PHP Common hash encryption function _php technique

This article describes the PHP common hash encryption function. Share to everyone for your reference. The specific analysis is as follows:

Copy Code code as follows:

$hash _list=hash_algos (); Returns a list of registered hash rules

Print_r ($hash _list); Show results

Create a file to compute the hash value: file_put_contents (' example.txt ', ' The quick brown fox jumped over the lazy dog. ');

Output hash Value information:

Copy Code code as follows:

echo hash_file (' MD5 ', ' example.txt ');

$str = "The quick brown fox jumped over the lazy dog." Define String
echo Hash (' ripemd160 ', $str); Generate hash value

$ctx =hash_init (' MD5 '); Initializes a hash value
Hash_update ($ctx, ' The quick brown fox '); Pouring data into a hash value
Hash_update ($ctx, ' jumped over the lazy dog. '); Pouring data into a hash value
echo hash_final ($CTX); Output the final result

$str = "The quick brown fox jumped over the lazy dog." Define String
$FP =tmpfile (); Create a temporary file
Fwrite ($fp, $STR); Writes a string to a temporary file
Rewind ($FP); Rewind the location of the file pointer
$ctx =hash_init (' MD5 '); Initializes a hash value
Hash_update_stream ($ctx, $fp); Pouring data into the data stream
echo hash_final ($CTX); Output results


$str = "The quick brown fox jumped over the lazy dog." Define String
echo Hash_hmac (' ripemd160 ', $str, ' secret '); Generate a hash value that contains a key

/* Creates a file and writes the string to it * *
$file = "Example.txt"; Define file name
$str = "The quick brown fox jumped over the lazy dog." Define String
File_put_contents ($file, $STR); Writing a string to a file
echo hash_hmac_file (' MD5 ', $file, ' secret '); Generate a hash value that contains the key

$ctx =hash_init (' SHA1 '); Define String
Hash_update ($ctx, ' The quick brown fox jumped over the lazy dog. '); Pouring data into a hash value
echo hash_final ($CTX); Output results

I hope this article will help you with your PHP program design.