 min read PHP | hash_copy() Function The hash_copy() function is an inbuilt function in PHP which is used to get the copy of hashing context. Syntax: hash_copy( $context ) Parameters: This function accepts single parameter $context which is used to specify the hashing context returned by hash_init() function. Return Value: This functio 1 min read Like